Sound waves

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Across
  1. 3. A type of wave
  2. 6. What causes sound waves
  3. 7. waves Another name for longitudinal waves
  4. 9. When air molecules are far apart
  5. 10. what sound waves need to travel through
Down
  1. 1. Type of wave that a sound wave is
  2. 2. When air molecules are close together
  3. 4. pitch High Frequency
  4. 5. pitch Low frequency
  5. 8. a sound wave can't travel through