krishnac Energy Crossword

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Across
  1. 3. adding the alcohol to gasoline forms a mixture
  2. 6. a layer of material that traps air to help block the transfer of heat
  3. 9. a factory in which crude oil is heated and separated into fuels and other products
  4. 10. where uranium fuel undergoes nuclear fission
  5. 12. form of power produced by flowing water
  6. 13. oil is mainly used for
  7. 15. are the chemical compounds which fossil fuels are made of
  8. 16. reducing energy use
  9. 21. percentage of coal mined in the U.S.A exported to other countries
  10. 22. resources that can be used repeatedly
  11. 23. the neutron hits the U235 nucleus, and the nucleus splits into two smaller nuclei and two more neutrons
  12. 25. a fossil fuel used a majority of the time back then
  13. 27. are coal, natural gas, and petroleum
  14. 29. resources that can run out, but can be formed again after millions of years
Down
  1. 1. thermal energy converted to mechanical energy
  2. 2. when the fuel rods melt, it is also known as
  3. 4. lightbulbs that use more enegy
  4. 5. used to slow down the chain reactions
  5. 7. lightbulbs that use less energy
  6. 8. most of coal is used for
  7. 11. are compounds that are made from oil
  8. 14. the original source of energy in wind and flowing water
  9. 17. the least used of the three fossil fuels for electricity production
  10. 18. the percentage of energy that is actually used to perform work
  11. 19. form of a fuel and examples are wood and plant parts
  12. 20. two hydrogen nuclei combine to create a helium nucleus
  13. 24. can only be used when sun is shining
  14. 26. form of energy and is heat from earth's interior
  15. 28. a substance that provides energy such as heat, light, motion, or electricity