Energy!

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Across
  1. 3. vibrating waves
  2. 4. stored in the bonds of chemical compounds
  3. 5. what this crossword puzzle is about
  4. 7. radiant energy emitted by the sun
  5. 8. form of energy resulting from the flow of electric charge
  6. 9. the potential energy held by an object because of its high position compared to a lower position
  7. 13. heat that comes from the sub-surface of the earth
  8. 14. heat energy
  9. 15. The energy acquired by the objects upon which work is done
Down
  1. 1. animal and plant energy
  2. 2. stored energy
  3. 6. the energy of electromagnetic waves
  4. 10. steam turbines
  5. 11. form of electromagnetic radiation
  6. 12. energy in motion