Topic 6: Investigating coastal change and conflict — Edexcel GCSE Geography B
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Topic 6: Investigating coastal change and conflict explained
Topic 6: Investigating coastal change and conflict covers 4 specification points, including Investigate the impact of coastal management… and Students must have an opportunity to develop….
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Open a point below for its explanation and revision guidance.
Investigate the impact of coastal management on coastal processes and communities.
Coastal management covers the strategies used to limit flooding and erosion, and each one changes shorelines and nearby people differently. Hard engineering, such as sea walls, rock armour and groynes, resists wave energy directly but can shift erosion to neighbouring coast. Soft options, including beach nourishment and dune restoration, work with natural sediment supply. Managed retreat and do-nothing policies allow land to change. To answer well, trace a chain of cause and effect: a strategy alters longshore drift, sediment budgets and erosion rates, which then affects flood risk, property, tourism and livelihoods. Anchor every claim to one named case study.
1. Formulating enquiry questions: Students must have an opportunity to develop understanding of the kinds of questions capable of being investigated through fieldwork in coastal environments. Students must have an opportunity to develop a question(s) based on their location and the task.
Strong coastal fieldwork begins with a question a short visit can answer using measurable evidence. Think about what you can count, time or measure on a beach, cliff or dune, such as beach gradient, clast size along a transect or wave height. Questions needing information unavailable at the site, such as national trends, are weaker. Fit the question to your chosen location and to the method you have been given, so the site and technique together shape what you ask. State the variable, the place and the comparison, for example how beach gradient differs between a groyne-protected stretch and an unprotected one. Finally, check that your data could actually answer it.
2. Selecting fieldwork methods: Fieldwork data collection must include at least: one quantitative fieldwork method to measure how coastal management has affected beach morphology and sediment characteristics; one qualitative fieldwork method to collect data on coastal management measures and their success.
The statement requires at least one quantitative and one qualitative fieldwork method. The quantitative method must measure how coastal management has affected beach morphology and sediment characteristics, producing numerical data for comparison, for example beach profiling for cross-shore gradient or sediment sampling for particle size. The qualitative method must collect data on coastal management measures and their success, gathering opinions or descriptions, for example questionnaires or interviews with residents and managers, or observation of sea walls and groynes. Use both methods at a managed and an unmanaged site so their evidence can be combined into one judgement about management effectiveness.
3. Secondary data sources: A geology map e.g. Geology of Britain viewer; One other source.
This statement requires a geology map, with the Geology of Britain viewer as an example, plus one other secondary source. Secondary data was collected by someone else, often for another purpose, so check its date, scale and origin. A geology map shows bedrock and superficial deposits, which helps explain erosion differences, such as soft clay cliffs eroding faster than hard limestone. The viewer, from the British Geological Survey, lets you zoom to your study area and identify rock types. The second source is unspecified, so choose one relevant to coastal change, such as an Ordnance Survey map of coastline shape. Use both sources to support your enquiry and state their limitations.
Your focus
- Describe how a hard engineering strategy changes longshore drift and sediment movement.
- Explain one soft engineering strategy's effect on beach sediment and erosion.
- Assess the impact of a named coastal management scheme on a community.
Show all 12 objectives
- Write a fieldwork enquiry question that names a measurable variable, a coastal location and a comparison.
- Identify questions that cannot be answered with data gathered during a site visit.
- Justify a chosen question by linking it to the site and the planned method.
- Select one quantitative method suited to measuring beach morphology and sediment characteristics
- Select one qualitative method suited to collecting data on coastal management measures and their success
- Explain how the two methods together answer one coastal management enquiry
- Identify the rock type at a study site using a geology map
- Explain how rock type influences erosion or cliff stability
- Justify the choice of a second secondary source for the enquiry
Topic 6: Investigating coastal change and conflict exam tips
Marking Points
- Explains how a named hard engineering strategy alters longshore drift and sediment movement.
- Evaluates whether a soft engineering strategy works with natural sediment supply, using a named example.
- Describes downdrift erosion or flooding caused by a structure that interrupts sediment transport.
- Links a management strategy to changes in property protection, tourism or the livelihoods of local people.
- Considers managed retreat as a strategy that displaces or reshapes communities.
- Identifies a question that can be answered using evidence gathered at the chosen coastal site.
- Links the question to the specific location studied, such as a named beach or cliff frontage.
- Matches the question to the fieldwork task set, so the chosen method can generate usable data.
- Specifies the variable and the comparison, such as sites with and without a groyne.
- Narrows the question enough to be tested rather than stating a broad topic.
- Measures beach morphology with a method that records numerical data, such as beach profiling for cross-shore gradient
- Collects sediment characteristics with a repeatable sampling method and records where each sample was taken
- Uses a qualitative method that gathers opinions or descriptions of coastal management measures and their success
- Links both methods to a managed and an unmanaged site so the comparison addresses the enquiry
- Explains how each chosen method answers the enquiry rather than simply listing it
- Identifies the bedrock or superficial deposits shown at the study site on a geology map
- Links rock type to likely coastal erosion or cliff stability with a stated reason
- Selects a second secondary source that is relevant to the coastal change enquiry
- States the origin, date or scale of each secondary source
- Evaluates the reliability or limitations of each source before using it
Examiner Tips
- 💡Build each paragraph as a chain: strategy, then process change, then community impact.
- 💡Name one specific case study with its location and use its evidence rather than generalities.
- 💡Investigate both benefits and drawbacks of a strategy, and do not present a list of strategies without linking them to outcomes.
- 💡Read the fieldwork brief before writing and note the location and method it specifies.
- 💡Draft two or three candidate questions, then reject any that cannot be answered with data from the site.
- 💡Check that each final question names a variable, a place and a comparison or trend.
- 💡Write beside each planned method the question it answers before you go into the field
- 💡Check that one method yields numbers and the other yields opinions or descriptions
- 💡Record sampling locations and site names so both methods can be compared directly
- 💡Note the date and scale of each source as you collect it
- 💡Use the geology viewer to identify the rock type at your exact study site, then write the link to erosion
- 💡Select the second source early and check that it covers your study area
Common Mistakes
- Describes a strategy without explaining its effect on processes; add the process change and its consequence.
- Treats all strategies as equally effective; compare how each works in its specific setting.
- Discusses only physical changes and ignores communities; include social and economic impacts on people.
- Writes a broad question about whether the coast matters; narrow it to one measurable variable.
- Asks about national or global trends that the site visit cannot measure; focus on what is observable at the location.
- Selects a question that ignores the method set for the task; check the question matches the equipment and data collection planned.
- Uses two quantitative methods and no qualitative method, which fails the requirement for both; add a qualitative method
- Records only beach profile data and omits sediment characteristics; include a method that addresses sediment as well
- Presents a questionnaire as a way of measuring beach morphology; a questionnaire gathers opinions, so match each method to the outcome it measures
- Collects opinions with no link to specific coastal management measures, so the data cannot judge their success; name the measures in each question
- Treats the geology map as showing only current beach sediment; geology maps show bedrock and superficial deposits, so describe both correctly
- Describes rock types without explaining how they affect erosion; add the link to erosion for each rock type
- Chooses a second source with no relevance to coastal change, such as a map of an unrelated area; select a source that addresses the enquiry
- Ignores the date or limitations of a secondary source, which weakens evaluation; state both for every source