energy

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Across
  1. 4. the transfer of energy that occurs when a force is applied over a distance
  2. 6. remains of ancient organisms that can be burned as an energy source
  3. 11. the energy that electromagnetic waves carry
  4. 12. where most all energy comes from
  5. 13. heat that comes from fire
  6. 14. two surfaces rubbing against each other
  7. 15. energy in motion
  8. 17. comes from variety of sources used mos often for communication
Down
  1. 1. the total energy an object has
  2. 2. energy source that has a limited usage
  3. 3. heat moving through air or water
  4. 5. type of energy source that cannot be used up
  5. 7. energy cannot be created or destroyed only transferred
  6. 8. energy source that is replaced as fast as or faster than it is used
  7. 9. thermal energy inside the earth
  8. 10. stored energy
  9. 16. the ability to cause change