Isaac crossword paper

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Across
  1. 2. happens as heat rises
  2. 5. energy in motion
  3. 7. the ability to create energy in a system
  4. 10. is powered by the wind
  5. 12. heat transfer through air or empty space
  6. 13. heat energy
  7. 14. measure of coldness or hotness
  8. 15. I use my legs to ride my bike
Down
  1. 1. mass divided by volume
  2. 3. transfer of heat without movement
  3. 4. stored energy
  4. 6. energy made by a reaction
  5. 8. something that moves like water
  6. 9. the opposite of cold
  7. 11. my phone uses this energy to work