Energy crossword

12. a nuclear reaction in which the nucleus forms up into a heavy nucleus
13. fuels are burned, the chemical energy that is released can be used to generate another form of energy
14. 3 types of fossil fuels
15. an original source for wind and flowing energy
16. a chemical compound that contain hydro and carbon atoms
22. coal is most used for
23. compounds that are made from crude oil
25. alchohol mixed with gasoline
26. A layer of material that traps the air to help block the transfer of heat between the air inside the building
28. wood, plants parts, manure, and food wastes that can be used as fuels

1. 3 types of fossil fuels
2. electricity created by the power of moving water
3. a factory in which crude oil is heated and separated into fuels and other products
4. heat from the earth's interior
5. another name for oil
6. light and heat given off by the sun
7. fossil fuels made in a long amount of time
8. oil is mainly used for
9. a substance that provides energy
10. house that uses passive and active heating systems to get electricity and heat
11. save energy
17. energy created by the movement of the air
18. percent of energy used to do work
19. when uranium rods melt and explode
20. energy-rich substances formed from the remains of org
21. a nuclear reaction in which the nucleus separates
24. what source is hydrogen fuel cells
27. used to start a reaction