Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Density and Pressure
72 practice questions
Topics covered
Practice questions
31–40 of 72
Question 31
3 marks · Normal
Answer and see the solution →Describe a practical method for measuring the pressure that a student's shoe exerts on the ground.
Question 32
1 mark · Normal
Answer and see the solution →Which of these will result in the greatest pressure exerted on the ground?
Force (N) Area (m²) 400 0.5 250 0.2 800 2.0 120 0.1 - A.400 N, 0.5 m²
- B.250 N, 0.2 m²
- C.800 N, 2.0 m²
- D.120 N, 0.1 m²
Question 33
2 marks · Normal
Answer and see the solution →A gardener stands on soft ground with both feet, exerting a total force of 700 N downwards. The combined area of both boots in contact with the ground is 0.36 m². Calculate the pressure exerted on the ground. Give your answer to 2 significant figures.
Question 34
4 marks · Normal
Answer and see the solution →A rectangular block of wood has a mass of 4.5 kg. It is placed flat on the ground so that it touches the floor with its largest face. The area of this face is 0.3 m².
(a)[1 mark]Calculate the weight of the block. (Take g = 10 N/kg.)
(b)[2 marks]Calculate the pressure the block exerts on the ground. Give the unit.
(c)[1 mark]If the block is stood on its smallest face of area 0.05 m², calculate the new pressure exerted on the ground.
Question 35
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 36
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 37
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 38
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 39
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 40
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.