Chapter 17-18

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Across
  1. 1. nuclei splitting releasing energy.
  2. 3. energy within the nucleas of an atom.
  3. 5. when particles combine and release tremendous amounts of energy.
  4. 6. energy resources still in development
  5. 9. saving energy.
  6. 10. a device that turns mechanical energy into electrical energy.
  7. 12. uses suns energy to heat directly
  8. 16. energy taken from below earth's crust for use.
  9. 17. produces electricity from chemical energy.
Down
  1. 2. percentage of electricity that does useful work in a system.
  2. 4. are the remains of ancient organisms that changed into coal, oil, or gas.
  3. 7. energy from the sun being collected for heating.
  4. 8. energy in moving water harnessed.
  5. 11. organic matter used as fuel.
  6. 12. crude oil
  7. 13. energy sources that are constantly being formed.
  8. 14. oil deposits that can be extracted profitably.
  9. 15. experimental power stations along coast of Hawaii