Across
- 4. These cells convert solar energy to electricity
- 6. Energy produced from material produced by living organisms
- 8. Using the movement of the tides to generate electricity
- 10. Solar collectors that use heated fluid to heat water or air
- 11. A grouping of wind turbines
- 12. This heat pump uses the stable temperature of the soil a few feet under the ground
- 13. These batteries use hydrogen gas to produce electricity
- 15. Electricity produced by the combustion of biomass
Down
- 1. Liquid fuels from biomass sources
- 2. The type of solar heating that uses technology to collect, move and store solar heat
- 3. Using mirrors to focus sunlight to generate electricity
- 5. Heat produced below the Earth's surface
- 7. The type of solar heating that involves building design that collects and stores solar energy naturally
- 9. The kinetic energy of moving water is used to generate electricity
- 14. A device that converts wind energy to electricity