Energy

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Across
  1. 4. used to write on paper
  2. 5. sharp! Usually made out of metal
  3. 7. counting things carefully
  4. 9. a type of energy, usually PE = mgh
Down
  1. 1. a type of energy that we usually call heat
  2. 2. a type of energy, usually KE = (0.5mv^2)
  3. 3. ability to do work
  4. 6. measured in meters
  5. 8. a type of energy from the Sun