11 mark
What is the gravitational field strength at the Earth’s surface?
10 N/kg
16 N/kg
50 N/kg
230 N/kg
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Pressure (OCR GCSE Physics A (Gateway))
Exam Questions
56 mins15 questions21 mark
A sealed boiling tube contains gas.
The boiling tube is heated.
What happens?
The particles in the gas evaporate.
The particles in the gas expand.
The particles in the gas move faster.
The particles in the gas move slower.
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31 mark
A cylinder contains a gas.
The volume of the gas is halved and the temperature remains the same.
What happens to the pressure of the gas?
It remains the same.
It halves.
It doubles.
It quadruples.
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41 mark
Which factor influences whether an object floats or sinks?
Size of object
Depth of water
Distance from the shore
Density of object
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51 mark
A syringe contains air.
The piston is pushed inwards.
How do the pressure and volume of the air in the syringe change?
| Pressure | Volume |
A | decreases | decreases |
B | decreases | increases |
C | increases | decreases |
D | increases | increases |
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61 mark
These statements are about pressure and volume of a gas.
Which statement is correct?
Volume doubles, pressure doubles
Volume doubles, pressure halves
Volume halves, pressure halves
Volume halves, pressure stays constant
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71 mark
Which statement explains why atmospheric pressure changes as you climb up a mountain?
Number of air molecules above you decrease the further you move from the centre of the Earth.
Density of air increases the further you move from the centre of the Earth.
Gravity increases the further you move from the centre of the Earth.
Temperature decreases the further you move from the centre of the Earth.
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81 mark
Higher Tier Only
What is the change in pressure when a diver moves from a depth of 3.0 m to a depth of 8.0 m?
Assume gravitational field strength on Earth = 10 N/kg and water density = 1000 kg/m3.
Use an equation from the data sheet to help you.
30 000 Pa
50 000 Pa
80 000 Pa
110 000 Pa
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91 mark
A fluid is compressed by pushing the plunger into the body of a sealed syringe.
Which of these statements is true?
There is a net force towards the plunger.
There is no force towards the nozzle.
There is a force parallel to all points on the surface of the fluid.
There is a force at 90° to all points on the surface of the fluid.
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101 mark
A sealed can contains gas.
The can is heated and the pressure of the gas increases.
How do the gas particles cause this increase in pressure?
The average distance between the particles increases.
The particles expand.
The particles hit each other more frequently.
The particles hit the can more frequently.
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