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Physics
Pressure = force normal to a surface / area of that surface
AQAGCSE
8463
Physics
Pressure in a fluid 1: pressure, p, in pascals, Pa
AQAGCSE
8463
Physics
Students should be able to recall and apply this equation.
AQAGCSE
8463
Physics
The pressure at the surface of a fluid can be calculated using the equation:
AQAGCSE
8463
Physics
The pressure in fluids causes a force normal (at right angles) to any…
AQAGCSE
8463
Physics
A partially (or totally) submerged object experiences a greater pressure…
AQAGCSE
8463
Physics
Students should be able to calculate the differences in pressure at…
AQAGCSE
8463
Physics
Students should be able to describe the factors which influence floating…
AQAGCSE
8463
Physics
The pressure due to a column of liquid can be calculated using the…
AQAGCSE
8463
Physics
Pressure in a fluid 2 (HT only): This creates a resultant force upwards.
AQAGCSE
8463
Physics
Pressure in a fluid 2 (HT only): This force is called the upthrust.
AQAGCSE
8463
Physics
A gas can be compressed or expanded by pressure changes. The pressure…
AQAGCSE
8463
Physics
For a fixed mass of gas held at a constant temperature: pressure × volume…
AQAGCSE
8463
Physics
Students should be able to use the particle model to explain how…
AQAGCSE
8463
Physics
Pressure in Liquids
OCRGCSE
Pressure in Liquids (OCR Topic 2.9) explores how the pressure exerted by a fluid increases with depth and acts equally in all directions, governed by the equation P = hρg. Mastery of this topic requires both confident numerical calculation — with precise unit handling — and the ability to explain the physical mechanism by which pressure differences at different depths give rise to upthrust, the force responsible for floating and sinking. This topic carries significant exam weight across both AO1 recall and AO2 application questions, making it essential for candidates targeting grades 4 through 9.
Physics
Pressure in Solids
OCRGCSE
Pressure in Solids (Topic 2.8) is a quantitative and qualitative topic that sits at the heart of OCR GCSE Physics, requiring candidates to apply the equation P = F/A to calculate pressure, perform unit conversions between cm² and m², and explain real-world mechanical systems using precise scientific language. Mastery of this topic is highly rewarding: the mark scheme is transparent, the formula is straightforward, and candidates who learn to avoid the three classic errors — wrong unit conversion, substituting mass instead of weight, and vague explanatory language — can consistently achieve full marks. From snowshoes to surgical scalpels, the physics of pressure underpins engineering, medicine, and everyday life, making it one of the most applicable topics on the specification.
Physics
Apply: for a given mass of gas at a constant temperature: pressure (Pa) ×…
OCRGCSE
J249
Physics
Apply: pressure due to a column of liquid (Pa) = height of column (m) ×…
OCRGCSE
J249
Physics
Calculate the differences in pressure at different depths in a liquid (to…
OCRGCSE
J249
Physics
Describe a simple model of the Earth’s atmosphere and of atmospheric…
OCRGCSE
J249
Physics
Describe the factors which influence floating and sinking (content found…
OCRGCSE
J249
Physics
Explain how doing work on a gas can increase its temperature (to include:…
OCRGCSE
J249
Physics
Explain how increasing the volume in which a gas is contained, at constant…
OCRGCSE
J249
Physics
Explain how the motion of the molecules in a gas is related both to its…
OCRGCSE
J249
Physics
Explain the relationship between the temperature of a gas and its pressure…
OCRGCSE
J249
Physics
Explain why atmospheric pressure varies with height above the surface of…
OCRGCSE
J249
Physics
Explain why pressure in a liquid varies with depth and density and how…
OCRGCSE
J249
Physics
Recall that gases can be compressed or expanded by pressure changes and…
OCRGCSE
J249
Economics B
A) Equilibrium price and quantity and how they are determined
Pearson EdexcelA-Level
9EB0
Economics B
B) The use of supply and demand diagrams to depict excess supply and…
Pearson EdexcelA-Level
9EB0
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