Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Energy Resources and Electricity Generation
71 practice questions
Topics covered
Practice questions
31–34 of 34 · Easy
Question 31
2 marks · Easy
Answer and see the solution →Electricity generation must match supply to demand at all times.
(a)[1 mark]Name two factors that affect the demand for electricity throughout a typical day.
(b)[1 mark]Describe one way the National Grid prepares for predictable changes in demand.
Question 32
1 mark · Easy
Answer and check →Which of the following best describes why wind farms cannot be relied on to meet sudden increases in electricity demand?
- A.They take many hours to start up.
- B.They are very expensive to run.
- C.Wind speed and direction are unpredictable.
- D.They produce dangerous waste.
Question 33
4 marks · Easy
Answer and see the solution →A family is deciding how to heat their new home. They can choose between installing a solar heating panel or using natural gas from the local supply.
(a)[2 marks]Describe how a solar heating panel warms water for use in a home.
(b)[2 marks]State one advantage and one disadvantage of using solar heating compared to using natural gas.
Question 34
4 marks · Easy
Answer and see the solution →To cope with a sudden cold snap, a country's electricity demand rises quickly in one evening.
(a)[2 marks]Name one type of power station that can respond quickly to sudden changes in demand, and one type that cannot.
(b)[2 marks]Explain with reasons why the two types of power station you named in part (a) have these responses to demand.