unit 4

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Across
  1. 2. ability to do work or cause a change
  2. 8. one full orbit of an object around another
  3. 9. one hole spin of an object on its axis
  4. 10. frozen mass of different types of ice and dust
  5. 12. tendency of an object to resist any change in motion
Down
  1. 1. describes the speed and the direction of an object
  2. 3. energy due to motion
  3. 4. an explosion that occurs at the end of a stars life
  4. 5. transfer of heat between objects that are in contact
  5. 6. push or pull that acts on an object
  6. 7. device that changes direction and the amount of force needed
  7. 11. hige system of stars, dust and gas held together by gravity