Waves

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Across
  1. 3. any matter that waves travel through
  2. 4. waves that move parallel (back and forth)
  3. 9. waves that move perpendicular (up/down)
  4. 10. waves that can travel through a vacuum
Down
  1. 1. waves that must travel through a medium
  2. 2. the height of a wave
  3. 5. the number of waves that pass a certain point
  4. 6. carries energy
  5. 7. the distance between the crests of two waves
  6. 8. the peak (or top) of a wave
  7. 9. the lowest point of a wave