Across
- 4. wood plants manure food wastes that can be used as fuels
- 6. can be remade in relatively short amount of time
- 7. replacement of incandescent bulbs
- 12. electricity from flowing water
- 14. cannot be remade in short amount of time
- 15. split during nuclear fission
- 17. make up fossil fuels
- 19. compounds that come from oil
- 21. factory where oil is put into products
- 23. coming together
- 26. solid fossil fuel formed by the plant remains
- 27. slow down chain reactions
- 28. object that produces electricity from wind
Down
- 1. when fuels contain stored chemical energy
- 2. add gasoline and alcohol
- 3. the percent saved
- 5. object that produces electricity from water
- 8. what oil is mainly used for
- 9. something that makes energy
- 10. obtaining electricity through water
- 11. obtaining electricity through sun
- 13. saving energy
- 16. light and heat given off by the sun
- 18. what most of the coal used for
- 20. traps warm air inside of house
- 22. breaking apart
- 24. when fuel rods generate too much heat
- 25. heat from Earth's interior