Waves but no sea around!!

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Across
  1. 2. Longitudinal waves are made of compressions and ____________________.
  2. 5. This is the time for 1 wave.
  3. 8. Wave transfers __________________ from one place to another within a material.
  4. 9. In this wave the direction of vibration is at right angle to the direction of the wave.
  5. 11. Transverse wave is made up of ______________ and troughs.
Down
  1. 1. In longitudinal wave the direction of vibration is _______________ to the direction of the wave.
  2. 3. Maximum displacement of a wave from its rest position.
  3. 4. Number of waves passing through a point in 1 second.
  4. 6. This is the distance between 2 crests or 2 troughs.
  5. 7. Frequency is measured in this unit.
  6. 10. This wave is an example of longitudinal wave.