Problem: The part of the ear where sound wave compressions and rarefactions cause the eardrum to vibrate is the A. outer ear. B. auditory nerve. C. inner ear. D. middle ear.

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The sound enters the ear via the outer ear. It then travels through the ear canal.

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Problem Details

The part of the ear where sound wave compressions and rarefactions cause the eardrum to vibrate is the 

A. outer ear. 

B. auditory nerve. 

C. inner ear. 

D. middle ear.

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