Energy Resources

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Across
  1. 3. rods made of U-235
  2. 6. energy from the sun
  3. 7. compounds made of oil
  4. 8. the splitting of an atom's nucleus
  5. 10. a change from one form of energy to another
  6. 13. another name for oil
  7. 14. a substance that provides energy
  8. 16. fuel rods generate too much heat that they start to melt
  9. 17. a factory where crude oil is heated and separated
  10. 18. energy-rich substances
  11. 19. a layer of material that traps air to block the transfer of heat
  12. 20. chemicals that have carbon and hydrogen atoms
Down
  1. 1. electricity made by flowing water
  2. 2. made of metal cadmium
  3. 4. made from alcohol and gasoline
  4. 5. the part of the nuclear reactor where nuclear fission occurs
  5. 9. reducing energy use
  6. 11. the central core of an atom
  7. 12. made from living things
  8. 15. the percentage of energy that is actually used to perform work