Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
Pressure in liquids and gases
16 practice questions
Practice questions
1–10 of 16
Question 1
2 marks · Easy
Answer and see the solution →A block has a mass of 10 kg and is placed on the ground, covering an area of 0.02 m². Calculate the pressure the block exerts on the ground. (Take gravitational field strength ).
Question 2
1 mark · Easy
Answer and check →Which of the following will increase the pressure at the bottom of a liquid tank?
- A.Increasing the depth of the liquid
- B.Decreasing the density of the liquid
- C.Decreasing the gravitational field strength
- D.Decreasing the area of the tank base
Question 3
3 marks · Easy
Answer and see the solution →A science teacher uses a can with small holes around the sides and fills it with water to demonstrate liquid pressure.
(a)[1 mark]Describe what you would observe as water flows out of the holes when the can is full.
(b)[2 marks]Explain what this demonstrates about pressure in liquids.
Question 4
2 marks · Easy
Answer and see the solution →Calculate the pressure 5 metres below the surface of a swimming pool. (Density of water , ).
Question 5
1 mark · Easy
Answer and see the solution →State the unit of pressure in the SI system.
Question 6
2 marks · Easy
Answer and see the solution →Explain why a sharp knife cuts more easily than a blunt one, using ideas about pressure.
Question 7
1 mark · Easy
Answer and see the solution →State what causes atmospheric pressure.
Question 8
2 marks · Easy
Answer and see the solution →A laboratory set of Magdeburg hemispheres has a surface area of 0.04 m². The atmospheric pressure is 100,000 Pa.
(a)[2 marks]Calculate the total force of the atmosphere on the outside of the hemispheres.
Question 9
4 marks · Normal
Answer and see the solution →A diver is swimming 15 m below the surface of a lake. The density of water is and gravitational field strength is .
(a)[2 marks]Calculate the pressure due to the water at this depth.
(b)[2 marks]Explain why the pressure is the same in all directions at this depth.
Question 10
2 marks · Normal
Answer and see the solution →Explain why the pressure on your body from the atmosphere does not crush you.