Question 1
Figure 1 shows a wind turbine.
Wind turbines may generate electricity when the electricity is not needed.
Two methods that can be used to store the energy from the turbine are:
Method A: Heating water to a high temperature.
Method B: Pumping water uphill into a reservoir.
Which energy store increases when water is heated?
[1 mark]
Which energy store increases when water is pumped uphill into a reservoir?
[1 mark]
Table 1 shows information about the two methods of storing energy.
Compare the advantages and disadvantages of the two methods of storing energy.
Include calculations in your answer.
[4 marks]
Decreasing the amount of carbon dioxide released by different activities will help slow down climate change.
Transport and generating electricity are the two activities that released the largest amounts of carbon dioxide in the UK in 2018.
Explain one change that would reduce the amount of carbon dioxide released by each activity.
Generating electricity
[4 marks]