Pressure

Definition

The force acting per unit area.

Used by AQA, Edexcel and OCR

Specification R1, R11 · Paper 1, Paper 2, Paper 3

Specification N13, R1, R11 · Paper 1, Paper 2, Paper 3

1
Use the context to check the direction of your answer: for a fixed force, a smaller area produces a greater pressure; for a fixed volume, greater mass produces greater density.

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Pressure conversions must use the area conversion.

The force acting on each unit of area.

Specification 10.01b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)

Force acting per unit area, calculated using pressure = force ÷ area.
Revise: Compound Measures