waves

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