waves

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Across
  1. 3. the spreading of waves around obstacles
  2. 4. highest point of a wave
  3. 5. lowest point of a wave
  4. 9. what we use to hear
  5. 10. a wave vibrating in the direction of propagation.
  6. 13. bending of a wave going trough a new medium
  7. 15. cycles per second
  8. 16. what we use to see
Down
  1. 1. distance between crests of a wave
  2. 2. the velocity of an wave
  3. 4. occurs when the matching vibrations of another object increase the amplitude of an object's oscillations
  4. 6. wave bouncing off of an object
  5. 7. the effect caused by a moving object sending out waves and them getting compressed or stretched
  6. 8. specifies the orientation of waves
  7. 11. a wave vibrating at right angles to the direction of its propagation.
  8. 12. the max displacement from the middle of a wave
  9. 14. length of time for one wave cycle