Energy words

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Across
  1. 4. energy cannot be created or destroyed, it just changes form.
  2. 7. anything that has mass and takes up space
  3. 8. the amount of space something takes up
  4. 10. The ability to do work. (Cause change)
  5. 12. how much matter something has. It never changes
  6. 13. energy that is stored and ready to do work
Down
  1. 1. to limit the amount of energy used, to save or use wisely
  2. 2. energy in motion
  3. 3. a measure of gravity's pull on an object
  4. 5. once in motion, an object stays in motion until it is stopped by an outside force
  5. 6. the movement of one object against another. Friction always creates heat energy.
  6. 9. change from one form to another
  7. 11. the speed and direction of an object