what is energy?

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Across
  1. 3. energy powered by the sun
  2. 4. a tool for making holes
  3. 6. a small battery operated portable light
  4. 7. to provide power
  5. 8. to do with chemistry
  6. 9. the kind of energy to create heat, light and to make machines work
  7. 11. to go from one place to another
  8. 13. to do with machines
Down
  1. 1. the remains of a prehistoric animal or plant that has been in the ground for a very long time
  2. 2. a lever you press on a car, bicycle, machine or to play some musical instruments
  3. 5. the goods carried in a ship or aircraft
  4. 7. to do with electricity
  5. 10. tedious, dull and uninteresting
  6. 12. a portable device for storing and supplying electricity
  7. 14. a small vehicle for carrying loads