Across
- 1. need reservoir and dam to use this energy
- 2. force of moving water
- 6. heat from the earth's interior
- 8. farmed mixture made by gasoline
- 9. not a often used energy source because its expensive and hard To convert
- 11. change in a form of energy
- 12. clean energy source
- 13. reducing energy use
- 15. factory were crude oil is refined
- 17. convert this source into energy
- 18. compounds made from energy
- 20. energy made from dead organisms
- 22. take billions of years to renew
- 24. chemical compounds that contain carbon and hydrogen atoms
- 28. lightbulbs more commonly used because they conserve more energy
- 29. form of burning energy
Down
- 1. good for rocket fuel
- 3. ways to use less energy
- 4. sends down radiant energy rays to convert to energy
- 5. energy conserver inside walls
- 7. limitation of this energy source is it's not always sunny
- 10. form of smart energy
- 14. non-renewable source another word for oil
- 16. mainly used for electric power
- 19. the three major types of fuel
- 21. light and heat given off by the sun
- 23. limitation could cause earthquakes
- 25. this fuel is mainly used for transportation.
- 26. when thermal energy rods burst
- 27. substance that provides energy