work and energy

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Across
  1. 2. The envelope of gases surrounding every celestial body
  2. 5. Energy stored by a body or system by virtue of it's position
  3. 7. Involving the body
  4. 9. The mechanical energy that a body has in virtue of motion
Down
  1. 1. How much there is or how many there are of something
  2. 3. Characterized by energetic movement
  3. 4. Process or manner of functioning
  4. 6. Forceful exertion
  5. 8. Activity involving mental or physical effort in order to achieve a result