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Separate Physics · Paper 2 · Higher Tier only · P5

Higher: pressure at depth in a liquid

Key ideas1 of 3

The liquid above creates pressure

Pressure due to a liquid column increases with the column’s vertical height, or depth below the surface. A deeper point has more weight of liquid above each unit area. At the same depth, a denser liquid has more mass and weight above each unit area, so its pressure is greater. In a stationary connected liquid, points at the same depth have the same pressure.

P is 1.0 m below the surface; Q and R are 3.0 m below. Density 1000 kg per cubic metre, g 10 N/kg.

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Higher Tier only · P5. Use alongside the shared P5 lessons.

AQA GCSE Physics 8463 · 4.5.5.1.2. Original notes, questions and diagrams. Models are simplified; teaching data are illustrative.