waves

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Across
  1. 4. wave that consists on oscillations occurring perpendicular
  2. 6. when 2 or more waves come together
  3. 7. these waves require a medium
  4. 9. bottom of the wave
  5. 10. distance from the rest position to the crest position
  6. 12. involves a change in the direction of waves as they pass from from one medium to another
  7. 13. occurs at any location along the medium where two interfering waves have displacement in the opposite direction
  8. 15. how long or how short the period is mesured in hertz
  9. 17. wave that travels along a medium as crest and trough
Down
  1. 1. 2 waves added together
  2. 2. when a wave hits an object and bonces off
  3. 3. top of the wave
  4. 5. change in frequency of a wave
  5. 8. waves which can travel through the vacuum of outer space
  6. 11. full cycle of a wave
  7. 13. change in direction of waves as they pass thorugh an opening or around a barrier
  8. 14. where some of the parts of the wave remain fixed and others vibrate
  9. 16. what the wave travels in