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.
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Topic
Pressure and pressure differences in fluids (physics only)
Subtopic
Pressure in liquids (physics only)
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Quick explanation
(Physics only) Explain that pressure in a liquid is caused by the weight of liquid above
- This point belongs to Pressure and pressure differences in fluids (physics only), especially Pressure in liquids (physics only).
- You need to be able to (Physics only) Explain that pressure in a liquid is caused by the weight of liquid above.
- The key ideas to know are physics only.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
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).
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What should you know about (Physics only) Explain that pressure in a liquid is caused by the weight of liquid above?
Direct answer
In Physics, this page helps you answer questions about (Physics only) Explain that pressure in a liquid is caused by the weight of liquid above within Pressure and pressure differences in fluids (physics only). Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are Pressure and Liquid Pressure.
Key terms
- Pressure: The force exerted per unit area on a surface.
- Liquid Pressure: The pressure exerted by a liquid at a given depth, caused by the weight of the liquid above.
Common trap
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.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- (Physics only) Define pressure as force per unit area.
Pressure on a surface (physics only)
- (Physics only) Use the equation pressure = force normal to a surface divided by area of that surface.
Pressure on a surface (physics only)
- (Physics only) Calculate pressure from force and area.
Pressure on a surface (physics only)
- (Physics only) Calculate force from pressure and area.
Pressure on a surface (physics only)
- (Physics only) Calculate area from force and pressure.
Pressure on a surface (physics only)