Chapter 6/7 Review

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Across
  1. 3. When the frequency is high, the _____ is short.
  2. 6. A material that lets no light through
  3. 9. When a wave is bounced into a new direction.
  4. 10. The number of waves in a given point of time.
  5. 11. A material that lets most light through
  6. 12. Sound or light? This type of wave does not need a medium to travel through
  7. 13. The frequency controls this in sound.
  8. 16. When a wave goes into a new medium and does not come out.
  9. 18. A wave that needs a medium to travel through
  10. 21. A material that lets some light through
Down
  1. 1. When the energy increases, the amplitude _____.
  2. 2. When the energy decreases, the frequency _____.
  3. 4. The amplitude controls this in sound.
  4. 5. A wave that does not need to a medium to travel through (Light)
  5. 7. Sound is this type of wave
  6. 8. When a wave goes into a new medium and changes speed.
  7. 14. Light is this type of wave
  8. 15. Both sound and light can go through a material, this is called...
  9. 17. This changes when a light wave enters a new medium.
  10. 19. Sound or light? This type of wave needs a medium to travel through
  11. 20. All waves carry this