Energy Puzzler!

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Across
  1. 4. mechanical energy that is stored
  2. 5. energy that causes a transfer of heat
  3. 6. what is needed to do work or cause change
  4. 8. energy that is stored in atoms and molecules
  5. 9. mechanical energy that is moving
Down
  1. 1. energy from the flow of an electrical charge
  2. 2. energy that travels in waves and vibrates the ear drum
  3. 3. changing the form of energy in an object
  4. 5. moving the same kind of energy from one object to another
  5. 7. energy from the sun or other light source