Geography A-Level

Geography A-Level glossary

806 key terms for Geography A-Level, A to Z, each linked to the topic pages that use it.

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A

Ablation: The loss of mass from a glacier, occurring via melting, sublimation, evaporation and calving.AQA, Pearson Edexcel
Abrasion: The sandblasting effect of wind-blown particles against rock surfaces, typically concentrated within a metre of the ground.AQA, Pearson Edexcel
Accumulation: The addition of mass to a glacier, primarily through precipitation such as snow, wind deposition and avalanches.AQA, Pearson Edexcel
Accumulation and Ablation Dynamics: The spatial and temporal distribution of mass gain via snowfall, rime, and avalanching versus mass loss through melting, sublimation, and calving.Pearson Edexcel
Acid rain: Formed from sulphur dioxide and nitrogen oxides emitted during energy generation, it damages aquatic ecosystems and forests and has transboundary impacts.AQA
Active layer: The layer above the permafrost which thaws during the brief summer and freezes in winter.AQA
Adaptation: A characteristic human response, alongside adjustment, prediction and fatalism, related to hazard incidence, intensity, magnitude, distribution and level of…AQA
Aeolian processes: Wind erosion creates deflation hollows by removing loose sand and abrasion shapes ventifacts, yardangs and zeugen, while wind deposition forms barchans and…AQA
Agricultural sustainability: The extent to which management strategies for soil problems can be continued without damaging the soil, judged on sustainability and cost-effectiveness.AQA
Albedo Feedback: A positive feedback loop where melting ice reduces the Earth's reflectivity, leading to increased absorption of solar radiation and further warming.Pearson Edexcel
Alpine: A cold environment determined by high altitude regardless of latitude.AQA
Annotation: Adding explanatory notes to diagrams, graphs, field sketches and photographs to highlight key processes or features, going beyond simple labelling.AQA
Antarctic Convergence: A continuous marine boundary where cold northward-flowing Antarctic waters meet warmer subantarctic waters, creating a highly productive marine ecosystem.AQA
Antarctic Treaty (1959): Dedicated the continent to peaceful, scientific use.AQA
Anthropogenic: Environmental change caused or influenced by human activity, specifically regarding greenhouse gas emissions and land-use modification.Pearson Edexcel
Anthropogenic Encroachment: The degradation of fragile ecosystems through tourism-induced erosion, infrastructure development in periglacial zones, and the exploitation of mineral and…Pearson Edexcel
Anthropogenic Forcing: The acceleration of carbon transfer from the lithosphere to the atmosphere via combustion and the reduction of terrestrial sinks through land-use change.Pearson Edexcel
Anthropogenic Modification: Investigation into how urbanization, deforestation, and agricultural intensification alter infiltration rates and reduce lag times, increasing the magnitude…Pearson Edexcel
Anthropogenic Radiative Forcing: Assessment of the shift from natural variability to human-induced climate change.Pearson Edexcel
Aquifer: A body of permeable rock or sediment that stores and transmits groundwater, often subject to over-abstraction in arid regions.Pearson Edexcel
Areal Extent: The total geographical area affected by a hazard event, ranging from localized (landslides) to global (volcanic ash clouds).Pearson Edexcel
Arête: A knife-edged ridge created when two corries erode back-to-back.AQA
Aridity: A moisture deficit where potential evapotranspiration exceeds precipitation, defining deserts.AQA
Aridity Index: Precipitation divided by potential evapotranspiration, quantifying aridity, with arid zones scoring between 0.05 and 0.20.AQA
Asthenosphere: The semi-molten, plastic layer of the upper mantle upon which the rigid lithospheric plates float and move.Pearson Edexcel
Asylum seekers: Claimants awaiting legal confirmation of their refugee status.AQA
Asymmetric Warfare and State Failure: The challenges posed by non-traditional combatants and the long-term socio-economic costs of counter-insurgency, leading to the 'failed state' phenomenon and…Pearson Edexcel
Atmosphere: The smallest store, holding just 0.001% as water vapour, yet crucial for the rapid global distribution of water.AQA
Atmospheric circulation: Global circulation creates high-pressure zones around 30° N/S, where sinking air warms adiabatically and prevents cloud formation.AQA
Atmospheric pollution: Pollution driven by vehicular emissions and industrial activity, causing respiratory diseases and smog.AQA

B

Basal sliding: Meltwater lubricates the bed, allowing the ice to move.AQA
Base Isolation: An engineering technique that uncouples a structure from its foundation using springs or bearings to minimize the transmission of seismic energy.Pearson Edexcel
Benioff Zone: An inclined zone of earthquake activity that traces the path of a subducting tectonic plate into the mantle.Pearson Edexcel
Bergschrund: A deep crevasse at the back of a glacier where the moving ice pulls away from the stagnant ice or rock wall, facilitating headwall erosion.Pearson Edexcel
Big data: Extremely large datasets analysed computationally to reveal patterns and associations.AQA
Bilateral Aid: Financial or material assistance given directly from one government to another.Pearson Edexcel
Biodiversity: The immense variety of marine life supported by coral reef ecosystems, which are highly biodiverse.AQA
Biomass: One of the three main stores in Gersmehl's model, consisting of living vegetation and animals.AQA
Block disintegration: Affects well-jointed rocks like limestone, where thermal stress detaches large angular blocks along joints.AQA
Boserupian views: Perspectives suggesting human innovation will overcome environmental limits, allowing sustainable coexistence.AQA
Brain drain: A demographic impact suffered by origin countries.AQA
Brownfield Site: Land that has been previously built on and is now derelict or unused, often associated with former industrial areas.Pearson Edexcel

C

Carbon budget: The balance between carbon emissions and removals across all global reservoirs, or the difference between the inputs and outputs of carbon within a specific…AQA
Carbon Colonialism: The outsourcing of high-emission industrial processes from superpowers to developing nations, which complicates global emissions accounting and shifts the…Pearson Edexcel
Carbon Intensity: The amount of carbon by weight emitted per unit of energy consumed or per unit of GDP, used to measure the 'cleanliness' of economic activity.Pearson Edexcel
Carbon reservoirs: Major stores of carbon of varying sizes and distributions, including the lithosphere, hydrosphere, cryosphere, biosphere and atmosphere.AQA
Carbon Sequestration: The process of capturing and storing atmospheric carbon dioxide in long-term reservoirs such as deep oceans, soils, or biomass.Pearson Edexcel
Carbon Sequestration and Storage: Mechanisms of long-term carbon removal from the atmosphere into geological or biological sinks.Pearson Edexcel
Carrying capacity: The limit of Earth's resources that neo-Malthusian perspectives argue unchecked growth will exceed, leading to resource depletion and environmental degradation.AQA
Case Study Application: Analysing a recent seismic event, typically one occurring within the last thirty years, to demonstrate specific impacts and human responses.AQA
Catchment: Collecting precipitation directly, often through rooftop harvesting or land contouring, before it becomes surface runoff.AQA
Central tendency: A descriptive statistic that describes a typical value, chosen to suit the distribution and data scale.AQA
Centrifugal vs. Centripetal Forces: The geographical tension between forces that unify a state (centripetal) and those that threaten to pull it apart (centrifugal), such as religious diversity…Pearson Edexcel
Centripetal and Centrifugal Forces: The geographical factors that either unify a state (shared language, infrastructure) or threaten to fragment it (ethnic diversity, economic disparity).Pearson Edexcel
Chemical Weathering and Carbonation: The mechanism by which atmospheric CO2 reacts with rainwater to form carbonic acid, facilitating the breakdown of silicate rocks and the transport of…Pearson Edexcel
Chi-square test: Compares observed and expected frequencies for categorical data, either for association in a contingency table or for a stated expected distribution, using…AQA
Choropleth maps: Maps that use colour shading or patterns to represent average values within predefined administrative boundaries, such as population density per km².AQA
Circular Economy: An economic system aimed at eliminating waste and the continual use of resources.Pearson Edexcel
Clausius-Clapeyron Relationship: The physical law stating that the water-holding capacity of the atmosphere increases by approximately 7% for every 1°C rise in temperature.Pearson Edexcel
Climate change: Drives rapid warming, particularly on the western Peninsula, causing ice shelf disintegration, altering penguin habitats, and increasing ocean acidification.AQA
Climate Change and Cryospheric Flux: The impact of rising global temperatures on glacial mass balance, leading to accelerated ablation, the expansion of proglacial lakes, and the destabilization…Pearson Edexcel
Climate change impacts: Rising global temperatures cause a strongly negative mass balance, losing volume annually and leading to rapid snout retreat.AQA
Climatic climax: The final, stable community in equilibrium with the prevailing regional climate, determined by that climate.AQA
Closed System: A system where energy transfers across boundaries, but matter does not (e.g., the global hydrological cycle).Pearson Edexcel
Coastal deposition: The settling out of material to form features such as mudflats, significantly enhanced by flocculation in brackish water.AQA
Coastal flooding: An impact on coasts that increases in frequency and magnitude, exacerbated by more intense storm surges.AQA
Coastal Landscape Development: Study of the interaction between marine processes and sub-aerial weathering in shaping landforms of erosion and deposition.Pearson Edexcel
Coastal Management and Human Interference: Evaluation of the conflict between natural erosional cycles and human requirements, focusing on the efficacy and sustainability of hard engineering versus…Pearson Edexcel
Coastal Risk and Resilience: Evaluation of human vulnerability to coastal hazards, including storm surges and sea-level rise, and the efficacy of hard versus soft engineering…Pearson Edexcel
Coastal Systems and Flux: Analysis of the coast as an open system involving inputs (sediment, kinetic energy), transfers (longshore drift, offshore currents), and outputs (accumulative…Pearson Edexcel
Coastlines of emergence: Form when relative sea level falls, typically due to isostatic rebound following deglaciation outpacing eustatic sea-level rise, exposing former coastal…AQA
Coastlines of submergence: Occur when relative sea level rises, flooding existing topography.AQA
Cold-based glaciers: These develop in high-latitude polar regions like Antarctica, with basal temperature well below the pressure melting point, so they are frozen to the bedrock…AQA
Commuter settlement: A rural or suburban area where the majority of the population travels to a nearby urban center for employment, affecting local services.Pearson Edexcel
Comparative advantage: The ability of an individual or group to carry out a particular economic activity more efficiently than another activity.Eduqas
Comparative bar graph: Bars placed side-by-side to compare categories across groups, such as populations across different cities.AQA
Comparative line graphs: Display multiple variables on the same axes, allowing direct comparison, like birth and death rates in the Demographic Transition Model.AQA
Competing national interests: The contest between countries over energy supplies as they strive for energy security, often leading to geopolitical tensions.AQA
Components of demand: Primarily agricultural through irrigation, industrial through manufacturing and cooling, and domestic through household use.AQA
Compound bar graph: A single bar divided into segments representing sub-categories, illustrating both the total and its composition.AQA
Compound line graphs: Stack variables to show both the total and the proportional breakdown of components, such as total energy generation divided into coal, gas, and renewables.AQA
Concordant Coast: A coastline where the geological strata run parallel to the shoreline, often resulting in uniform landforms like coves.Pearson Edexcel
Congestion charges: A transport strategy implemented to deter unnecessary journeys.AQA
Congestion charging: A traffic management measure used to reduce vehicular emissions, though traffic may be displaced to areas just outside the zone.AQA
Conservation: Reducing demand through efficient irrigation or domestic metering, such as smart metering or drip irrigation.AQA
Conservation strategies: Measures that aim to protect and enhance ecosystems while balancing human needs, and whose implementation can be described in a specific setting.AQA
Conservative margins: Boundaries where plates slide past each other, producing severe seismicity but no vulcanicity, as no magma is generated or released.AQA
Construction of place: Methods do not passively record data but actively create particular geographical representations, constructing a specific narrative about a place that…AQA
Constructive margins: Boundaries where plates diverge, causing vulcanicity and shallow seismicity, and forming ocean ridges and rift valleys.AQA
Constructive waves: Waves with a strong swash and weak backwash, building up beaches.AQA
Consumerist Ideology: The transition from subsistence or local-market economies to globalized commodity-driven identities, characterized by the 'throwaway culture' and rapid…Pearson Edexcel
Contemporary Coastal Vulnerability: Assessment of the impacts of accelerated sea level rise on low-lying islands and deltaic regions, focusing on the mechanisms of marine transgression and…Pearson Edexcel
Continentality: A geographical cause explaining the distribution of mid latitude deserts located deep within continental interiors.AQA
Convection currents: Currents in the asthenosphere that transfer heat, contributing to sea-floor spreading at constructive margins.AQA
Core-periphery model: A pattern in which highly developed economies dominate global trade while smaller, less developed economies often remain peripheral.AQA
Correlation: Whether the relationship shown is positive, negative, or non-existent, with strength indicated by how closely points cluster around the line of best fit.AQA
Corries: Hollows that enlarge through rotational slip and plucking as nivation hollows.AQA
Counter-urbanisation: The phase of the urban cycle in which people migrate beyond the rural-urban fringe into distinct rural settlements, seeking rural lifestyles.AQA, Pearson Edexcel
Crowd sourcing: Obtaining information by enlisting a large number of people, typically via the internet.AQA
Cryogenic Weathering and Mass Movement: Investigation into the mechanical breakdown of rock via frost shattering (felsenmeer formation) and the downslope transport of saturated regolith through…Pearson Edexcel
Cryosphere: Holds about 1.7% of global water and forms the largest freshwater store, mainly across the Antarctic and Greenland ice sheets.AQA, Pearson Edexcel
Cryospheric Feedback Mechanisms: The interaction between mass loss and surface characteristics, specifically the ice-albedo feedback.Pearson Edexcel
cryospheric processes: Glacial accumulation and ablation, operating over long timescales, which lock up freshwater globally and affect local hill slopes through seasonal melting.AQA
Cultural and Spiritual Valuation: Assessment of how glacial landscapes shape the identity, folklore, and spiritual practices of indigenous groups and their subsequent transformation into…Pearson Edexcel
Cultural controls: Beliefs such as those on contraception or women's status that heavily influence fertility.AQA
Cultural diversity: Varied traditions and innovation that enrich urban life but can also generate language barriers, pressure on local services, and social tension if integration…AQA
Cultural Homogenisation and Hybridity: The tension between the 'McDonaldisation' of global culture and the process of glocalisation, where global products are adapted to local contexts.Pearson Edexcel
Cultural Homogenisation vs. Heterogenisation: The tension between the 'McDonaldisation' of global culture and the 'glocalisation' strategies used by TNCs, alongside the rise of cultural insulation and the…Pearson Edexcel
Cultural Hybridity: The emergence of new cultural forms resulting from the blending of different cultural influences, often due to migration.Pearson Edexcel
Cultural Identity and Globalization: The tension between the preservation of local cultural heritage and the homogenizing forces of global economic integration, measured through cultural…Pearson Edexcel
Cultural Identity and Voluntary Segregation: The 'clustering' of ethnic or religious groups to maintain social networks, preserve language, and access specialized cultural or religious infrastructure,…Pearson Edexcel
Cultural Imperialism: The dominance of Western cultural products and values, primarily from the USA, which marginalizes indigenous cultures and promotes a standardized global…Pearson Edexcel

