Energy crossword

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Across
  1. 2. quantity that must be changed or transferred to make something happen
  2. 6. a series of actions or steps
  3. 7. energy that is spread out is not useful
  4. 10. energy energy stored in nuclear of an atom
  5. 12. the fraction of energy supplied with is wasted
  6. 13. potential energy the energy store of an object raised up against the force of gravity
  7. 14. energy way is usually wasted
Down
  1. 1. allows two surfaces to slide past each other more easily
  2. 3. energy energy stored in bonds between atoms that can be released when  chemical reactions happen
  3. 4. energy the energy store a moving object
  4. 5. energy energy transferred from a hotter place to a colder place
  5. 8. energy energy stored in the changed shape of an object
  6. 9. something that happens or takes place
  7. 11. work transferring energy by means of a force