sound

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Across
  1. 2. the maximum displacement from the mean position
  2. 6. related to amplitude
  3. 7. the length of one complete wave
Down
  1. 1. The oscillations are parallel to the direction of energy transfer
  2. 3. related to frequency
  3. 4. reflection of sound
  4. 5. The number of oscillation in one second
  5. 8. The oscillations are perpendicular to the direction of energy transfer