Across
- 5. Power from energy from flowing water
- 6. Reducing energy demand to make it easier to meet future demands
- 11. Energy source traceable back to green plants
- 12. Production of electricity from tidal movement
- 13. Ethanol produced by fermenting sugars
- 14. The use of wind to generate electricity
Down
- 1. Decomposing biomass using bacteria in the absence of oxygen
- 2. Energy from the sun
- 3. Heat energy from the Earth's molten core
- 4. Heating biomass in a low oxygen environment
- 7. Energy that is provided by processes that replenish themselves
- 8. Solar system using a solar collector, a pump, and pipes to transfer heat from production site to the area to be heated.
- 9. Solid-state semiconductor that converts light into electricity
- 10. Solar System where light energy is converted into heat energy when it is absorbed by surfaces