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Q: The part of the ear where sound wave compressions and rarefactions cause the eardrum to vibrate is the A. outer ear. B. inner ear. C. auditory nerve. D. middle ear.
A: The answer is C -- the middle ear. The outer ear focuses sound waves, but the middle ear is the part that causes the eardrum to vibrate. [ The inner ear and 8th nerve are involved in turning mechanical energy into electrical energy (for things like pitch discrimination). ]
Expert answered|t3A|Points 246|
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Asked 8/17/2011 10:40:28 PM
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