D

DALYs (Disability-Adjusted Life Years): A measure of overall disease burden, expressed as the number of years lost due to ill-health, disability, or early death.Pearson Edexcel
Data coding: Categorising data, such as interview transcripts, to identify recurring themes, which provides deep insights into place perception but is subjective as…AQA
Data overlay and analysis: Overlaying multiple thematic layers, such as flood risk zones and population density, to reveal patterns and relationships that traditional databases cannot…AQA
Data presentation: Selecting and constructing appropriate graphical presentations for field data, such as proportional symbols or choropleth maps for spatial carbon stores.AQA
Data reliability: A quality to evaluate in secondary data sourced from a chosen database, alongside validity and potential bias.AQA
Data representation and bias: How data is visualised has profound socio-political consequences, and representations must be socially responsible given the researcher's positionality and…AQA
Data triangulation: Triangulating interview findings with other approaches, such as environmental quality surveys, to improve validity.AQA
Debt-Trap Diplomacy: A strategy where a creditor country intentionally extends excessive credit to a debtor country, with the intention of extracting economic or political…Pearson Edexcel
Decarbonisation: The process of reducing the carbon intensity of energy production, typically by replacing fossil fuels with renewable or nuclear sources.Pearson Edexcel
Decentralisation: The movement of people and businesses from city centres to the rural-urban fringe, driven by cheaper land and improved transport.AQA
Decompression melting: As mantle or plume material rises, falling pressure causes this process, which generates basaltic magma.AQA
Decoupling and the Environmental Kuznets Curve: The theoretical point at which economic growth no longer necessitates increased carbon emissions through technological leapfrogging and the transition to…Pearson Edexcel
Deflation: The removal of loose, fine-grained material by the wind, often creating deflation hollows or desert pavements.AQA
Deflation hollows: Wind erosion creates these by removing loose sand, leaving behind coarse desert pavements.AQA
Deformation and Discontinuity: The presence of faults, joints, and folds which create localized zones of weakness.Pearson Edexcel
Deindustrialisation: The absolute decline of manufacturing industries, often leaving derelict brownfield sites and causing structural unemployment.AQA
Deindustrialisation and Post-Industrial Transition: The shift from secondary to tertiary/quaternary sectors and the resulting socio-economic 'spiral of decline' or successful 'rebranding' in former industrial…Pearson Edexcel
Deindustrialisation and the Spiral of Decline: The structural decline of traditional manufacturing bases leading to the 'rusting' of industrial heartlands and the subsequent negative multiplier effect on…Pearson Edexcel
Demand reduction: Actively managing and reducing demand to alleviate pressure on energy supplies, decrease reliance on imports and lower greenhouse gas emissions without…AQA
Demographic and Economic Imbalance: The structural dependency of developed economies on migrant labor to offset aging populations and fill labor shortages in both high-skill (quaternary) and…Pearson Edexcel
Demographic and Social Influence: Analysis of how age, gender, ethnicity, and length of residence dictate the perception of and engagement with a locale.Pearson Edexcel
Demographic Dividend: A window offering rapid economic growth when falling birth rates create a bulge in the working-age population, if sufficient jobs are available.AQA, Pearson Edexcel
Demographic Flux: The impact of 'brain drain' and aging populations on the economic viability of regions, necessitating regeneration to retain human capital.Pearson Edexcel
Demographic Pressure and Resource Management: Evaluation of how shifts in dependency ratios and migration patterns necessitate infrastructure adjustments and the management of public service delivery.Pearson Edexcel
Demographic Transition: Analysis of how migration patterns and aging populations alter the socio-economic profile of a place, leading to increased pressure on services and potential…Pearson Edexcel
Dependency Ratio: The proportion of the population that is non-working (children and elderly) compared to the working-age population.Pearson Edexcel
Dereliction: Involves abandoned industrial or residential zones, often linked to deindustrialisation.AQA
Desalination: Removing dissolved salts from seawater using reverse osmosis to provide a climate-independent freshwater source for arid, coastal nations.AQA, Pearson Edexcel
Desertification: The degradation of land in arid, semi-arid and dry sub-humid areas, primarily involving soil degradation and vegetation loss.AQA
Desire lines: Straight lines directly connecting an origin to a destination, illustrating the general direction of movement regardless of the actual physical route taken.AQA
Destructive margins: Boundaries involving convergence, where subduction generates deep sea trenches, island arcs, explosive volcanoes and intense seismicity, while continental…AQA
Destructive waves: Waves with a weak swash and strong backwash, eroding material.AQA
Development: Economic and social progress, including improved sanitation, nutrition, healthcare, education and healthcare access, which drives changes in health patterns.AQA
Development and Vulnerability: The way a country's level of development, governance and prior preparedness shape the severity of impacts and the success of responses to a seismic event.AQA
Development processes: Processes such as industrialisation and agricultural advancement that alter relationships between the physical environment and population over time.AQA
Devolution and Autonomy: The transfer of political power from central to regional governments as a mechanism to appease separatist sentiment and maintain the integrity of the…Pearson Edexcel
Diaspora: A population that has been dispersed from its homeland but maintains strong cultural or emotional ties to it.Pearson Edexcel
Digital cartography: Presenting findings through interactive digital maps that are dynamic, easily updatable and highly visual, with layers that can be toggled on and off.AQA
Dimensions of sustainability: Balancing four dimensions: natural (biodiversity), physical (infrastructure), social (equity and health), and economic (employment).AQA
Disaster Response: Human responses evaluated by contrasting immediate actions, such as deployment of the Self-Defence Forces, with long-term recovery such as rebuilding higher…AQA
Discordant Coast: A coastline where geology consists of alternating bands of resistant and less resistant rock at right angles to the shore, leading to headland and bay…Pearson Edexcel
Dispersion: A descriptive statistic that describes spread, reported so extreme values do not distort the summary.AQA
Dispersion diagrams: One-dimensional graphs used to display the spread of a single variable, with each data point plotted as a mark along a single numerical axis.AQA
Divergent bar graph: Values extending in opposite directions from a central zero axis, effective for showing positive and negative changes.AQA
Divergent line graphs: Plot values above and below a zero line or average, effectively illustrating positive and negative changes, such as net migration or temperature anomalies.AQA
Diversion: Redirecting surface water from rivers to agricultural or urban areas for immediate local use.AQA
Dot maps: Maps that use identical dots to represent a specific quantity of a variable, such as one dot per 10,000 people, accurately showing spatial clustering and…AQA
Drainage basin: An open system in which energy and matter cross its boundaries, with inputs and outputs, stores and flows.AQA
Drainage Basin Dynamics: Analysis of the drainage basin as an open system where surpluses are dictated by the balance of inputs, outputs, and internal stores such as soil moisture and…Pearson Edexcel
drainage basin scale: A scale at which these processes dictate river discharge over days or weeks.AQA
Drainage basin storage areas: Stores such as soil moisture and groundwater aquifers, which are depleted when impermeable surfaces severely reduce infiltration.AQA
Drumlins: Streamlined mounds of till formed by subglacial deformation or deposition around an obstacle, indicating ice flow direction.AQA
Dynamic equilibrium: Achieved when inputs equal outputs, with the system constantly adjusting to maintain a balance rather than remaining static.AQA, Pearson Edexcel

