Waves

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Across
  1. 6. the distance between identical points
  2. 7. the pattern of disturbance caused by the movement of energy traveling through a medium
  3. 8. the lowest part
  4. 10. a substance or material that can carry a wave
  5. 12. motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance
  6. 13. a change in direction of waves when they bounce off a barrier
Down
  1. 1. not able to be seen through
  2. 2. light
  3. 3. top of the wave
  4. 4. an electromagnetic wave which travels through the vacuum of outer space
  5. 5. the waves where the displacement of the medium is in the same direction as the direction of the travel of the wave
  6. 9. distance from rest to crest
  7. 11. a change in the direction of waves as they pass from one medium to another