Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
51–60 of 133 · Easy
Question 51
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 52
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 53
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 54
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 55
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 56
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 57
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.
Question 58
2 marks · Easy
Answer and see the solution →A tank contains water to a depth of 4.0 m. The density of water is 1000 kg/m³. Take gravitational field strength g = 10 N/kg. Calculate the pressure difference between the top and the bottom of the tank.
Question 59
2 marks · Easy
Answer and see the solution →State the equation that links pressure difference, height, density, and gravitational field strength. Explain what each symbol means.
Question 60
1 mark · Easy
Answer and see the solution →Which change would reduce the pressure difference between two points in a liquid, all else staying the same?
- A.Increase the depth between points
- B.Decrease the density of the liquid
- C.Increase the gravitational field strength
- D.Use a wider tank