Across
- 3. fuels An energy-rich substance formed from the remains of organisms
- 5. The central core of an atom that contains protons and neutrons
- 6. Energy Original source of the energy in wind and flowing water
- 8. The process of burning a fuel
- 11. Mixing alcohols to gasoline makes it
- 13. Chemicals that contains carbon and hydrogen
- 14. rod A uranium rod that undergoes fission in a nuclear reactor
- 15. compound made from oil
- 17. Coming together
- 18. How wind, flowing water and tides are used to produce electricity
- 19. energy Heat from Earth's interior
- 22. The percentage of energy that is used
- 23. Transformation A change from one form of energy to another
- 24. Oil is separated into fuels
- 26. A resource that is either always available or is naturally replaced in a relatively short time
- 27. rod A cadmium rod used in a nuclear reactor to absorb neutrons from fission reactions
Down
- 1. Breaking apart
- 2. A dangerous condition in which fuel rods inside a nuclear reactor melt
- 4. Uses the most electricity in the U.S
- 7. Traps air to help block the transfer of heat
- 9. A natural resource that is not replaced in a useful time frame
- 10. Power Electricity produced by flowing water
- 12. Uses the most oil in the U.S
- 16. fuel Fuel made from living things
- 20. Power Source that uses the most coal in U.S
- 21. Liquid fossil fuel oil
- 25. vessel The part of a nuclear reactor where nuclear fission occurs