Across
- 4. An organization that provides any combination of consulting
- 5. specialized semiconductor diode that converts visible light into direct current
- 8. a form of energy obtained from within the earth
- 10. 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.hydropower
- 11. a turbine having a large vaned wheel rotated by the wind to generate electricity.
- 12. a group of wind turbines in the same location used to produce electricity
Down
- 1. the least expensive way to heat your home
- 2. is a form of hydropower that converts the energy obtained from tides into useful forms of power, mainly electricity
- 3. uses mechanical and electrical equipment
- 6. chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
- 7. energy from burning vegetation
- 9. a fuel derived directly from living matter