Waves

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Across
  1. 4. matter through which a mechanical wave can travel
  2. 7. Particles move both parallel and perpendicular to the motion of the wave and their motion becomes circular
  3. 8. Low pressure area
  4. 9. The distance from one crest to another
  5. 11. Particles bunch together and then spread apart as the sound energy moves through the matter
Down
  1. 1. The particles of the medium vibrate in a direction parallel to the direction that the wave moves
  2. 2. The distance from the midpoint to the height of a crest
  3. 3. High pressure area
  4. 5. The particles of the medium vibrate in a direction that the wave moves
  5. 6. disturbances that transmit energy through matter
  6. 10. The number of crests that pass a certain point in a given amount of time