Across
- 5. original source of energy
- 6. a machine for producing continuous power in which a wheel or rotor is made to resolve a fast moving flow of water, steam, gas, or other fluids
- 7. light and heat given off by the sun
- 11. a mixture of gasoline and alcohol
- 13. chemical compounds that contains carbon and hydrogen atoms
- 15. 13% of the ____ mined in the U.S is exported to other countries
- 16. two _____ nuclei combine to produce a single larger nucleus
- 17. a nuclear reaction that means come together
- 22. heat from Earth's interior
- 23. a substance that provides energy as a result of a chemical change
- 24. part of the nuclear reactor where nuclear fission occurs
- 26. coal is mainly used for this
- 28. cannot be replenished in a short amount of time
- 29. part of the reactor that contains rods of U-235
- 30. fuel rods generate so much heat they begin to melt
Down
- 1. a layer of material that traps air to block the transfer of heat between the air inside and outside of a building
- 2. this type of light uses less energy and uses all of the energy it takes in
- 3. a factory in which crude oil is heated and separated into fuels and other products
- 4. taking shorter showers, turning off lights when not in use, and turning off the AC or heater not needed are all examples of this
- 8. there are many _______ of solar energy
- 9. electricity produced by flowing water
- 10. made of metal cadmium and are inserted between fuel rods
- 12. oil is mainly used for this
- 14. wood,plant parts, manure, and food wastes that can be used as fuels
- 18. a nuclear reaction that breaks apart
- 19. compounds that are made from oil
- 20. reducing energy use
- 21. energy source that burns cleanly
- 25. starts a nuclear fission or starts the reaction
- 27. can be replenished in a relatively short amount of time