Sound and waves

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Across
  1. 3. Distance/time
  2. 4. Light changing medium
  3. 5. Sound bouncing off surface
  4. 7. carries sound info to brain
  5. 10. Sounds move through fastest
  6. 11. vibrates inside ear
  7. 12. Vibrations moving through a substance
Down
  1. 1. Energy of wave moves up and down
  2. 2. compression and refraction
  3. 6. Sounds move slowest through this
  4. 8. Light changing direction
  5. 9. Sound cannot move through