Sounds

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Across
  1. 2. sounds is produced when object ...
  2. 5. sounds can't travel through...
  3. 7. sound travel faster in humid air, than in dry air.
  4. 9. when the speed of the sound decrease, it also decreases.
  5. 10. type of waves for sounds.
Down
  1. 1. sound need this to travel.
  2. 3. factor that affect the speed of sound.
  3. 4. medium in which sounds travel slowest.
  4. 6. this structure transforms sound from vibration into electrical impulse.
  5. 8. medium in which sounds travel fastest.