Across
- 4. stored energy
- 5. biomass in a liquid
- 6. is chemical decomposition
- 8. used to generate electricity
- 9. solar cell
- 10. energy from windmill
- 12. central heating
- 13. converts the energy obtained from tides into power
- 14. natural gas
Down
- 1. where windturbines are
- 2. absorbs solar radiation
- 3. least expensive way to heat your home
- 7. heat from earth
- 11. fuel into energy