Energy and Light crossword

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Across
  1. 3. No light is let through
  2. 5. Lets all light through
  3. 8. Any push or pull on a object
  4. 10. The Force that works against motion
  5. 11. A type of electromagnetic radiation
  6. 13. Energy in motion
  7. 16. Stored energy
  8. 19. The transfer of heat by waves
  9. 20. A Region that is empty of any matter
Down
  1. 1. The transfer of heat energy through liquids or gases
  2. 2. Lets some light through
  3. 4. The transfer of heat through solids
  4. 6. The sun gives this off
  5. 7. A flow of energy; as the energy moves from one state to the another, a difference in temperature will occur
  6. 9. Ability to do work or cause change in matter
  7. 12. Energy that lets us see
  8. 14. Emitting light as a result of being heated
  9. 15. The basic unit of energy and of work
  10. 17. A force that pulls objects towards the center of the earth
  11. 18. A measure of how much matter is in an object