E

Ecological efficiency: Energy is lost at each trophic level through respiration and heat following the 10% rule, so food chains rarely exceed four or five levels.AQA
Ecological Footprint: The total area of land and water required to sustain a population and absorb its waste, often extending far beyond its boundaries.AQA, Pearson Edexcel
Ecological impacts: Effects resulting from environmental or human-induced changes, such as biodiversity loss and disrupted nutrient cycles.AQA
Ecological succession: The directional change in a plant community over time, culminating in a stable climatic climax community determined by regional climate.AQA
Ecological succession and change: Local ecosystems are dynamic, and human-driven local factors alter their ecological balance and change their developmental trajectory.AQA
Economic development: A driver that, as it expands, intensifies demand for resources such as timber, food and fresh water, placing pressure on natural systems.AQA
Economic Disparity and Labor Mobility: The role of wage differentials and employment availability in driving South-North and rural-urban migration, often facilitated by the 'Migration Transition…Pearson Edexcel
Economic Diversification: The transition from agricultural dominance to a service-based economy, including tourism, leisure, and high-tech 'footloose' industries.Pearson Edexcel
Economic Exploitation and Resource Management: Analysis of the tension between extractive industries (mining, hydrocarbons) and the burgeoning 'last-chance' tourism sector in high-latitude and…Pearson Edexcel
Economic Hegemony: The role of GDP, trade blocs such as the EU and USMCA, and currency dominance in asserting global control and dictating the terms of international trade.Pearson Edexcel
Economic inequality: Disparities in income, employment, and access to services within urban areas.AQA
Economic Interdependence: The growth of global trade networks and the role of Foreign Direct Investment (FDI) in linking national economies, facilitated by the New International…Pearson Edexcel
Economic Interdependence and Asymmetry: Analysis of how trade agreements and FDI create symbiotic yet unequal relationships, often leading to primary sector dependence in developing nations.Pearson Edexcel
Economic Interdependence and Labor Markets: The integration of global markets creates structural demand for both high-skilled and low-skilled labor, driving migration through the establishment of global…Pearson Edexcel
Economic Liberalisation: The shift towards free-market policies, deregulation, and the removal of trade barriers facilitated by the Bretton Woods institutions (IMF, World Bank, WTO).Pearson Edexcel
Economic Liberalisation and Neoliberalism: The role of the 'Washington Consensus' institutions in promoting free-market capitalism, deregulation, and the removal of trade barriers globally.Pearson Edexcel
Economic Polarization: The role of income inequality and housing market accessibility in creating 'citadels' of wealth and 'ghettos' of deprivation, often exacerbated by neoliberal…Pearson Edexcel
Economic Restructuring: A shift in global manufacturing towards emerging economies like China and India, altering traditional trade flows.AQA, Pearson Edexcel
Economic Restructuring and Deindustrialization: Examination of the shift from secondary to tertiary and quaternary sectors, focusing on the 'spiral of decline' in post-industrial cities and the subsequent…Pearson Edexcel
Economic Statecraft and Sanctions: The use of trade embargoes, asset freezes, and aid conditionality to compel behavioral change in regimes violating human rights without resorting to armed…Pearson Edexcel
Economic Viability: Analysis of the Levelized Cost of Energy (LCOE), comparing the high initial capital expenditure (CAPEX) of renewables and nuclear against the low operational…Pearson Edexcel
Economic water scarcity: A situation where a region has physical water but lacks the infrastructure to extract or distribute it.AQA
Ecosystem interactions: Climate, soils and vegetation interact, with cold conditions slowing biological weathering and decomposition, which limits soil fertility and restricts…AQA
Ecosystem productivity: Net primary production is the rate at which plants accumulate energy or biomass, calculated as gross primary production minus respiratory losses.AQA
Ecosystem Resilience and Tipping Points: The capacity of biomes to absorb anthropogenic stress before undergoing irreversible state shifts, such as the transition of rainforests to savannahs.Pearson Edexcel
Ecosystem Service Provisioning: The reliance of human wellbeing on regulating services (climate regulation, water purification) and provisioning services (food, fresh water) derived from…Pearson Edexcel
Ecosystem services: The provisioning, regulating, cultural and supporting services that ecosystems provide and that are essential for human survival and wellbeing.AQA
Electronic overlays: Digitally stacking multiple data layers using Geographic Information Systems to analyse complex spatial correlations rapidly.AQA
End uses: The diverse applications of the ore, encompassing electrical wiring, plumbing, and renewable energy infrastructure.AQA
Endemic: A disease or condition regularly found among particular people or in a certain area (e.g., Malaria in tropical regions).Pearson Edexcel
Endogenous factors: The local, internal characteristics that create a place's identity, including both physical and human elements.AQA
Endoreic rivers: Rivers that flow into inland basins or lakes, never reaching the ocean.AQA
Energy conservation: Strategies essential to mitigate impacts, including improving domestic insulation, adopting smart grid technologies and reducing international trade distances…AQA
Energy dynamics: Energy flows unidirectionally through an ecosystem, entering primarily via solar radiation captured by autotrophs during photosynthesis and eventually lost as…AQA
Energy efficiency: Using technology to require less energy for the same task, such as LED bulbs.AQA
Energy flow: Movement of energy that is linear and ultimately lost as heat.AQA
Energy flows: Energy crosses the boundary of the global cycles, with solar radiation a primary energy source and gravity a driver mainly for water transfers.AQA
Energy Intensity: A measure of the energy efficiency of a nation's economy, calculated as units of energy per unit of GDP.Pearson Edexcel
Energy Mix: The proportion of different primary sources a country consumes.AQA, Pearson Edexcel
Energy Pathway: The physical route, including pipelines, shipping lanes, and transmission grids, taken by energy from producer to consumer.Pearson Edexcel
Energy security: Achieved by employing diverse strategies to boost domestic production and by reducing reliance on imported fuels.AQA, Pearson Edexcel
Energy Security and Geopolitics: The strategic control of fossil fuel reserves and transit routes, such as the Strait of Hormuz or the Nord Stream pipelines, as a primary determinant of…Pearson Edexcel
Energy strategies: These include mandating zero-carbon building standards and integrating renewable sources like solar arrays into urban design.AQA
Energy Trilemma: The triple challenge of providing energy that is secure, affordable (equitable), and environmentally sustainable.Pearson Edexcel
Enhanced greenhouse effect: Driven by a surplus in the atmospheric carbon budget, this is responsible for recent global climate change, with carbon dioxide and methane playing a role.AQA
Environmental advocacy: Campaigning and lobbying for enhanced protection of the environment, as when NGOs successfully campaigned against a minerals convention.AQA
Environmental and Climate Drivers: The emergence of 'climate refugees' due to slow-onset hazards like desertification and rapid-onset events like sea-level rise, challenging existing…Pearson Edexcel
Environmental classification: The division of cold environments into polar, periglacial, alpine and glacial regions according to their defining features.AQA
Environmental Commodification: The shift in attitudes toward the physical environment from stewardship and spiritual significance to a resource-extractive model driven by global market…Pearson Edexcel
Environmental degradation: The severe harm caused by extraction processes, including habitat destruction, groundwater contamination and atmospheric pollution, and by distribution…AQA
Environmental determinism and disease: Links to physical and socio-economic environments include impacts of environmental variables on transmission vectors.AQA
Environmental Diplomacy and Soft Power: The use of environmental leadership as a tool for international influence, contrasted with the impact of superpower unilateralism on the efficacy of global…Pearson Edexcel
Environmental Externalities: The transfer of polluting industries to regions with weaker regulatory frameworks, leading to the 'pollution haven' effect and significant local environmental…Pearson Edexcel
Environmental Externalities and Transboundary Tensions: Examination of how global production networks outsource environmental degradation, leading to international disputes over carbon footprints, water security,…Pearson Edexcel
Environmental Externalities of Resource Extraction: Evaluation of the physical degradation, including deforestation and water contamination, resulting from superpower-led demand for raw materials.Pearson Edexcel
Environmental Fragility and Resilience: The inherent vulnerability of periglacial and glacial systems to thermal changes and physical disturbance, where low resilience leads to irreversible…Pearson Edexcel
Environmental Governance: The struggle for leadership in climate change mitigation and the exploitation of the 'Global Commons', including the Arctic and deep-sea mineral resources.Pearson Edexcel
Environmental impact: Habitat destruction and massive carbon dioxide emissions caused by a wildfire event.AQA
Environmental Quality and Dereliction: The role of physical decay, brownfield sites, and poor housing stock in creating negative perceptions of place and deterring inward investment.Pearson Edexcel
Environmental Stewardship: The management of rural landscapes as a public good.Pearson Edexcel
Environmental Stewardship and Ecosystem Services: Examination of the regulating services provided by the cryosphere, including albedo-driven climate regulation and the provision of freshwater for 1.9 billion…Pearson Edexcel
Environmental Stewardship and Sustainability: The role of international agreements and NGOs in mitigating anthropogenic impacts, including the BBNJ Agreement (High Seas Treaty) and Marine Protected Areas…Eduqas
Environmental Sustainability: The assessment of energy sources based on their carbon intensity, ecological footprint, and long-term impact on biodiversity and climate systems.Pearson Edexcel
Environmental vulnerability: The varying susceptibility of different coastlines, where local factors such as isostatic rebound, coastal topography and existing defences mean impacts vary…AQA
Ephemeral streams: Streams that flow only temporarily following unpredictable rainfall.AQA
Epidemiological transition: A model describing a shift from high mortality caused by infectious diseases to lower mortality but higher morbidity from non-communicable, degenerative…AQA
Equilibrium and feedback: The long-term balance of the global carbon cycle, which natural variations and human impacts disrupt.AQA
Equilibrium Line: The specific altitude on a glacier where the rate of accumulation exactly matches the rate of ablation over a balance year.Pearson Edexcel
Equilibrium Line Altitude (ELA) Sensitivity: The ELA marks the boundary where annual accumulation equals annual ablation.Pearson Edexcel
Erratics: Boulders transported by ice and deposited on differing geology, like the Silurian grit erratics on carboniferous limestone in the Yorkshire Dales.AQA
Esker: A long, winding ridge of stratified sand and gravel deposited by a subglacial stream flowing in a tunnel under the ice.Pearson Edexcel
Eskers: Long, sinuous ridges deposited by subglacial meltwater streams.AQA
Ethical Consumerism: The practice of purchasing products based on the ethical and environmental reputation of the producer.Pearson Edexcel
Ethics and positionality: Researchers must ensure informed consent, protect anonymity, and avoid causing harm or distress, and must critically evaluate their own positionality and…AQA
Eustatic and Isostatic Interplay: Analysis of the synchronous and asynchronous relationship between global sea level changes (eustasy) and local crustal movements (isostasy), particularly…Pearson Edexcel
Eustatic change: A global alteration in sea volume or ocean basin capacity, often driven by glacial melting or thermal expansion.AQA, Pearson Edexcel
Eustatic Sea Level Rise: A global rise in sea level caused by the increased volume of water in the world's oceans, primarily due to thermal expansion and the melting of terrestrial ice.Pearson Edexcel
Eutrophication: The nutrient enrichment of water bodies, typically from agricultural runoff, leading to algal blooms and oxygen depletion.Pearson Edexcel
Evaluation of strategies: Assessing the ecological success of implemented strategies against economic and social costs, noting both successes and limitations in the specific setting.AQA
evaporation: A flow that transfers water from the hydrosphere to the atmosphere, driving cloud formation together with condensation.AQA
Evapotranspiration: The sum of evaporation from the land surface plus transpiration from plants, a critical link between the biological carbon and water cycles.Pearson Edexcel
Exfoliation: Outer rock layers peel away, often seen in granite.AQA
Exogenous factors: The external relationships and connections a place has with other places.AQA
Exogenous rivers: Rivers that originate in wetter adjacent regions and flow continuously through the arid landscape.AQA
Experienced places: Locations a person has physically visited, allowing them to develop a multi-sensory lived experience.AQA
External forces: Forces operating at different scales from local to global, including government policies, the decisions of transnational corporations, or the impacts of…AQA

F

Fairtrade: A movement that aims to create a level playing field for global trade by guaranteeing producers a fair price and safe working conditions.Pearson Edexcel
Feedback Loops: The amplification of global warming through the release of CH4 and CO2 from thawing cryosphere and drying wetlands, creating self-reinforcing cycles.Pearson Edexcel
Feedback Loops and System Resilience: The interaction between carbon release and global warming.Pearson Edexcel
Feedback mechanisms: Positive feedback amplifies change, whereas negative feedback dampens change and helps restore equilibrium.AQA, Pearson Edexcel
Feedback Mechanisms and System Sensitivity: Evaluation of internal Earth-system responses, specifically the ice-albedo feedback and the role of greenhouse gas amplification (CO2 and CH4) in modulating…Pearson Edexcel
Feedback Mechanisms and Tipping Points: The transition of carbon sinks to sources and the acceleration of hydrological instability through positive feedback loops, such as permafrost thaw and forest…Pearson Edexcel
Fetch: A factor determining wave energy, alongside duration and velocity, in generating waves from wind.AQA
Fieldwork ethics: Ethical practices include obtaining informed consent, ensuring anonymity, and phrasing questions neutrally to avoid leading the respondent.AQA
Fieldwork methodology: A mixture of methodological approaches, including interviews, used to gather primary data and build a comprehensive understanding of place and space.AQA
Fieldwork skills: Synthesising quantitative measurements with qualitative field observations to explain cycle dynamics.AQA
Financialisation and Debt: The transition toward service-led economies where financial markets dominate, often resulting in high levels of sovereign debt and vulnerability to global…Pearson Edexcel
Fire behaviour: Influenced by topography, as fires travel faster uphill.AQA
Fishing and whaling: Commercial fishing, especially for krill and Patagonian toothfish, threatens the foundation of the marine food web, while historical whaling has left lasting…AQA
Fjords: Drowned glacial troughs with steep sides and a shallow rock lip.AQA
Flandrian Transgression: The rapid global eustatic sea-level rise due to the melting of the last major ice sheets over the last 10,000 years.AQA
Flashy hydrograph: A hydrograph with a steep rising limb, high peak discharge and a short lag time, often resulting from impermeable surfaces or intense rainfall exceeding…AQA
Flood hydrograph: A graph illustrating how a river's discharge, measured in m³ s⁻¹, responds to a specific rainfall event over time, plotting rainfall as a bar chart and…AQA
Flood Risk Management and Resilience: Critical evaluation of the shift from traditional hard engineering (dams, levees) toward integrated, sustainable soft engineering and Natural Flood Management…Pearson Edexcel
Flow lines: Lines that depict the exact route taken, with the line width drawn proportional to the volume of movement.AQA
Flows: Stemflow, infiltration, overland flow and channel flow, which move water between the stores.AQA
Fluvial processes: Episodic flash floods carve steep wadis and drive parallel retreat of slopes, leaving pediments and residual inselbergs, while deposited sediment forms…AQA
Fluvial Systems and Drainage Basin Management: Analysis of the hydrological cycle and the impact of human intervention on discharge and flood risk.Pearson Edexcel
Fluvioglacial erosion: Occurs primarily through hydraulic action and abrasion of bedrock by a high suspended load.AQA
Fluvioglacial processes: Processes creating landforms of erosion and deposition through glacial meltwater, including meltwater channels, kames, eskers and outwash plains.AQA
Flux: The rate of flow of carbon or water between different stores, measured in units such as Gigatonnes of Carbon (GtC) per year.Pearson Edexcel
Food Miles: The distance food is transported from the time of its production until it reaches the consumer.Pearson Edexcel
Forced Displacement and Geopolitics: The impact of conflict, persecution, and state failure on involuntary movement, necessitating a distinction between refugees, asylum seekers, and internally…Pearson Edexcel
Foreign Direct Investment (FDI): The role of TNCs as primary agents of change, injecting capital into NEEs to establish production hubs, thereby driving the multiplier effect and…Pearson Edexcel
Formal vs. Informal Representations: The contrast between objective, statistical data (e.g., Census, geospatial mapping) and subjective, creative interpretations (e.g., literature, film,…Pearson Edexcel
Frontal systems: Warm, cold, or occluded fronts whose passage across a synoptic map allows short-term weather changes to be forecast.AQA
Frost action: Water freezes and expands in rock joints, weakening the bedrock.AQA
Frost creep: A process that contributes to mass movement through the cyclical heaving and settling of soil particles.AQA

