Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
31–40 of 144 · Normal
Question 31
3 marks · Normal
Answer and see the solution →Describe an experiment you could carry out to show that the pressure in a liquid increases with depth. You may draw a diagram if it helps your description.
Question 32
2 marks · Normal
Answer and see the solution →Describe why the air pressure is less at the top of a mountain than at sea level.
Question 33
5 marks · Normal
Answer and see the solution →A rectangular wooden block has a mass of 0.96 kg. It has dimensions 0.20 m (length), 0.10 m (width), and 0.08 m (height). The block rests flat on the ground.
(a)[2 marks]Calculate the density of the wooden block in kg/m³.
(b)[2 marks]Calculate the pressure the block exerts on the ground, assuming the whole lower face touches the ground. Give your answer in pascals (Pa).
(c)[1 mark]State the equation linking pressure, force and area.
Question 34
4 marks · Normal
Answer and see the solution →A metal can has holes at different heights, and water squirts out horizontally from each hole when filled. The can stands in a tray. Assume g = 10 N/kg.
(a)[2 marks]Explain why the water squirts further from the lower holes than from the upper holes.
(b)[2 marks]The bottom hole is 0.20 m below the water surface. If the density of water is 1,000 kg/m³, calculate the pressure difference between the surface and the bottom hole.
Question 35
4 marks · Normal
Answer and see the solution →The atmosphere exerts a pressure of about 100,000 Pa at Earth's surface. A glass window has an area of 0.50 m².
(a)[2 marks]Calculate the force exerted on the outside of the window by the atmosphere.
(b)[2 marks]Describe why you do not notice this large force acting on the window in daily life.
Question 36
5 marks · Normal
Answer and see the solution →A cylindrical tube has an internal cross-sectional area of 0.003 m². The tube is filled with oil to a height of 1.2 m. The density of oil is 850 kg/m³. Take g = 10 N/kg.
(a)[2 marks]Calculate the pressure difference between the top and bottom of the oil column.
(b)[2 marks]Calculate the total force that the oil exerts on the base of the tube due to its pressure.
(c)[1 mark]State how the pressure at the bottom changes if the height of the oil is doubled. Explain your answer.
Question 37
2 marks · Normal
Answer and see the solution →A metal cube has a mass of 540 g and a volume of 200 cm³.
Calculate the density of the metal, giving your answer in kg/m³.
Question 38
4 marks · Normal
Answer and see the solution →Describe an experiment you could use to find the density of a small, irregular solid object such as a stone.
Question 39
2 marks · Normal
Answer and see the solution →A measuring cylinder contains 80 ml of oil. The mass of the oil is found to be 68 g.
Calculate the density of the oil in kg/m³. Give your answer to 2 significant figures.
Question 40
1 mark · Normal
Answer and check →Which of the following is the correct SI unit for density?
- A.kg/m³
- B.g/cm³
- C.kg/cm³
- D.m³/kg