Sound Waves

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Across
  1. 2. The size of a wave, which relates to how loud a sound is.
  2. 4. The distance between two matching points on a wave, such as two compressions.
  3. 8. The number of complete waves passing a point each second, measured in hertz (Hz).
  4. 9. A sound that bounces off a surface and is heard again.
Down
  1. 1. The part of a longitudinal wave where particles are close together.
  2. 3. A technology that uses sound waves and echoes to detect objects or measure the depth of the ocean.
  3. 5. wave A wave in which particles vibrate back and forth in the same direction as the wave travels.
  4. 6. wave A wave in which particles vibrate at right angles to the direction the wave travels.
  5. 7. The part of a longitudinal wave where particles are spread further apart.