Energy Crossword

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Across
  1. 3. Motion and position
  2. 4. Speed of vibrating particles
  3. 5. spreading of sound
  4. 7. Rhymes with piquancy
  5. 8. Lightning
  6. 10. Energy stored in chemical bonds
  7. 12. Helps you see when it is dark
  8. 14. More movement in particles
  9. 17. The lengths of waves
  10. 18. Moving objects
  11. 19. Stored energy
  12. 20. You hear this
Down
  1. 1. mirrors work with this
  2. 2. It travels in waves
  3. 6. Fusion or Fission
  4. 9. Rays
  5. 11. Taking in and using the vibration energy
  6. 13. see-through
  7. 15. Bending of light
  8. 16. Hight