Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Energy Resources and Electricity Generation
71 practice questions
Topics covered
Practice questions
21–30 of 34 · Easy
Question 21
2 marks · Easy
Answer and see the solution →Consider a location in the northern hemisphere using solar heating panels.
(a)[1 mark]Which direction should panels face for best heating?
(b)[1 mark]Explain why this direction is chosen.
Question 22
1 mark · Easy
Answer and see the solution →State one reason why solar heating panels only provide small quantities of hot water.
Question 23
2 marks · Easy
Answer and see the solution →The diagram shows a solar heating panel used on a house.
Simple solar heating panel (a)[1 mark]Label on the diagram: i) The flow direction of water in the pipe
(b)[1 mark]State how the panel should be angled relative to sunlight for maximum efficiency.
Question 24
1 mark · Easy
Answer and see the solution →Give one way using solar heating panels helps protect the environment.
Question 25
1 mark · Easy
Answer and see the solution →State one reason why hydroelectric power stations are able to respond quickly to sudden increases in electricity demand.
Question 26
1 mark · Easy
Answer and check →Which type of power station is best for meeting a sudden, short-term increase in electricity demand?
- A.Coal-fired power station
- B.Hydroelectric power station
- C.Nuclear power station
- D.Wind farm
Question 27
2 marks · Easy
Answer and see the solution →Explain why nuclear power stations cannot be used to meet rapid, unexpected increases in electricity demand.
Question 28
2 marks · Easy
Answer and see the solution →Electricity suppliers must match supply exactly to demand to avoid power cuts.
(a)[1 mark]State one way electricity demand can change suddenly.
(b)[1 mark]Name a type of power station that is usually used to deal with these sudden changes.
Question 29
3 marks · Easy
Answer and see the solution →The demand for electricity in a country increases significantly during cold winters.
(a)[1 mark]Explain one reason for this increase.
(b)[1 mark]Name one type of power station that cannot respond quickly to increases in demand.
(c)[1 mark]Describe what the electricity grid operators do to make sure enough electricity is available at cold times.
Question 30
2 marks · Easy
Answer and see the solution →A table gives the start-up times for different types of power station: | Type | Start-up time | |------------------|--------------| | Nuclear | 24 hours | | Coal-fired | 6 hours | | Gas-fired | 30 minutes | | Hydroelectric | 2 minutes | Which type of power station(s) could be used to deal with a sudden demand for electricity during a football match interval? Give a reason for your answer.