G

Gender Inequality and Social Progress: Investigation into the correlation between female empowerment, reproductive rights, and broader social development indicators, specifically maternal…Pearson Edexcel
Gentrification: A change in the social structure of a place when wealthier people move into a lower-income area, often leading to rising housing costs and the displacement of…Eduqas, Pearson Edexcel
Geographic Information Systems: Software used to store, analyse, and display data, into which remotely sensed data is often integrated to layer variables and enhance spatial analysis.AQA
Geographic Information Systems (GIS): Systems such as ArcGIS or Google Earth that allow layers to be toggled on and off and transparency to be adjusted.AQA
Geographical enquiry: An investigation for which appropriate electronic databases are selected to source secondary data.AQA
Geographical relationships: Links between features that can be explained by synthesising information from multiple atlas maps, such as physical and political maps.AQA
Geological structure and lithology: Factors influencing coastal development, including rock lithology of hard versus soft rock and geological structure such as dip and faults.AQA
Geomorphic feedback and equilibrium: Positive and negative feedback, and dynamic equilibrium, applied to explain how desert systems respond to environmental changes.AQA
Geomorphic Feedback Loops: The relationship between subaerial debris production and marine transport capacity.Pearson Edexcel
Geomorphic Hazards: The increased frequency of Glacial Lake Outburst Floods (GLOFs), landslides, and debris flows resulting from the loss of ice-buttressing and active layer…Pearson Edexcel
Geomorphic Process-Response: The relationship between marine processes (hydraulic action, abrasion, corrosion) and sub-aerial processes (weathering and mass movement) in shaping…Pearson Edexcel
Geomorphic Process-Response Systems: Analysis of the mechanical and chemical processes of erosion—specifically hydraulic action, abrasion, attrition, and solution—and how these energy inputs…Pearson Edexcel
Geomorphological processes: The processes forming these landscapes, including flocculation, colonisation by pioneer halophytes and the trapping of further sediment.AQA
Geopolitical Border Management: The conflict between liberal economic needs for labor mobility and political pressures for securitization and restrictive immigration policies.Pearson Edexcel
Geopolitical Influence and Soft Power: The shift from hard military power to soft cultural and diplomatic influence, including the role of state-owned media and international aid in establishing…Pearson Edexcel
Geopolitical Leverage and Strategic Alignment: Assessment of how developing nations utilize their geographic location or natural resources to negotiate aid, security, and investment from competing…Pearson Edexcel
Geopolitical Power Dynamics: The transition from bipolarity to multipolarity and the rise of the G20 as a primary forum for international economic cooperation.Pearson Edexcel
Geopolitical Realism and Resource Security: The use of military force by superpowers to secure strategic assets, such as energy corridors or maritime chokepoints, frequently justified through the…Pearson Edexcel
Geopolitical Stability and Conflict: The relationship between the number of power poles and global security.Pearson Edexcel
Geopolitical tensions: Disputes arising from energy insecurity and the strategic control of energy pathways, such as over Arctic resources or pipeline routes.AQA, Pearson Edexcel
Geopolitics: The influence of geographical factors on international politics and international relations.Pearson Edexcel
Geopolitics and power dynamics: Post-1945 agencies such as the UN aim to promote economic growth and geopolitical stability, yet structures like the Security Council veto can perpetuate…AQA
Geopolitics of Human Rights: The strategic use of human rights records by global powers to justify economic sanctions, diplomatic isolation, or military intervention in the pursuit of…Pearson Edexcel
Geospatial technologies: Technologies such as GIS, GPS and remote sensing that are used to collect, analyse and present geographical data.AQA
Geospatial technology: Modern technologies used to interpret geo-located data and digital imagery such as satellite photographs or GIS outputs.AQA
Gini Coefficient: A statistical measure of economic inequality in a population.Pearson Edexcel
Glacial deposition: Occurs when ice loses capacity to transport debris, often during ablation.AQA
Glacial dynamics: A positive budget causes the glacier to advance, while a negative budget causes retreat.AQA
Glacial Geomorphology as Proxy Evidence: The reconstruction of past ice extent relies on the analysis of relict landforms; erosional features like striations and U-shaped valleys indicate ice flow…Pearson Edexcel
Glacial System Dynamics: The role of the glacial budget and basal thermal regime (cold-based vs.Pearson Edexcel
Glacial trough: A steep-sided valley formed when a glacier moving down a river valley deepens it.AQA
Global common: A region that falls outside the political jurisdiction of any single nation and is governed instead by the Antarctic Treaty System.AQA
Global Commons and Resource Management: The management of Areas Beyond National Jurisdiction (ABNJ) and the application of the 'Common Heritage of Mankind' principle to deep-sea mining and high-seas…Eduqas
Global Economic Rebalancing: The transition of the global economic center of gravity from the North Atlantic to the Asia-Pacific, driven by FDI, manufacturing shifts, and the rise of a…Pearson Edexcel
Global Environmental Governance: The role of superpowers in international treaties like the Paris Agreement and the impact of their domestic industrial policies on global carbon budgets.Pearson Edexcel
Global Financial Governance: The role of the IMF in maintaining exchange rate stability and providing lender-of-last-resort facilities during balance of payments crises.Pearson Edexcel
Global governance: The emergence and developing role of norms, laws and institutions in regulating and reproducing global systems.AQA, Pearson Edexcel
Global governance and institutions: Complex rule-making to manage global affairs, involving agreements, norms and institutions rather than a single sovereign authority.AQA
Global Governance and Legal Frameworks: The role of supranational bodies, including the International Criminal Court (ICC) and the International Court of Justice (ICJ), in establishing and enforcing…Pearson Edexcel
Global Governance and Multilateralism: The shift from bilateral diplomacy to collective decision-making through Intergovernmental Organisations (IGOs) to address trans-boundary issues such as…Pearson Edexcel
Global Governance and Supranationalism: The shift from state-centric power to collective decision-making through IGOs, where member states cede aspects of sovereignty to address transboundary…Pearson Edexcel
Global health management: Management and mitigation strategies range from distributing insecticide-treated nets and indoor residual spraying to antimalarial drugs and community…AQA
Global supply chains: The complexities of international supply chains through which a commodity is purchased, transported and ripened by large transnational corporations.AQA
Globalisation: The process of increasing economic, political, and cultural interconnectedness that challenges the traditional autonomy of the nation-state through the flow…Pearson Edexcel
Globalisation and Connectivity: The role of shrinking world technologies, such as low-cost airlines and digital communication, in reducing intervening obstacles and facilitating rapid labor…Pearson Edexcel
Globalisation and Economic Interdependence: The integration of national economies through trade, capital flows, and the spatial division of labor, often dictated by the strategic decisions of…Pearson Edexcel
Globalisation and Sovereignty: The erosion of the nation-state's traditional power by Transnational Corporations (TNCs) and Intergovernmental Organisations (IGOs), leading to 'defensive'…Pearson Edexcel
Globalisation and the Global Shift: Analysis of how the movement of manufacturing to Low-Income Countries (LICs) and Newly Industrialised Countries (NICs) has created 'winners' in emerging…Pearson Edexcel
Globalisation and Time-Space Compression: How increased connectivity through ICT and transport reduces the friction of distance, altering the economic base and social composition of local places.Pearson Edexcel
Glocalisation: The adaptation of a global product or service to the specific cultural, geographical, or legal requirements of a local market.Pearson Edexcel
Glocalization: The process by which global products or services are adapted to suit local cultural and legal requirements.Pearson Edexcel
Governance: The management of resources and the policy-making processes that influence disaster risk reduction and emergency response efficacy.Pearson Edexcel
Governance and Geopolitics: Evaluation of how national fiscal policies, international aid, and the influence of Intergovernmental Organisations (IGOs) like the IMF and World Bank dictate…Pearson Edexcel
Governance and Institutional Capacity: The role of political stability, corruption levels, and planning regulations in determining disaster outcomes.Pearson Edexcel
Governance and Jurisdictional Frameworks: The role of international law (e.g., Antarctic Treaty) versus national policy in regulating human activity and mitigating the 'tragedy of the commons' in…Pearson Edexcel
Government policies: Forces such as a national government policy creating an Enterprise Zone, which can stimulate local job growth but may displace existing businesses.AQA
Granular disintegration: Targets heterogeneous rocks like sandstone, where minerals expand at different rates, crumbling the rock into sand.AQA
Gravitational Force Mechanisms: Assessment of ridge push (gravitational sliding) at divergent boundaries and slab pull (negative buoyancy) at subduction zones as primary drivers of motion.Pearson Edexcel
Greywater: Systems that specifically reuse untreated domestic wastewater from sinks and showers for flushing toilets or watering gardens.AQA
Ground Thermal Regimes and Permafrost Dynamics: Analysis of the energy balance between the atmosphere and the lithosphere, focusing on the spatial distribution of continuous, discontinuous, and sporadic…Pearson Edexcel

H

Hard Engineering vs. Soft Engineering: Evaluation of high-cost, high-impact structural interventions such as sea walls and groynes against lower-impact, sustainable methods like beach nourishment…Pearson Edexcel
Hard Power: The use of military and economic means to influence the behavior or interests of other political bodies.Pearson Edexcel
Hazard impacts: Primary and secondary, environmental, social, economic and political effects of a hazard.AQA
Hazard perception: Shaped by economic and cultural determinants, this influences how an individual or community views hazard risk.AQA
Hazard Profiles and Magnitude: The physical characteristics of tectonic events, including magnitude (Moment Magnitude Scale), frequency, duration, and areal extent.Pearson Edexcel
Health and well-being: Affected by environmental quality, including air quality and water quality, which influence respiratory, cardiovascular and waterborne diseases.AQA
Hegemony: The political, economic, or military predominance of one state over others within the international system.Pearson Edexcel
Hegemony and Global Dominance: The concentration of power in a single state or bloc, allowing for the dictation of international norms and economic systems.Pearson Edexcel
Hotspot volcanoes: Where basaltic magma reaches the surface it builds these, commonly shield volcanoes.AQA
Human communities and vulnerability: Collecting, studying and representing geographical data about human communities carries ethical and socio-political implications, such as when interviewing…AQA
Human impact: Anthropogenic pressures such as overgrazing, deforestation, overcultivation and rapid population growth that contribute to desertification.AQA
Human impact on the environment: Human-driven local factors, such as agriculture, urban change and the planned and unplanned introduction of new species, heavily influence the development of…AQA
Human intervention: Human impacts that significantly accelerate changes in the carbon cycle, including hydrocarbon fuel extraction and burning, farming practices, deforestation…AQA
Human intervention in natural systems: Human impact including farming practices, land use change and water abstraction, which significantly alter the pathways of the water cycle.AQA
Human perception: People's perceptions of issues, into which interviews can offer deep insights.AQA
Human-environment interaction: Relationships in which climatic characteristics influence human activities and population density, as when monsoon climates support intensive wet rice…AQA
Hydro-politics: The concept used when discussing international conflicts, particularly regarding upstream versus downstream power dynamics.AQA
Hydrological and Aeolian Interactions: Examination of the role of nivation in hollow development and the significance of wind-blown loess deposits and niveo-aeolian processes in shaping periglacial…Pearson Edexcel
Hydrological Feedback Loops: The transition from meteorological drought to hydrological and agricultural drought, involving soil moisture depletion and reduced baseflow.Pearson Edexcel
Hydrological processes in glaciated regions: As discharge decreases, the meltwater loses competence and capacity, leading to deposition of sediment.AQA
Hydrophytic flora: Plants supported by a permanent water supply, as in a pond, adapted to fluctuating oxygen.AQA
Hydrosere: Primary succession in freshwater, where aquatic plants trap sediment in a pond, gradually reducing water depth.AQA
Hydrosphere: The largest store, containing approximately 96.5% of global water, primarily in oceans.AQA
Hypothesis testing: Testing whether a sample pattern provides evidence against a null hypothesis, with the test and significance level chosen before interpreting results.AQA

I

ICZM (Integrated Coastal Zone Management): A holistic management strategy that coordinates the activities of all stakeholders to achieve sustainable use of coastal resources.Pearson Edexcel
Identity: Something shaped by place, alongside belonging and overall well-being, in human life.AQA
Impermeable surfaces: Surfaces like tarmac and concrete that replace natural vegetation and severely reduce infiltration, increasing surface runoff.AQA
Index of Multiple Deprivation (IMD): A UK government qualitative study measuring deprivation at a small-area level across England, combining indicators like income, employment, health, and…Pearson Edexcel
Inequality and social justice: Institutions can inadvertently exacerbate inequalities and injustices, with policies such as structural adjustment programmes disproportionately harming the…AQA
Infant Mortality Rate (IMR): The number of deaths of infants under one year old per 1,000 live births.Pearson Edexcel
Inferential statistics: Use sample evidence, a null hypothesis and a significance threshold to judge whether a pattern is unlikely under chance.AQA
Infiltration: The process by which water transfers from the surface into the soil profile; rate is governed by soil porosity and antecedent moisture.Pearson Edexcel
Infrastructure Investment: The strategic allocation of national capital toward large-scale transport and digital projects (e.g., HS2, 5G rollout) to reduce friction of distance and…Pearson Edexcel
Insider and Outsider Perspectives: The divergence in place meaning between those who live or work in a location (topophilia, lived experience) and those who view it through media or tourism…Pearson Edexcel
Insider perspective: A strong sense of belonging, familiarity, and emotional attachment to a place, often developed through long-term residence.AQA
Insolation: Incoming solar radiation that is intense due to the lack of cloud cover, providing thermal energy that drives extreme diurnal temperature ranges.AQA
Institutional and Political Drivers: State-led interventions, including historical redlining, zoning laws, and apartheid-era legislation, which formalize and entrench spatial divides through…Pearson Edexcel
Institutional Governance and Rule of Law: Analysis of how state capacity, judicial independence, and the transparency of legal frameworks determine the enforcement of human rights and the protection…Pearson Edexcel
Institutions: Organisations such as the World Trade Organization (WTO) or the United Nations that enforce these rules and facilitate cooperation.AQA
Integrated Coastal Zone Management (ICZM): The shift toward holistic, multi-stakeholder management that considers the entire sediment cell rather than isolated administrative boundaries.Pearson Edexcel
Inter-quartile range: The upper quartile minus the lower quartile, describing the middle 50% of ordered values and making it more robust for skewed data or outliers.AQA
Interception: The capture of precipitation by plant foliage or leaf litter, which subsequently evaporates, preventing water from reaching the soil.Pearson Edexcel
Interdependence: The mutual reliance between countries, taking economic, political, social and environmental forms in the contemporary world.AQA
Intergovernmental Organisation (IGO): An organisation composed primarily of sovereign states, established by treaty.Pearson Edexcel
Internal deformation: Ice crystals slide within the ice as a mechanism of ice movement.AQA
International government organisations: Include United Nations agencies such as the United Nations Environment Programme and the International Whaling Commission.AQA
International institutions: Forces such as the EU or World Bank that dictate funding and infrastructure developments which transform local places.AQA
International law and treaties: Frameworks that establish the rights of all humanity to share the benefits of the global commons, such as scientific research or marine resources.AQA
International Migration Drivers: Analysis of post-colonial 'push-pull' factors, including the 1948 British Nationality Act, EU expansion (A8 accession), and global conflict-driven displacement.Pearson Edexcel
Interpolation: Using the line of best fit to estimate values within the data range.AQA
Interquartile range: A measure of spread that can be located from the diagram to evaluate data reliability.AQA
Intra-plate features: Plumes occur away from tectonic boundaries, rather than being confused with constructive plate margins.AQA
Isobars: Lines of equal atmospheric pressure, whose spacing indicates the steepness of the pressure gradient and the strength of winds.AQA
Isoline maps: Maps that connect points of equal value using continuous lines, ideal for gradual transitions like temperature isotherms or elevation contours, avoiding…AQA
Isostatic change: A localised adjustment of land height, such as the post-glacial rebound occurring in northern Britain following the melting of Pleistocene ice sheets.AQA
Isostatic Rebound: The rise of land masses that were depressed by the weight of ice sheets during the last glacial period, affecting local relative sea level.Pearson Edexcel
IWC Whaling Moratorium (1982): Manages marine life by banning commercial whaling.AQA

