Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
Pressure in Liquids and Gases
16 practice questions
Practice questions
1–8 of 8 · Easy
Question 1
1 mark · Easy
Answer and see the solution →State what is meant by the term "pressure acts equally in all directions" in a liquid at rest.
Question 2
2 marks · Easy
Answer and see the solution →A plastic bottle has four small holes at the same height, equally spaced around its side. The bottle is filled with coloured water.
(a)[1 mark]Describe what you observe as water flows from all four holes.
(b)[1 mark]Explain why this observation shows that liquid pressure acts equally in all directions at a point.
Question 3
2 marks · Easy
Answer and see the solution →A balloon filled with air pops. Explain, with reference to pressure in gases, why the pieces of the balloon fly out in all directions.
Question 4
1 mark · Easy
Answer and check →Which statement best describes the pressure at a point inside a stationary liquid?
- A.It only acts downwards.
- B.It acts equally in all directions.
- C.It acts only upwards.
- D.It acts only sideways.
Question 5
1 mark · Easy
Answer and see the solution →Give one practical example, not using a can or bottle, that shows pressure in a gas acts in all directions at a point.
Question 6
2 marks · Easy
Answer and see the solution →A diver at a certain depth in still water places a pressure sensor facing upward, downward, and sideways at the same point. The sensor gives the same reading every time. Explain what this experiment shows about the pressure in a liquid at rest.
Question 7
1 mark · Easy
Answer and check →Which observation best supports the idea that pressure in a stationary liquid acts equally in all directions at a point?
- A.Water only flows straight downwards from a hole.
- B.When a can with holes around it is filled with water, streams shoot out sideways in all directions.
- C.Water flows out of the top of a straw only.
- D.A liquid only presses sideways on a container wall.
Question 8
2 marks · Easy
Answer and see the solution →A glass tube is sealed at one end and filled with water. Three small holes are made at the same depth but on different sides of the tube.
(a)[1 mark]Predict what happens when the holes are opened.
(b)[1 mark]Explain what this tells you about the pressure in liquids at a given depth.