Across
- 1. An energy providing substance
- 2. Alcohol mixed with gasoline
- 4. are hydrogen fuel cells renewable
- 5. any organic matter that can be used as energy
- 6. Do you need calm or rough winds to produce wind power?
- 9. can be replenished in a short time
- 11. does hydropower create pollution
- 13. Is wind power clean true/false
- 15. does hydrogen reduce pollution
- 16. how much electricity does coal produce
- 18. oil natural gas one of the three major types of fossil fuels
- 19. earth's interior heat
- 20. Is wind renewable?
- 21. chemicals that contain carbon atoms and hydrogen atoms
- 22. does hydrogen take up less volume
Down
- 1. is nuclear renewable
- 3. given off by the sun
- 7. What is oil mainly used for
- 8. power What is coal mostly used for
- 10. can be replenished in a long time'
- 12. electricity powered by flowing water
- 14. a compound used to make plastics, paints, etc.
- 17. a factory that heats up crude oil to make plastic