J

Jökulhlaup: A sudden, catastrophic glacial outburst flood often triggered by subglacial volcanic activity or the failure of an ice-dammed lake.Pearson Edexcel

K

Kame: An irregularly shaped hill or mound composed of stratified sand and gravel, deposited by meltwater in contact with a retreating glacier snout.Pearson Edexcel
Kames: Mounds or terraces of sand and gravel deposited in ice-contact hollows, crevasses or at the ice margin.AQA

L

Lag time: The time difference between peak rainfall and peak discharge on a hydrograph, significantly shortened in urban catchments.AQA, Pearson Edexcel
Land use: A human endogenous factor, alongside the built environment and infrastructure, that shapes the internal character of a place.AQA
Landform: An individual feature, like a stack or spit, that combines with related features to create a characteristic landscape.AQA
Landscape: A broader area comprising multiple related landforms that combine spatially and temporally to create characteristic landscapes.AQA
Landscape and Iconography: The strategic use of physical monuments, architecture, and urban planning to project a specific national narrative and legitimise political authority.Pearson Edexcel
Landscape evolution: How related landforms combine to form characteristic landscapes, with individual landforms spatially combining and interacting over time.AQA
Landscape evolution over time: Cliffs retreat as waves undercut the base, and over time the unsupported overhang collapses, leaving a gently sloping wave-cut platform that dissipates wave…AQA
Latitude and altitude: The two physical factors determining where cold environments are located, with polar and periglacial zones at high latitudes and alpine zones at high altitudes.AQA
Laws: Legally binding frameworks, like the UN Convention on the Law of the Sea (UNCLOS), which regulates maritime activities.AQA
Leaching: The downward movement of soluble minerals through the soil profile, which acts as an output from the system.AQA
Legal Accountability and Deterrence: The role of the ICC and special tribunals in prosecuting war crimes and crimes against humanity to establish a global precedent for human rights enforcement.Pearson Edexcel
Lifestyle and health: Diets high in saturated fats, physical inactivity and smoking significantly raise the risk of coronary heart disease.AQA
Line of best fit: A line drawn through the centre of the data cluster to visually represent the trend, ensuring a roughly equal number of points lie above and below the line.AQA
Liquefaction: The process by which saturated, unconsolidated sediments transform into a substance that acts like a liquid when shaken, causing building collapse.Pearson Edexcel
Lithological and Structural Control: Investigation into how rock type (competence), jointing, bedding planes, and dip (seaward vs.Pearson Edexcel
Lithological Control: The influence of rock type, including permeability, jointing, and bedding planes, on susceptibility to mechanical and chemical weathering.Pearson Edexcel
Lithological Resistance: The chemical and physical composition of rock units determining susceptibility to hydraulic action, abrasion, and solution.Pearson Edexcel
Lithology: The physical and chemical composition of rocks, determining their resistance to erosion and weathering.Pearson Edexcel
Lithosere: Primary succession on bare rock, where pioneer species like lichens colonise rock, breaking it down to form rudimentary soil.AQA
Lithosphere: The largest store, containing over 99.9% of global carbon, primarily in sedimentary rocks like limestone and fossil fuels.AQA, Pearson Edexcel
Lithospheric Sequestration: The process of carbon being locked in sedimentary rocks like limestone and chalk through the accumulation of marine organisms and chemical precipitation.Pearson Edexcel
Litter: One of the three main stores in Gersmehl's model, made up of dead organic matter.AQA
Liveability: A concept focusing on the quality of life, safety, and well-being of residents, ensuring cities are desirable places to live.AQA
Lived Experience: The emotional and lived reality captured by diverse media, highlighting the tension with statistical fact.AQA, Pearson Edexcel
Localism: The reduction of globally sourced goods and services in favour of locally sourced alternatives to increase sustainability.Pearson Edexcel
Longshore drift: Transports sediment along the coast; where the coastline changes direction, simple spits extend into the sea.AQA, Pearson Edexcel
Low-energy environments: Sheltered coastal settings, such as the Severn Estuary, in which estuarine mudflats and saltmarshes develop.AQA

M

Magma plumes: A theoretical model of anomalously hot mantle upwelling, with some deep-plume models extending towards the core-mantle boundary.AQA
Magnitude: The size or intensity of a hazard event, measured on logarithmic scales such as the Moment Magnitude Scale (MMS) or Volcanic Explosivity Index (VEI).Pearson Edexcel
Magnitude and frequency: An inverse relationship in which high-magnitude events occur with lower frequency and less regularity.AQA
Malthusian: The view that geometric population growth outstrips arithmetic food supply, causing famine.AQA
Management and Sustainability: Evaluation of Shoreline Management Plans (SMPs), specifically the transition from 'Hold the Line' to 'Managed Realignment' and 'No Active Intervention' in…Pearson Edexcel
Management measures: Targeted measures, such as habitat restoration or access restrictions, designed to mitigate negative impacts on local ecosystems.AQA
Management of the Global Commons: The development of regulatory frameworks for resource domains outside national jurisdiction, such as the high seas, Antarctica, and the atmosphere, utilizing…Pearson Edexcel
Mantle Dynamics: The role of radioactive decay in the core and mantle creating convection currents that exert basal drag on overlying tectonic plates.Pearson Edexcel
Mantle Plume: A localized column of exceptionally hot magma rising from deep within the mantle.Pearson Edexcel
Marine erosion processes: Processes such as hydraulic action, abrasion and corrosion that wear away the coast, with hydraulic action being the force of water and trapped air…AQA
Marine Transgression and Sea Level Change: Analysis of the relative sea-level change resulting from the interplay between global eustatic rises and local isostatic subsidence or rebound.Pearson Edexcel
Mass balance: The balance between accumulation as inputs and ablation as outputs, which is positive when accumulation exceeds ablation and negative when ablation exceeds…AQA
Mass Movement Mechanisms: Classification of movement based on water content and velocity.Pearson Edexcel
Mean: The mathematical average, calculated by summing all values and dividing by the total number of observations.AQA
Measure and measurement: Selecting appropriate units and tools to collect or interpret data.AQA
Measurement error: Addressed by calibration, repeated readings and standard procedures, and kept separate from sampling error.AQA
Measures of central tendency: Statistics that summarise a dataset by identifying its central or typical value, such as the mean, mode and median.AQA
Measures of dispersion: Statistics that describe how widely data values are spread.AQA
Media places: Locations known only through representations in film, literature, or news, rather than through physical visit.AQA
Median: A measure of central tendency that can easily be located from the diagram by counting the data points.AQA
Mega cities: Urban areas with populations over 10 million, exhibiting distinct contemporary characteristics including hyper-connectivity and extreme density.AQA
Meltwater channels: Channels that can be subglacial, ice-marginal or proglacial, with their form reflecting water route, discharge, sediment load and pressure.AQA
Meltwater dynamics: Meltwater streams flow under high hydrostatic pressure within subglacial channels, giving them significant erosive power.AQA
Meteorological Drivers of Inundation: Investigation into how atmospheric pressure drops and wind stress during cyclonic events generate storm surges, exacerbated by coastal morphology and…Pearson Edexcel
Meteorological Drought: A period of substantially below-average precipitation, often the first stage in a drought sequence leading to hydrological and agricultural impacts.Pearson Edexcel
Meteorological hazards: Observable weather hazards to which atmospheric processes can be linked through understanding weather maps.AQA
Migration and Diaspora: How the movement of people creates hybrid identities and challenges monolithic, ethnic-based definitions of the 'nation' through the creation of transnational…Pearson Edexcel
Military Humanitarianism: The deployment of armed forces to create 'safe zones,' provide aid security, or topple regimes to end systemic ethnic cleansing or genocide.Pearson Edexcel
Mineral nutrient cycling: The continuous movement of essential chemical elements, such as nitrogen and phosphorus, through an ecosystem.AQA
Mitigation: A characteristic human response that, together with management, forms part of the Hazard Management Cycle's ongoing phases.AQA, Pearson Edexcel
Mitigation and Adaptation: Examination of proactive strategies, including land-use zoning, engineering defenses, and community preparedness, versus reactive emergency responses.Pearson Edexcel
Modal shifts: Encouraging people to move from private cars to public transport or active travel, supported by subsidising electric vehicles and improving public transport.AQA
Mode: The most frequently occurring value, useful for categorical data.AQA
Morbidity: The incidence of disease or illness within a population, or the prevalence of illness.AQA, Pearson Edexcel
Morphological Evolution of Landforms: Investigation into the development of submergent features such as rias, fjords, and dalmatian coasts, contrasted with emergent features like raised beaches…Pearson Edexcel
Mortality: The incidence of death within a population, measured by death rates.AQA
Moulin: A vertical or near-vertical shaft within a glacier through which supraglacial meltwater enters the englacial and subglacial drainage systems.Pearson Edexcel
Mudflows: Secondary hazards, also called lahars, triggered by rainfall or melting ice.AQA
Multi-scalar Governance: The interaction between global frameworks like the UNFCCC, national Net Zero policies, and local grassroots conservation initiatives.Pearson Edexcel
Multilateral Aid: Assistance provided by governments to international organisations (like the UN or World Bank), who then distribute it to developing countries.Pearson Edexcel
Multiplier effect: The process by which an initial increase in spending leads to a larger overall increase in local economic activity.Eduqas
Multipolarity: A distribution of power in which more than two nation-states have significant and comparable amounts of military, cultural, and economic influence.Pearson Edexcel
Mycorrhizal fungi: Fungi used by flora like heather on acidic, nutrient-poor soils to extract scarce nutrients.AQA

N

Nationalism: The ideological alignment of a cultural or ethnic identity (the nation) with a political entity (the state), often driving movements for self-determination or…Pearson Edexcel
Natural Increase: The percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate.Pearson Edexcel
Near and far places: Places distinguished by objective geographical distance, but also by emotional or cultural connections, so a distant city might feel near through globalised…AQA
Negative budget: A deficit caused when outputs exceed inputs, resulting in coastal retreat and erosion.AQA
Negative feedback: A process that dampens effects, as when severe pollution increases mortality, reducing population and resource pressure.AQA
Neo-Malthusian: The application of Malthusian thinking to all finite resources, predicting systemic collapse.AQA
Neo-Malthusian perspectives: Views arguing that unchecked growth will exceed Earth's carrying capacity, leading to resource depletion and environmental degradation, exacerbated by climate…AQA
Neocolonialism: The use of economic, political, or cultural pressures to control or influence other countries, particularly former dependencies.Pearson Edexcel
Neoliberalism: The ideological shift toward free-market capitalism, reducing state intervention to permit capital mobility and incentivise Foreign Direct Investment (FDI).Pearson Edexcel
Neoliberalism and Deregulation: The promotion of free-market capitalism, privatization, and the reduction of state intervention in the economy as a condition for global integration.Pearson Edexcel
Neoliberalism and Market Liberalisation: The influence of the 'Washington Consensus' on development policy, emphasizing privatization, deregulation, and trade liberalization as drivers of economic…Pearson Edexcel
New International Division of Labour (NIDL): The spatial shift of manufacturing industries from advanced capitalist countries to developing countries.Pearson Edexcel
Nivation: Combines freeze-thaw and meltwater removal beneath snow patches.AQA, Pearson Edexcel
Non-communicable Diseases (NCDs): Medical conditions or diseases that are not infectious or transmissible among people, such as cancer or diabetes.Pearson Edexcel
Non-state actors: Independent organisations, such as NGOs, that are not formed by member states, unlike intergovernmental organisations.AQA
Norms: Accepted standards of behaviour, such as the expectation of human rights protection.AQA
Nuclear power: A high-yield, low-carbon alternative to fossil fuels that faces challenges regarding high capital costs and radioactive waste disposal.AQA
Nuclear waste: Highly radioactive material generated by the production and consumption cycle of nuclear energy, requiring secure, long-term geological disposal.AQA
Nuées ardentes: Glowing avalanches, a specific highly destructive type of pyroclastic flow associated with explosive eruptions at destructive margins.AQA
Numeracy: The use of number, measure and measurement.AQA
Nutrient cycling: Slow decomposition of organic matter restricts nutrient cycling, demonstrating a tightly coupled, fragile ecosystem.AQA

O

Ocean acidification: A process where increased dissolved carbon dioxide lowers ocean pH, impacting marine ecosystems, with the ocean remaining slightly alkaline but becoming less…AQA
Ocean-Atmosphere Exchange: The role of the physical and biological pumps in regulating atmospheric CO2.Pearson Edexcel
Ocean-atmosphere interactions: Cold ocean currents cool onshore winds, causing offshore condensation and fog but preventing rain from reaching the adjacent desert.AQA
Open System: A system where both energy and matter transfer across boundaries (e.g., a drainage basin).Pearson Edexcel
Optimum population: A dynamic state where population size and resources maximise per capita income and quality of life.AQA
Orbital Forcing and Cyclicity: The primary driver of Pleistocene ice distribution is Milankovitch cycles, where variations in eccentricity, axial tilt (obliquity), and precession dictate…Pearson Edexcel
Orbital Forcing and Milankovitch Cycles: Analysis of eccentricity, obliquity, and precession as the primary pacemakers of Pleistocene glacial-interglacial transitions.Pearson Edexcel
OS maps: Maps analysed at a variety of scales, such as 1:25,000 or 1:50,000, to identify spatial patterns.AQA
Outliers: Anomalies that sit far outside the main cluster of data points and prompt further geographical investigation into the causes of these extreme values.AQA
Outsider perspective: Feelings of alienation, unfamiliarity, or exclusion from a place, as might be experienced by a tourist or newly arrived migrant.AQA

