Across
- 3. Cell that converts the chemical energy from a fuel into electricity through a chemical reaction of positively charged hydrogen ions with oxygen or another oxidizing agent.
- 4. Energy produced from Wood, manure, and Grain.
- 6. Hydroelectric power
- 9. Type of solar heating that uses electrical and mechanical equipment to convert solar energy to heat and power.
- 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.
- 11. Energy derived from tidal waves.
- 12. technology that uses mirrors to focus sunlight in order to generate electricity.
Down
- 1. Type of energy derived from the heat of the earth.
- 2. Type of solar heating derived from the suns energy.
- 4. Liquid fuels that help to power millions of vehicles on today's roads.
- 5. chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
- 7. Cell with a specialized semiconductor diode that converts visible light into direct current
- 8. Farm An area of land with a group of energy-producing windmills or wind turbines.