Energy

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Across
  1. 1. When heat rises
  2. 2. Energy people use faster than nature can replace
  3. 5. materials that don't allow energy to pass through it.
  4. 6. energy that is stored
  5. 8. travels in the form of a wave
  6. 9. energy as motion
Down
  1. 1. energy that can switch from one to another
  2. 3. The ability to cause change
  3. 4. Heat transfer due to contact
  4. 7. energy that can be replaced within 100 years