Energy Sources

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Across
  1. 4. power that is generated from moving water
  2. 7. cannot be replaced quick enough
  3. 9. a dark brown rock
  4. 10. the flow of electrical power
  5. 11. a colorless liquid
  6. 12. energy from a source that is not depleted when used
  7. 13. plant-based material used as a fuel for heat
  8. 15. a viscous liquid
  9. 16. power produced by the surge of ocean waters
Down
  1. 1. colorless,odorless substance of the chemical elements
  2. 2. mixture of gases which are rich in hydrocarbons
  3. 3. made from decomposing plants and animals
  4. 5. a natural movement of air
  5. 6. heat energy from the earth
  6. 8. energy stored inside a atom
  7. 14. light and heat that comes from the sun