Energy

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Across
  1. 5. When energy changes forms, it is...?
  2. 7. A reaction that gives off heat
  3. 8. A reaction that absorbs heat
  4. 10. Energy that is stored
  5. 13. Energy made by vibrations in the air
  6. 15. Pulling back on a bow stores this energy
  7. 16. Energy is not created or destroyed, it is...?
Down
  1. 1. The further off the ground you are, the more of this energy you have
  2. 2. The energy stored in atoms
  3. 3. The energy of heat
  4. 4. Energy that powers the globe
  5. 5. Energy stored in food and explosives
  6. 6. Energy that you can see
  7. 9. The energy of movement
  8. 11. A measure of how much useful energy is converted
  9. 12. Something in science that always happens
  10. 14. Energy types that aren't useful are...?