P

Palaeomagnetism: The study of the Earth's magnetic field recorded in rocks, providing evidence for seafloor spreading through magnetic striping.Pearson Edexcel
Paleomagnetic Evidence: The recording of geomagnetic reversals in basaltic oceanic crust, providing empirical verification for seafloor spreading and crustal age gradients.Pearson Edexcel
Particulate pollution: Physical matter such as soot or dust, which acts as hygroscopic condensation nuclei and increases the incidence of urban fogs.AQA
Path Dependency: The tendency for a system to continue along a specific trajectory due to historical investments in infrastructure, often referred to as 'Carbon Lock-in'.Pearson Edexcel
Peak production: The point in time when the maximum rate of extraction is reached, after which production enters terminal decline.AQA
Percolation: The deeper downward movement of water through soil and permeable rock into the groundwater store.Pearson Edexcel
Permafrost: Ground that remains continuously at or below 0 °C for at least two consecutive years.AQA
Photo-chemical smog: A secondary pollutant formed when sunlight reacts with vehicle exhaust emissions like nitrogen oxides.AQA
Photosynthetic Sequestration: The conversion of atmospheric CO2 into organic biomass by autotrophs, forming the basis of terrestrial and marine food webs and acting as a primary carbon…Pearson Edexcel
Phreatic Zone: The area of an aquifer, below the water table, in which relatively all pores and fractures are saturated with water.Pearson Edexcel
Physical Drivers of Deficit: Analysis of atmospheric circulation patterns, including high-pressure blocking and teleconnections like ENSO, that inhibit precipitation.Pearson Edexcel
Physical overlays: Placing transparent sheets, such as tracing paper or acetate, over base maps to manually draw and compare variables.AQA
Physical systems: Environmental variables such as climate and topography, including drainage, which influence the incidence of disease.AQA
Physical water scarcity: A lack of rainfall or surface water, reflecting how global water availability is determined by the physical environment, including climate, river systems and…AQA
Physical-Human Interface: The interaction between high-energy marine environments and vulnerable human settlements, focusing on how lithology and fetch determine the severity of…Pearson Edexcel
Pie charts: Display categorical data as slices of a circle, where each angle is proportional to the category's percentage of the total.AQA
Place: A space given meaning through human experience, defined using the interconnected elements of location, locale and sense of place.AQA
Place identity and meaning: How a place is currently perceived and experienced, being a direct product of its historical and ongoing economic and social evolution.AQA
Place Perception and Identity: The conflict between 'insider' perspectives (lived experience) and 'outsider' perspectives (media representation/corporate branding) in defining the character…Pearson Edexcel
Place Rebranding and Re-imaging: The deliberate manipulation of place identity by urban planners and marketing agencies to alter external perceptions and stimulate economic regeneration.Pearson Edexcel
Plagioclimax: A stable plant community maintained by continuous human intervention, which prevents the natural climax from establishing.AQA
Planning Deregulation: The use of statutory instruments to relax development controls, such as the creation of Enterprise Zones and Freeports, to incentivize private sector…Pearson Edexcel
Plant succession (halosere): A succession initiated as pioneer halophytes colonise the mud, raising the land surface and allowing less salt-tolerant plants to establish.AQA
Plate tectonic theory: Explains how the lithosphere is divided into tectonic plates that constantly move, driving crustal evolution.AQA
Plucking: An erosional process where meltwater freezes into joints in the bedrock, pulling away rock fragments as the glacier advances.Pearson Edexcel
Polar: A cold environment determined by high latitude.AQA
Pollution reduction policies: Measures that mitigate poor urban air quality and health risks, assessed by weighing economic costs against environmental benefits.AQA
Population density: The number of people per unit area, typically measured in people per km².AQA
Population distribution: The spatial spread of people, described in patterns such as clustered or linear.AQA
Population dynamics: Population numbers and density, which climatic favourability supports or limits, as in densely populated South Asia or sparsely populated tundra regions.AQA
Population growth: A continuing increase in human numbers that, together with economic development, intensifies demand for resources and places pressure on ecosystems.AQA
Population Momentum: The tendency for population growth to continue beyond the time that replacement-level fertility has been achieved because of the high concentration of people…Pearson Edexcel
Population parameters: Distribution, density, numbers and change, which are affected by environmental factors.AQA
Population structure: Age–sex composition, visualised via population pyramids, which reveals dependency ratios.AQA
Pore Water Pressure: The pressure exerted by water within the gaps between soil or rock particles, which reduces internal friction and triggers mass movement.Pearson Edexcel
Positive budget: A surplus created when inputs exceed outputs, leading to coastal accretion and the formation of depositional landforms like beaches.AQA
Positive feedback: In the PRP model, a process that amplifies changes, as when population growth drives resource extraction, increasing pollution and degrading resources.AQA
Post-industrial: A stage of economic development where the service and knowledge sectors generate more wealth than the manufacturing sector.Pearson Edexcel
Post-industrial economy: An economy where the service sector provides more wealth than the manufacturing sector.Eduqas
Post-modernism: More than an architectural style, it encompasses the economic shift towards services and the fragmentation of urban social structures.AQA
Post-Productivism: The transition of rural areas from primary sector dominance (agriculture/mining) to a consumption-based economy focused on tourism, recreation, and…Pearson Edexcel
Predictability: Spatial locations are known, but exact temporal predictions remain impossible.AQA
Prediction and Forecasting: Evaluation of the technological capabilities and limitations in identifying precursor signals for volcanic eruptions versus the stochastic nature of…Pearson Edexcel
Preparedness: Risk management designed to reduce the impacts of the hazard through measures such as early warning systems and evacuation drills.AQA
Pressure and Release (PAR) Model: A conceptual framework used to analyze how root causes, dynamic pressures, and unsafe conditions combine with a hazard to create a disaster.Pearson Edexcel
Pressure melting point: The temperature at which ice melts, which decreases as overlying pressure increases.AQA
Prevention: Risk management designed to reduce the impacts of the hazard, such as land-use zoning to avoid fault lines.AQA
Primary data: Data that is collected firsthand rather than taken from existing sources.AQA
Primary data collection: Techniques such as questionnaires and interviews used to investigate human geography topics, such as perceptions of place.AQA
Primary energy: Energy sources extracted directly from nature, such as raw coal or wind.AQA
Process-Form Relationships: The systematic link between specific depositional mechanisms—such as subglacial lodgement, supraglacial melt-out, and fluvioglacial transport—and the…Pearson Edexcel
Process-Response Systems: The functional relationship between energy inputs (waves, tides, currents) and the resulting morphological changes in coastal landforms.Pearson Edexcel
Proportional divided circles: Extend pie charts by scaling the circle's total area to represent the absolute total value, allowing spatial comparison across maps.AQA
Public health policy: Management and mitigation strategies include lifestyle education campaigns and taxation on sugary foods.AQA
Pyroclastic Flow: A high-velocity, superheated current of gas and tephra reaching speeds of over 100km/h, typical of explosive eruptions.Pearson Edexcel

Q

Qualitative data: Primary data gathered through interviews, offering deep insights into people's lived experiences or perceptions of issues like urban regeneration.AQA
Qualitative methods: Interviews employ open-ended questions in a structured or semi-structured format to gather rich insights into personal experiences.AQA
Qualitative vs Quantitative data: Qualitative representations frequently contradict formal, statistical depictions, while census data provides statistical facts that lack the emotional and…AQA
Quantitative data: Numerical data, like river velocity in m s⁻¹, that offers different insights from non-numerical information.AQA
Quaternary sector: The knowledge-based part of the economy, including information technology, research and development, and financial planning.Eduqas

R

Range: The maximum value minus the minimum value, so it is quick but strongly affected by extreme values.AQA
Re-imaging: The deliberate use of marketing, public relations, and media campaigns to alter the external perception of a location, often dissociating it from negative…Pearson Edexcel
Rebranding: The holistic process of redefining a place's identity through physical, social, and economic changes to improve its marketability to external investors.Pearson Edexcel
Refugees: People forced to flee due to fear of persecution.AQA
Regeneration: The physical redevelopment of urban or rural fabric, often led by public-private partnerships, designed to trigger the cumulative causation of economic growth.Pearson Edexcel
Regional Devolution: The transfer of fiscal and administrative powers to Combined Authorities (e.g., Greater Manchester) to allow for 'bottom-up' regeneration strategies tailored…Pearson Edexcel
Relict landscapes: Landforms in currently temperate regions that were shaped by historical Pleistocene glaciations.AQA
Remotely sensed data: Information about the Earth's surface gathered from a distance, typically using satellites, aircraft, or drones.AQA
Renewable sources: Wind, solar and hydroelectric power, whose development provides sustainable, long-term energy security.AQA
Replacement Level Fertility: The total fertility rate—the average number of children born per woman—at which a population exactly replaces itself from one generation to the next,…Pearson Edexcel
Representation: How places may be represented in a variety of different forms, such as advertising copy, tourist agency material and local art exhibitions in diverse media.AQA
Reserves: Economically viable deposits, which are distinguished from broader resources that are only potentially viable.AQA
Residence Time: The average duration that a water molecule spends in a particular store, such as the atmosphere (approx.Pearson Edexcel
Resilience: The capacity built through enhanced mitigation strategies to withstand future, increasingly severe fire seasons.AQA, Pearson Edexcel
Resilience and the Disaster Cycle: Examination of the temporal stages of disaster management: mitigation, preparation, response, and recovery.Pearson Edexcel
Resource classification: Resources are classified as stock, which are non-renewable and finite, or flow, which are renewable and continuous.AQA
Resource evaluation: Evaluating stock resources involves categorising them by geological certainty, from measured reserves to possible resources.AQA
Resource Frontier: A geographic area where resources are being exploited for the first time, often involving high risk and environmental sensitivity, such as the Arctic or…Pearson Edexcel
Resource frontiers: As accessible resources deplete, extraction moves to remote or challenging areas such as the Arctic.AQA
Resource insecurity: A consequence of the spatial mismatch between resource supply and demand, which drives global trade movements.AQA
Resource Insecurity and Conflict: The nexus between cycle degradation, diminished agricultural yields, and the resulting potential for migration, civil unrest, and transboundary water disputes.Pearson Edexcel
Resource Security and Environmental Impact: The tension between rapid GDP growth and environmental sustainability, focusing on carbon emissions, resource depletion in the 'Global South', and the impact…Pearson Edexcel
Resource Security and Hegemony: The drive for energy and mineral security as a catalyst for environmental degradation in peripheral regions, often facilitated by superpower-led Foreign…Pearson Edexcel
Resources: The total known amount of a deposit, regardless of current economic viability, including potentially viable sources such as deep-sea nodules.AQA
Retrofitting: The process of strengthening existing structures to make them more resistant to seismic activity through the addition of braces or dampers.Pearson Edexcel
Rias: Drowned river valleys with dendritic patterns.AQA
Ridge push: Gravitational sliding as lithosphere slides away from elevated mid-ocean ridges.AQA
Risk management: Designed to reduce the impacts of the hazard through preparedness, mitigation, prevention and adaptation.AQA
Risk Management and Mitigation Strategies: Evaluation of the efficacy of hard engineering versus soft engineering and managed retreat in the context of increasing flood frequency and coastal squeeze.Pearson Edexcel
Risk sharing: A characteristic human response to hazards, listed alongside fatalism, prediction, adjustment, adaptation, mitigation and management.AQA
Roches moutonnées: Features that develop as ice abrades the stoss side and plucks the lee side of resistant rock.AQA
Rotational Slip: The curved movement of ice within a cirque, which concentrates erosion at the base and backwall, leading to overdeepening.Pearson Edexcel
Runoff: Infrequent overland flow that supplies immense kinetic energy during episodic flash floods, rapidly channelling into wadis.AQA
Rural Gentrification: The influx of affluent middle-class populations into rural settlements, leading to the displacement of low-income locals and the inflation of property values.Pearson Edexcel
Rural-Urban Continuum: The unbroken transition from sparsely populated, remote rural places to densely populated, central urban places.Pearson Edexcel

