A district heating system records the heat supplied from three energy resources.
| Energy resource | 2012 / GWh | 2016 / GWh | 2020 / GWh |
|---|---|---|---|
| Gas | 46 | 37 | 28 |
| Bio-fuel | 14 | 22 | 26 |
| Geothermal | 10 | 17 | 16 |
Which conclusion can be drawn from the heating data?
Gas supplied exactly half of the total heat in 2016.
Bio-fuel supplied twice as much heat in 2020 as in 2012.
Geothermal had the largest increase between 2012 and 2020.
The total heat supplied was the same in 2012 and 2020.
86 exam-style questions on AQA GCSE Physics 1.3 National and global energy resources, covering 1.3 National and global energy resources. Each one has a worked solution and a mark scheme showing where the marks go.