Learning objective

(Physics only) Explain that pressure in a liquid is caused by the weight of liquid above.

Read the explanation, check the common trap, then practise with flashcards and questions.

Start flashcards Try practice questions Topic hub

At a glance

Flashcards

Questions

Topic

Pressure and pressure differences in fluids (physics only)

Subtopic

Pressure in liquids (physics only)

AQA GCSE PhysicsForces

Study support

Understand this objective

Short explanation

In the subtopic Pressure in liquids (physics only), this learning objective focuses on (Physics only) Explain that pressure in a liquid is caused by the weight of liquid above. For AQA GCSE Physics 8463 Unit 4.5 Forces, keep the explanation inside Pressure in liquids (physics only) and Pressure and pressure differences in fluids (physics only). Approved keywords for this objective include physics only. A strong answer separates mass and weight, uses correct units where quantities are involved, and links the physical reasoning back to (Physics only) Explain that pressure in a liquid is caused by the weight of liquid above. This is not a generic revision point: it is specifically about Pressure in liquids (physics only), Pressure and pressure differences in fluids (physics only), and the approved wording of the learning objective.

Key concepts

PressureLiquid Pressure

Why it matters

This objective helps connect Pressure in liquids (physics only) to exam-style questions, flashcards, and revision notes for Pressure and pressure differences in fluids (physics only).

Common mistakes

1 linked

Confusing liquid pressure with atmospheric pressure: Explain that liquid pressure at depth is the sum of the atmospheric pressure at the surface and the hydrostatic pressure from the weight of the liquid above, calculated as p = ρgh. Emphasise that the weight of the liquid column adds to the atmospheric pressure, not replaces it. In Pressure in liquids (physics only), correct the mistake by naming the relevant force or motion quantity and checking mass and weight.

Revision tools