Sound and Light energy

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Across
  1. 2. What is the taking in of light or sound?
  2. 4. What can sound travel through?
  3. 6. What is the number of vibrations a wave has in a given time?
  4. 7. What is the bouncing back of waves off a surface?
  5. 9. What is the distance that any point on the wave is moved from its resting place?
  6. 11. What can light travel through?
  7. 13. What word can describe what substance will not allow light to pass through it?
  8. 14. Sound uses what kind of mechanical energy?
Down
  1. 1. Sound travels 340 meters per second depending on _________ and air temperature.
  2. 3. What word describe what cannot be clearly seen when light is scattered?
  3. 5. What kind of energy is light?
  4. 8. What word can describe what light can travel through without being scattered?
  5. 10. Light travels 300 million _________ per hour?
  6. 12. What is the bending of light?