Physics crosswords

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Across
  1. 2. Change in direction of a wave passing from one medium to another caused by its change in speed
  2. 5. The superposition of waves, causing an increase or decrease in the amplitude of the resulting wave
  3. 7. Distance over which the wave's shape repeats
  4. 9. Application of power, pressure, or exertion against an object that causes it to become squeezed, squashed, or compacted
  5. 11. The time it takes for two successive crests to pass a specified point
  6. 12. The distance traveled by a given point on a wave in a given interval of time
  7. 13. Number of waves that pass a given point in one second
  8. 15. Waves in which the direction of propagation aligns with the direction of vibration of the medium
Down
  1. 1. Reduction of an item's density
  2. 3. Propagating dynamic disturbance of one or more quantities.
  3. 4. Motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance
  4. 6. Measurement of the amount of energy transferred by a wave
  5. 8. Lowest part of the wave
  6. 10. Highest part of the wave
  7. 14. Change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated