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1.3 Pressure

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Question 26
H

A wooden block floats with part of it below the surface of some water.

Which statement explains why there is an upwards force on the block?

[1]
A

The water pressure on the bottom face is greater than the air pressure on the top face

B

The air pressure on the top face is greater than the water pressure on the bottom face

C

The water pressure on the sides of the block pushes it upwards out of the water

D

The block is less dense than water, so the water pressure on the block is zero

Markscheme

1.3 Pressure Questions

  1. GCSE
  2. /Physics
  3. /1.3 Pressure

50 exam-style questions on OCR GCSE Physics 1.3 Pressure, covering 1.3.1 Molecular motion, temperature and gas pressure, 1.3.2 Gas pressure at constant volume, 1.3.3 Compressing and expanding gases, 1.3.4 Gas volume and pressure at constant temperature, 1.3.5 Doing work on a gas, 1.3.6 The Earth's atmosphere and atmospheric pressure, 1.3.7 Atmospheric pressure and height, 1.3.8 Floating and sinking, 1.3.9 Pressure in liquids and upthrust, and 1.3.10 Pressure differences with depth. Each one has a worked solution and a mark scheme showing where the marks go.

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