Hearing loss

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Across
  1. 1. sound waves are always ____
  2. 3. areas where the particles are further apart
  3. 6. in the___ the wave gets amplified
  4. 8. areas where the particles are close together
  5. 9. what is the distance from compression to compression called
Down
  1. 2. when sounds travels, a ____ moves through the air molecules, causing them to vibrate
  2. 4. The part of the brain that processes the electrical impulses as sounds
  3. 5. the cochlea sends electrical ____ to the brain
  4. 7. air molecules collide with the ear drum and cause it to ____ at the same frequency