Energy crossword puzzle

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Across
  1. 3. / ability to do work because of position
  2. 5. / compass
  3. 6. / some examples are ultraviolet light from the sun heat from a stove burner visible light from a candle
  4. 9. / examples are food and batteries
  5. 11. / stored energy based on height and mass
  6. 13. / the heat required to raise the temperature of the unit mass
  7. 14. / a current in a fluid that results from convection
  8. 19. / the change of energy from one form to another
  9. 20. / the process by which heat or electricity is directly transmitted through a substance
  10. 21. / internal energy of an object
  11. 22. / the ability to do work
Down
  1. 1. / some examples are boiling water, a radiator, and ice melting
  2. 2. / energy can only be transferred
  3. 4. / stored energy of elastic objects
  4. 5. / electric charge that allows work to be done
  5. 7. / a material or device that conducts or transmits heat, electricity, or sound
  6. 8. / Coal, oil, and natural gas
  7. 10. / physical substance in general, as distinct from mind and spirit
  8. 12. / energy caused by motion
  9. 15. / atomic bomb
  10. 16. / a substance which does not readily allow the passage of heat or sound or conduct electricity
  11. 17. / stored energy
  12. 18. / the process of burning something