Across
- 3. Is a solid fossil fuel
- 4. Unit for energy
- 6. Holds heat in the earth's atmosphere, keeping the earth warm.
- 8. Spins to turn a generator and create electrical current
- 9. Produced by wind turbines
- 10. will never run out
- 11. Fossil fuels are good at balancing supply and demand because you can ...... them and burn them when needed
- 12. produce greenhouse gases as they are burnt
Down
- 1. greenhouse gas produced by combustion
- 2. Unit for power, used to measure the energy produced in powerstations
- 5. Nuclear energy, coal, oil and gas are all ...........
- 7. Energy sources like solar and wind that are not always available
- 13. A limitation of ....... energy is that it is only available when the sun shines