S

Saltation: A mode of aeolian transportation in which sand grains bounce along the ground.AQA
Sampling strategies: Qualitative sampling, such as purposive sampling, targets specific groups but often lacks statistical representativeness.AQA
Sand dunes: Form onshore as wind blows dry sand inland, trapped by obstacles and stabilised by vegetation like marram grass.AQA
Sandur: A vast outwash plain formed by the deposition of sediment from braided meltwater streams in front of a glacier.Pearson Edexcel
Scale: A property of atlas maps, which are small-scale representations of large areas such as countries or continents, and which must be checked as atlas maps vary…AQA
Scale and spatial interactions: Interactions between the local, regional, national, international and global scales are fundamental to understanding global governance, as top-down policies…AQA
Scatter graphs: Graphs that plot paired numerical data to investigate the correlation between two continuous variables, with each point representing a single observation on…AQA
Sea-level rise: A global eustatic rise of approximately 3.4 mm per year, driven primarily by thermal expansion of oceans and the melting of terrestrial ice sheets.AQA
Search for mineral resources: Although currently banned by the Madrid Protocol, the future search for mineral resources like coal and oil poses a catastrophic risk of habitat destruction…AQA
Secessionism: The action of withdrawing formally from membership of a federation or body, especially a political state.Pearson Edexcel
Secondary data: Data that uses existing sources, such as census records, rather than being collected firsthand.AQA
Secondary energy: Energy derived from transforming primary sources, with electricity and refined petrol being prime examples.AQA
Sectoral Evolution and Structural Change: The systematic shift of labor and capital from primary extraction to secondary manufacturing, and subsequently to tertiary and quaternary services, driven by…Pearson Edexcel
Sediment budget: The balance between sediment inputs, stores such as sand dunes or alluvial fans, and outputs such as dust storms exporting material.AQA
Sediment Budgets and Cells: The quantification of sediment inputs, transfers, and outputs within a closed or semi-closed system, determining the net growth or erosion of the coastline.Pearson Edexcel
Sediment cell: A largely self-contained stretch of coastline where sediment circulates, with distinct boundaries typically defined by major headlands or estuaries.AQA
Sediment sorting and stratification: Deposition of stratified, sorted, and rounded sediments forms distinct fluvioglacial landforms, contrasting with unsorted glacial till.AQA
Seismic hazard: Forms include earthquakes, shockwaves, tsunamis, liquefaction and landslides, driven by stress accumulation at plate boundaries releasing energy.AQA
Sense of place: The subjective emotional attachment people develop to a place.AQA
Sheet flooding: Unconfined overland flow that strips topsoil and deposits sediment across broad areas when heavy rain falls on baked, impermeable surfaces.AQA
Shifting economic power: A change in the global economic architecture as emerging markets become both significant recipients and outward investors.AQA
Shoreline Management Plans (SMPs): The application of the littoral cell concept to divide the coastline into manageable units, applying policies like 'Hold the Line', 'Managed Realignment', or…Pearson Edexcel
Short-term responses: Mass evacuations and emergency firefighting efforts carried out during a wildfire event.AQA
Significant figures: A way of presenting final calculated values, applied appropriately alongside conversion between units.AQA
Simple bar graph: A graph showing a single variable using rectangular bars whose length is proportional to value.AQA
Simple line graphs: Plot a single variable, such as annual rainfall.AQA
Sketch maps: Simplified drawings that capture essential geographical features while omitting unnecessary background detail.AQA
Slab pull: At destructive margins, the dense, subducting oceanic plate pulls the rest of the plate behind it, a dominant driving force.AQA
Smart Power: The strategic combination of hard power and soft power resources to achieve foreign policy goals.Pearson Edexcel
Social Clustering: The tendency for people with similar characteristics (e.g., ethnicity, income) to live in the same neighbourhoods.Pearson Edexcel
Social Inequality and Spatial Segregation: Investigation into the drivers of residential segregation, including income disparity, ethnicity, and the impact of gentrification on community cohesion and…Pearson Edexcel
Social Polarisation: The widening gap between high-skilled workers in the 'quaternary' sector and low-skilled workers displaced by automation and outsourcing, leading to political…Pearson Edexcel
Social Polarization and Gentrification: The influx of affluent in-migrants and second-home owners creates a 'dual economy' in rural areas.Pearson Edexcel
Social segregation: Different socio-economic or ethnic groups clustering in distinct neighbourhoods, driven by housing markets or by cultural diversity and community support.AQA
Socio-Cultural Integration: The tension between cultural hybridity and the formation of ethnic enclaves, leading to debates over national identity and social cohesion.Pearson Edexcel
Socio-economic and Environmental Conflict: The tension between protecting high-value economic assets and the ecological necessity of allowing natural processes to occur.Pearson Edexcel
Socio-economic Deprivation: Analysis of structural inequalities including persistent unemployment, low educational attainment, and health disparities as primary drivers for intervention.Pearson Edexcel
Socio-economic determinants of health: Urbanisation and poverty limit access to nutritious food, linking the socio-economic environment to coronary heart disease.AQA
Socio-Economic Disparity and Place: Evaluation of the correlation between ethnic diversity and the Index of Multiple Deprivation (IMD), focusing on housing quality, employment access, and…Pearson Edexcel
Socio-Economic Displacement: The consequences of land loss on community cohesion, property equity, and the psychological impact of 'environmental refugees' in developed and developing…Pearson Edexcel
Socio-economic inequalities in health: Poor sanitation and inadequate healthcare exacerbate transmission of the disease.AQA
Socio-Economic Inequality: The role of the 'core-periphery' model in fostering disunity, where regional economic neglect leads to political alienation and calls for secession.Pearson Edexcel
Socio-economic Inequality and Marginalization: Investigation into how deprivation, as measured by the Index of Multiple Deprivation (IMD), limits life chances and restricts the ability of residents to…Pearson Edexcel
Socio-Economic Inequality and the Global Shift: Analysis of the spatial redistribution of industrial activity from the Global North to the Global South, leading to structural unemployment in post-industrial…Pearson Edexcel
Socio-Economic Polarisation: The widening disparity in wealth and opportunity both between nations and within individual states, often measured via the Gini Coefficient.Pearson Edexcel
Socio-Economic Rights and Poverty: Evaluation of the right to education, healthcare, and clean water as fundamental drivers of human capital; assessment of how regional disparities in service…Pearson Edexcel
Socio-Economic Stratification of Access: The disparity in water security based on economic status.Pearson Edexcel
Socio-Economic Vulnerability: The intersection of physical water scarcity with human demand, infrastructure limitations, and transboundary water governance.Pearson Edexcel
Socio-Political Friction and Border Governance: The tension between the 'borderless' requirements of global capital and the restrictive immigration policies of nation-states seeking to protect national…Pearson Edexcel
Socio-political power dynamics: The way data is studied and represented can reinforce power imbalances or marginalise groups, and power dynamics are involved in data ownership and who…AQA
Socio-Political Tension and Policy: The conflict between the economic necessity for labor and the political pressures of border control, national identity, and the social integration of migrant…Pearson Edexcel
Soft Power: The ability to influence the behavior of other states through cultural attraction, political values, and foreign policies rather than coercion.Pearson Edexcel
Soil moisture budget: The balance of water inputs and outputs in the soil, which drives both floral and faunal adaptations.AQA
Soil profiles and horizons: The layers shaped by climate and vegetation that make up a soil, as shown by zonal soils such as Podzols and Chernozems.AQA
Solifluction: A key mass movement where the waterlogged active layer slowly flows downslope under gravity, creating features like solifluction lobes.AQA
Sources of water: Include surface water such as rivers and lakes, groundwater such as aquifers, and non-conventional sources like desalinated seawater or recycled wastewater.AQA
Sovereignty: The principle of absolute and independent authority over a territory.Pearson Edexcel
Sovereignty and Geopolitical Conflict: The extension of state power through the 200 nautical mile EEZ limit and the resulting disputes over overlapping claims and maritime chokepoints.Eduqas
Sovereignty and the Nation-State: The inherent tension between Article 2(7) of the UN Charter, which protects state domestic jurisdiction, and the evolving 'Responsibility to Protect' (R2P)…Pearson Edexcel
Sovereignty and the Responsibility to Protect (R2P): The geographical and legal challenge of enforcing international standards within sovereign borders, specifically when state actions necessitate external…Pearson Edexcel
Sovereignty vs. Interventionism: The legal and ethical conflict between the absolute right of a state to self-govern and the international community's mandate to prevent mass atrocities,…Pearson Edexcel
Sovereignty vs. Supranationalism: The geographical tension between the Westphalian state model and the increasing authority of organisations like the EU or WTO to override national legislation.Pearson Edexcel
Sovereignty vs. Universalism: The fundamental conflict between a state's right to non-interference and the international community's obligation to uphold universal human rights standards…Pearson Edexcel
Spatial Analysis: Analytical approaches such as overlay analysis, proximity analysis (buffering) and spatial interpolation used to interpret spatial relationships.AQA
Spatial and attribute data: Spatial data is the location, while attribute data is the descriptive information about that location, and both are required for GIS to function effectively.AQA
Spatial and temporal scales: Flows and transfers operate at plant, sere and continental scales, changing the magnitude of stores over time and space.AQA, Pearson Edexcel
Spatial correlations: Relationships identified by overlaying datasets, such as census deprivation data onto urban land-use maps to evaluate socio-economic inequalities.AQA
Spatial distribution: The geographical range and seasonal incidence of vector-borne diseases, controlled by climatic factors such as temperature, precipitation and humidity.AQA
Spatial distribution of biomes: Global atmospheric pressure belts determine where hot deserts are distributed, as high-pressure zones inhibit condensation and precipitation.AQA
Spatial Inequality and the Development Gap: The persistent disparities in economic performance and quality of life between core and peripheral regions, influenced by historical, political, and…Pearson Edexcel
Spatial interaction: The movement of people, goods, or information, whose scale can be assessed by analysing maps showing movement.AQA
Spatial mismatch: The uneven pattern in which resource availability and demand occur in different places, driving global trade movements and potentially leading to resource…AQA
Spatial patterns: How geographical phenomena are distributed across an area, as shown by maps such as choropleth, isoline and dot maps.AQA
Spatial patterns of land use: Patterns that vary significantly in contrasting settings and are influenced by factors such as housing markets and urban planning policies.AQA
Spatial scales of impact: The local and global scales at which profound environmental impacts are generated by developing major energy resources and their associated distribution…AQA
Spatial Segregation and Integration: Analysis of the physical separation of population groups based on ethnicity, socio-economic status, or religion, and the policy mechanisms used to promote…Pearson Edexcel
Spearman’s rank correlation: Measures the strength and direction of a monotonic association between paired ranked observations, entered with n, the number of valid pairs, to select the…AQA
Special Economic Zone (SEZ): An area in which business and trade laws are different from the rest of the country to attract foreign investment.Pearson Edexcel
Speed of Onset: The time lag between the start of a hazard event and its peak intensity; tectonic hazards typically have a rapid onset.Pearson Edexcel
Stakeholder conflict: The conflicting interests of different stakeholders, such as local residents versus environmental conservationists, that must be weighed up when discussing…AQA
Stakeholder Conflict and Resolution: The management of competing interests between groups such as local residents, environmentalists, commercial developers, and government agencies within the…Pearson Edexcel
Stakeholders: Individuals, groups, or organisations that have an interest in, or are affected by, a regeneration project.Pearson Edexcel
Standard deviation: The square root of the mean squared deviation from the mean, using every observation and useful with the mean, though extreme values can influence it.AQA
Statistical analysis: Using software functions to perform complex statistical calculations, such as computing Spearman's rank correlation coefficient or standard deviation,…AQA
Statistical significance: A result is significant when the null hypothesis is rejected; otherwise there is insufficient evidence to reject it, and association does not by itself prove…AQA
Stores: Interception, surface, soil water, groundwater and channel storage, between which movement occurs via flows.AQA
Structural Alignment: The orientation of strata relative to the coastline.Pearson Edexcel
Sub-aerial weathering: Weathering and mass movement that work alongside marine erosion to shape cliff profiles, and which with gravity eventually cause an arch roof to collapse.AQA
Sub-climax: A stage where development is temporarily arrested by local factors like waterlogging or poor soil before reaching the climatic climax.AQA
Subaerial Processes: Land-based processes including weathering and mass movement that operate on the cliff face, contributing to coastal recession.Pearson Edexcel
Subduction: The process where a denser oceanic plate is forced underneath a less dense continental plate at a destructive boundary.Pearson Edexcel
Subdued hydrograph: A hydrograph with a longer lag time and lower peak, typical of forested catchments where interception and infiltration reduce rapid surface runoff.AQA
Subjectivity vs Objectivity: The tension between subjective images created by media and art and the objective realities presented by formal statistical data.AQA
Suburbanisation: The phase of the urban cycle in which populations decentralise through the outward growth of a city into its fringes.AQA
Succession: The sequence of stages through which vegetation develops, ending in the final, stable stage in equilibrium with the regional climate.AQA
Superpower: A nation with the ability to project its influence anywhere in the world and be a dominant global force.Pearson Edexcel
Supranationalism: The process where nation-states cede specific powers to higher-level international organizations, such as the EU or UN, to achieve collective economic or…Pearson Edexcel
Suspension: A mode of aeolian transportation in which fine dust is carried high in the air over long distances.AQA
Sustainability: The long-term viability and resilience of ecosystems, which human populations can promote through active management, conservation strategies and restoration…AQA
Sustainability and conservation: Balancing economic progress with environmental stewardship so that future generations can achieve sustainable development.AQA
Sustainability and IWRM: The implementation of Integrated Water Resource Management to balance social, economic, and environmental needs without compromising future supply.Pearson Edexcel
Sustainability and Post-Development Theory: The critique of Western-centric development models, emphasizing environmental planetary boundaries and alternative paradigms such as Gross National Happiness…Pearson Edexcel
Sustainability and resilience: Alternative futures for local populations through sustainable land management, mitigation and adaptation strategies such as agroforestry and water…AQA, Pearson Edexcel
Sustainable cities: Cities featuring renewable energy, efficient public transport, and green spaces.AQA
Sustainable Development and Environmental Stewardship: The integration of ecological limits into development targets, moving beyond GDP to include environmental and social metrics in measuring national progress.Pearson Edexcel
Sustainable Development Paradigms: The integration of economic growth with environmental preservation, specifically how IGOs operationalize the Sustainable Development Goals (SDGs) through…Pearson Edexcel
Sustainable Development vs. Exploitation: The conflict between the economic potential of glaciated regions (mineral wealth, tourism) and the necessity of preserving ecosystem services and carbon sinks.Pearson Edexcel
Symbiosis: The relationship between coral polyps and zooxanthellae algae, in which the polyps host the photosynthetic algae.AQA
Synoptic charts: Charts that use standard symbols to represent atmospheric pressure, wind speed and direction, cloud cover, and frontal systems.AQA
System equilibrium: The natural balance of the drainage basin system, which water abstraction fundamentally disrupts.AQA
System flows and transfers: Photosynthesis, respiration, decomposition, combustion, carbon sequestration in oceans and sediments, and weathering move carbon between stores.AQA
System structure: The arrangement comprises interacting biotic communities and abiotic factors, with energy transferred through distinct trophic levels from primary consumers…AQA
Systems and cycles: The carbon cycle, which fluctuates over time through natural and anthropogenic drivers.AQA
Systems concepts: Ideas applied to glaciated landscapes covering inputs, outputs, energy, stores or components, flows or transfers, positive and negative feedback, and dynamic…AQA
Systems theory: Application of systems concepts to ecosystems, involving inputs, outputs, stores and transfers of energy and materials.AQA
Systems theory in physical geography: Systems concepts and their application to the development of desert landscapes, involving inputs, outputs, energy, stores/components and flows/transfers.AQA

