Energy

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Across
  1. 3. Anything with mass and takes up space (volume).
  2. 4. Energy cannot be created or destroyed
  3. 5. A unit of energy
  4. 7. One surface rubbing against the other
  5. 8. Stored energy. More height and more mass = More PE.
  6. 9. A space with significantly less matter (like air or gas) than normal.
  7. 10. Ability to change itself or its environment.
Down
  1. 1. Heat energy
  2. 2. The sum of KE, PE or thermal energy. The total energy cannot change
  3. 6. Moving energy. More mass and speed/velocity = more KE.