waves properties and bevahiors

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Across
  1. 4. waves cancel each other out
  2. 7. propagates as both electrical and magnetic waves
  3. 8. mediums vibration is parallel to the direction of the wave
  4. 11. number of waves
  5. 13. distance the wave travels
  6. 14. change in direction of a wave passing from one medium to another
  7. 15. range of all types of em radiation
Down
  1. 1. distance between identical points
  2. 2. production of an image
  3. 3. combine to create a larger wave
  4. 5. maximum displacement of points on a wave
  5. 6. vibrates at right angles to the direction of its propagation
  6. 9. spreading out of waves
  7. 10. substance that transfers energy
  8. 12. produced by a moving source with respect to an observer