T

Technological Hegemony: The attempt by existing superpowers to maintain dominance through R&D, intellectual property rights, and the control of high-tech supply chains (e.g.,…Pearson Edexcel
Technological innovation: Human innovation, such as genetically modified crops or renewable energy, which Boserupian views suggest will overcome environmental limits and allow…AQA
Tectonic changes: Localised land movements from faulting or volcanic activity, altering relative sea levels.AQA
Tectonic Forcing: The role of plate boundaries in subducting carbon-rich sediments into the mantle and the subsequent release of CO2 via volcanic arcs and mid-ocean ridges.Pearson Edexcel
Temporal variations: Changes in the water cycle over time, including natural variation such as storm events and seasonal changes, and human impact.AQA
Tephra: A primary volcanic hazard produced by explosive eruptions, alongside pyroclastic and ash fallout.AQA
Terrestrial Carbon Storage: The role of forests, grasslands, and soils in sequestering carbon, influenced by environmental variables such as temperature, moisture, and nutrient…Pearson Edexcel
Territoriality: The strategy used by states to exercise control over a geographic area.Pearson Edexcel
Territoriality and Sovereignty: The assertion of control over a defined geographic space to validate political authority and cultural exclusivity.Pearson Edexcel
The 'Full Belly' Thesis: The prioritization of economic and social rights (food, shelter, health) over civil and political rights (speech, assembly) in developing nations as a…Pearson Edexcel
The Disaster Gap: The widening disparity in mortality and economic loss between HICs and LICs/NEEs.Pearson Edexcel
The Global Shift: The relocation of secondary sector manufacturing from the Global North to the Global South, driven by comparative advantage, lower labor costs, and TNC profit…Pearson Edexcel
The Hazard-Disaster Nexus: Evaluation of the Degg Model (Risk = Hazard x Vulnerability).Pearson Edexcel
The Impact of Regeneration and Gentrification: Evaluation of how physical and economic restructuring alters the 'genius loci' of a place, often leading to the displacement of long-term residents and the…Pearson Edexcel
The Marine Biological Pump: The transfer of organic carbon from the ocean surface to the deep ocean through the sinking of dead organisms and fecal matter, effectively removing carbon…Pearson Edexcel
The Multidimensionality of Development: The shift from purely economic measures (GDP/GNI) to composite indices like the Human Development Index (HDI) which incorporate life expectancy and mean years…Pearson Edexcel
The North-South Divide and its Evolution: The transition from the simplistic Brandt Line model to a complex global landscape featuring Emerging Economies (BRICS) and the persistence of the Least…Pearson Edexcel
The Resource Curse (Paradox of Plenty): The correlation between fossil fuel abundance and stunted democratic development or economic volatility in LICs and NEEs, where export dependency creates…Pearson Edexcel
The Responsibility to Protect (R2P): The 2005 UN commitment establishing that sovereignty entails responsibility; when a state fails to protect its population from mass atrocities, the…Pearson Edexcel
The Rural Idyll: A socio-cultural construct perceiving the countryside as a problem-free, pastoral space, which often masks issues of rural poverty and social exclusion.Pearson Edexcel
The tragedy of the commons: The depletion of a shared resource by individuals acting in their own self-interest, where shared resources are overexploited.AQA
The Water-Food-Energy Nexus: The inextricable link between water availability, food security, and energy production.Pearson Edexcel
The Westphalian State System vs. Globalisation: The conflict between traditional fixed borders and the supra-national flows of capital, people, and information that challenge national identity.Pearson Edexcel
Thermal fracture: Occurs when rocks rapidly expand during hot days and contract at night, creating stress.AQA
Thermal regimes: Glaciers are classified by this into warm-based (temperate) and cold-based (polar) types, with polythermal glaciers exhibiting characteristics of both.AQA
Throughflow: The lateral movement of water through the unsaturated zone (soil) towards the river channel, occurring slower than overland flow.Pearson Edexcel
Tides: Movements driven by gravitational pull that dictate the range of wave action and generate tidal currents in estuaries.AQA
Tied Aid: Foreign aid that must be spent in the country providing the aid (the donor country) or in a group of selected countries.Pearson Edexcel
Till plains: Form when a large ice sheet retreats, depositing a vast, flat layer of basal till.AQA
Time-Space Compression: A concept explaining how globalisation is making geographically far places feel culturally nearer.AQA, Pearson Edexcel
Timescales of change: The contrast between natural variations and the rapid pace of recent human impacts on the carbon cycle.AQA
Tipping Points: The identification of critical thresholds in the Earth system beyond which carbon release becomes self-sustaining and potentially irreversible.Pearson Edexcel
Topographic influences: Relief creates rain shadows, where orographic uplift causes precipitation on the windward side and descending, warming air leaves the leeward side dry.AQA
Topography: A physical endogenous factor, alongside location, that helps shape the internal character of a place.AQA
Topophilia: A strong love of place, generated by shared experiences, that anchors human experience and memory.AQA
Tourism and scientific research: The expansion of ship-based tourism and the infrastructure required for scientific research introduce invasive species, disturb breeding wildlife, and…AQA
Trade and investment: International flows whose volume and pattern have been profoundly transformed by globalisation.AQA
Trade inequalities: The vast majority of the profit being retained by retailers and TNCs in the consuming countries rather than by primary producers.AQA
Trade Liberalisation: The systematic removal of tariff and non-tariff barriers through multilateral agreements to increase the volume and velocity of global trade flows.Pearson Edexcel
Trade Liberalization: The systematic reduction of tariff and non-tariff barriers through GATT and subsequently the WTO to increase global trade volumes and interdependence.Pearson Edexcel
Transboundary issues: Challenges such as climate change, where greenhouse gas emissions from industrialised nations cause sea-level rises affecting low-lying states, requiring…AQA
Transboundary nature of air pollution: Atmospheric pollution easily crosses municipal boundaries, complicating local enforcement and requiring coordinated national strategies.AQA
Transboundary water conflicts: International disputes involving sovereign nations sharing rivers or aquifers, where upstream dam construction or water diversion threatens downstream water…AQA
Transboundary Water Governance: The geopolitical tensions arising from shared water resources.Pearson Edexcel
Transnational Corporation (TNC): A company that operates in more than one country, often with headquarters in an MEDC and manufacturing in LEDCs.Pearson Edexcel
Transnational corporations: Forces whose decisions can relocate manufacturing globally, triggering local deindustrialisation and severe economic decline, and which possess financial power.AQA
Transport strategies: These often focus on reducing reliance on private vehicles through integrated public transit systems and promoting active travel via dedicated cycling…AQA
Trip lines: Lines that specifically map regular, purposeful journeys, such as commuting from suburbs to a city centre or travel to a retail park.AQA
Tsunami Warning System (TWS): A network of DART buoys and communication links used to detect seismic waves and sea-level changes to alert coastal populations.Pearson Edexcel

U

Unconsolidated: Sediment that has not been cemented into solid rock, such as glacial till or alluvium, typically exhibiting high recession rates.Pearson Edexcel
Underpopulation: Means insufficient people to fully exploit available resources.AQA
Unequal flows: Trade patterns in which less developed economies export low-value primary commodities while importing expensive manufactured goods, perpetuating a trade…AQA
Unipolarity: A distribution of power in which one state exercises most of the cultural, economic, and military influence globally.Pearson Edexcel
Unit conversions: Accurately changing between standard units, such as scaling up from square metres to hectares or square kilometres.AQA
Universalism vs. Cultural Relativism: The conflict between the Western-centric liberal view that rights are inherent and universal, and the argument that rights are socially constructed and must…Pearson Edexcel
Urban canyons: Channel winds to increase localised speed and alter direction, though overall surface roughness reduces average wind speed.AQA
Urban decline: Linked to dereliction through economic restructuring and deindustrialisation.AQA
Urban governance: Strong urban governance and community engagement are required for effective implementation to ensure strategies are socially inclusive.AQA
Urban growth: The absolute increase in physical size or population of an urban area, driven by interconnected processes.AQA
Urban heat island effect: Makes cities warmer due to low albedo surfaces absorbing insolation and anthropogenic heat.AQA
Urban Morphology and Ethnic Enclaves: Investigation into the formation of distinct cultural quarters and the impact of 'white flight' versus 'ethnic clustering' on the physical and social fabric…Pearson Edexcel
Urban Morphology and Land Use: Analysis of the spatial structure of cities, evaluating the transition from traditional concentric and sector models to the fragmented, polycentric forms of…Pearson Edexcel
Urban regeneration: Strategies such as town centre mixed developments and cultural or heritage quarters that blend spaces or use arts and history to attract investment and…AQA
Urban regeneration and gentrification: Present processes of development that introduce new economic activities and alter social demographics, adding to the combined layers of development in a place.AQA
Urban resurgence: The phase of the urban cycle driven by inner-city regeneration, in which deindustrialised areas attract new investment and populations.AQA
Urban Segregation and Social Exclusion: Investigation into the spatial clustering of socio-economic groups within urban environments, leading to the formation of 'dual cities' where extreme wealth…Pearson Edexcel
Urban water cycle: Water movement through urban catchments as measured by hydrographs, dominated by rapid surface runoff rather than slow subsurface flows.AQA
Urbanisation: The initial phase of the urban cycle, in which populations concentrate in cities and which profoundly shapes human affairs by driving economic growth and…AQA
Urbanisation and Megacity Growth: Examination of the push-pull factors driving rural-to-urban migration and the resulting challenges in infrastructure and sustainability.Pearson Edexcel

V

Varve: An annual layer of sediment found in proglacial lakes, consisting of a light-colored summer layer (coarse) and a dark-colored winter layer (fine).Pearson Edexcel
Vector ecology and climate: Physical environmental variables, such as temperatures between 15°C and 32°C, accelerate vector lifecycles, and seasonal rainfall provides breeding grounds…AQA
Virtual Water: The hidden volume of freshwater used to produce commodities, which can be 'exported' or 'imported' through global trade.Pearson Edexcel
Virtual water trade: The hidden flow of water when food or commodities are traded, allowing water-scarce nations to import water-intensive goods.AQA
Vulcanicity: Characteristic process at constructive and destructive margins, absent at conservative margins because no magma is generated or released.AQA
Vulnerability: The characteristics and circumstances of a community, system, or asset that make it susceptible to the damaging effects of a hazard.Pearson Edexcel
Vulnerability and Governance: Analysis of how political stability, corruption, and economic development dictate the 'Pressure' side of the PAR model.Pearson Edexcel
Vulnerability and Resilience: Analysis of how socio-economic factors, governance, and infrastructure determine the capacity of a population to withstand and recover from tectonic events.Pearson Edexcel

W

Warm-based glaciers: These develop in high-altitude temperate regions like the Alps, with basal temperature at or above the pressure melting point, allowing basal sliding and…AQA
Waste Hierarchy: A framework for managing waste sustainably, prioritizing reduction, then reuse, and finally recycling.Pearson Edexcel
Waste management strategies: These emphasise the circular economy, moving away from landfill towards comprehensive recycling and energy recovery facilities.AQA
Water balance: A concept that accounts for changes in storage, meaning inputs do not always immediately equal outputs, and that explains seasonal variations in soil moisture…AQA, Pearson Edexcel
Water Budget: The annual balance between precipitation (input) and potential evapotranspiration (output).Pearson Edexcel
Water conflicts: Disputes over access, allocation, and quality that arise when demand exceeds supply across local, national, and international scales.AQA
Water pollution: Arises from inadequate sanitation and industrial effluent contaminating urban watercourses.AQA
Water Security and Geopolitics: The role of water as a strategic resource, focusing on transboundary drainage basins and the potential for conflict or cooperation (hydro-politics).Pearson Edexcel
Water stress: Occurs when demand exceeds the available supply, or poor quality restricts use, with annual water supplies dropping below 1700 m³ per person.AQA, Pearson Edexcel
Water transfers: Moving water on a larger scale from basins with a surplus to those with a deficit.AQA
Westernisation: The global spread and adoption of Western (primarily American and European) culture, values, and lifestyle.Pearson Edexcel
World cities: Global economic hubs like London or Tokyo, exhibiting distinct contemporary characteristics including hyper-connectivity and extreme density.AQA

X

Xerophytic adaptations: Traits such as rolled leaves developed by flora in dune systems with highly permeable soils and a low soil moisture budget.AQA

Y

Yardangs: Parallel ridges carved by abrasion into soft rock of vertical strata aligned with the wind.AQA

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