Across
- 4. will not run out
- 5. solar is useless at this time
- 6. attached to turbines to make electricity
- 8. uses heat from rocks to make steam
- 9. these could be affected if we stop the tide going out, they feed in mud
- 12. uses cells to make electricity from sunlight
Down
- 1. uses big spinning turbines on hills
- 2. step up or down the voltage
- 3. hold up cables
- 4. fills a reservoir
- 7. these solar devices heat water
- 10. used to make a reservoir for hydro power
- 11. these turbines make energy out at sea