The head can block some of the sound reaching one ear, which makes the sound more intense in one ear than the other. The brain can use this phenomenon—known as a sound shadow—to determine which of the following?
A) the frequency of the sound
B) the location of the sound's source
C) the loudness of the sound
D) what the sound is
Answer: B
Rationale: We can localize sound by using differences in the intensity in which sound is heard by both ears—a phenomenon known as a sound shadow. If the source of the sound is to your left, the left ear will experience the sound more intensely than the right because the right ear will be in the sound shadow.
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