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1.3 Pressure

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Question 30
H

An air bubble of volume 2.0 cm3 is released at a depth of 20 m in a lake. The bubble rises to the surface.

Atmospheric pressure at the surface of the lake is 100 kPa. Assume the temperature of the air in the bubble stays the same.

What is the volume of the bubble just before it reaches the surface?

Use the Equation Sheet.

Density of water = 1000 kg/m3

Use g=10 N/kgg = 10\ \text{N/kg}g=10 N/kg

[1]
A

0.67 cm30.67\ \text{cm}^30.67 cm3

B

4.0 cm34.0\ \text{cm}^34.0 cm3

C

6.0 cm36.0\ \text{cm}^36.0 cm3

D

40 cm340\ \text{cm}^340 cm3

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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