waves

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Across
  1. 2. the lowest point in a wave
  2. 3. the highest point in a wave
  3. 5. the area in a Longitudinal wave where the particles are farthest apart
  4. 7. parallel to the direction of the wave
  5. 8. the distance from one crest of wave to the next
Down
  1. 1. the area in a longitudinal wave where the particles are closest together
  2. 4. perpendicular to the direction of the wave
  3. 6. the distance from the rest position to the crest