McGroartyQ Energy Crossword

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Across
  1. 2. a factor in which crude oil is heated and separated into fuels and other products
  2. 3. another name for oil from the Latin word "Petra"
  3. 6. made of metal cadmium, inserted between the fuel rods
  4. 9. what percentage of the coal mined in the United States is exported to other countries
  5. 11. putting together
  6. 13. the part of the nuclear reactor where nuclear fission occurs
  7. 16. reducing energy use
  8. 20. electricity produced by flowing water
  9. 21. the percentage of energy that is actually used to perform work
  10. 22. solar energy
  11. 23. breaking apart
  12. 24. the reactor vessel contains rods of U-235
  13. 28. compounds that are made from oil
  14. 29. energy rich substances formed from the remains of organisms
Down
  1. 1. a layer of material that traps air to help block the transfer of heat
  2. 4. adding the alcohol to gasoline
  3. 5. chemical compounds that contain carbon and hydrogen atoms
  4. 7. what is oil mainly used for
  5. 8. heat from Earth's interior
  6. 10. one form of energy to another
  7. 12. the heat changes water to steam in where
  8. 14. energy from the sun
  9. 15. simplest form of energy
  10. 17. what is most of the coal used for
  11. 18. percentage of United States electricity production coal
  12. 19. comes from the force of moving water
  13. 23. substance that provides energy
  14. 25. the center core of an atom that contains protons and neutrons
  15. 26. group of fuels wood belongs to
  16. 27. the fuel rods generated so much heat that they started to melt