Mechanical waves

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Across
  1. 5. of waves around obstacles
  2. 6. vibration perpendicular to energy direction
  3. 7. distance between two successive points on a wave
  4. 8. speed at which a wave travels
  5. 9. maximum displacement from rest position
  6. 10. time for one complete wave cycle
Down
  1. 1. wave from interference
  2. 2. vibration parallel to energy direction
  3. 3. number of complete waves passing a point per second
  4. 4. overlapping and combining