Across
- 3. an area of land with a group of energy-producing windmills or wind turbines.
- 5. energy created by waves in water.
- 7. a central building heating and/or cooling system that takes advantage of the relatively constant year-round ground temperature to pump heat to or from the ground.
- 8. a turbine having a large vaned wheel rotated by the wind to generate electricity.
- 9. a cell producing an electric current directly from a chemical reaction.
- 10. A type of solar heating which is the cheapest way to hear your home.
Down
- 1. A fuel derived directly from living matter.
- 2. energy creating by water.
- 4. chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
- 6. What type of solar energy occurs when you use solar panels?
- 7. energy made by heat inside the Earth's crust.
- 10. Converts visible light to direct eneegy