Bat Calls Approach 140 DB, and Dolphin Calls May Exceed

question 42

Multiple Choice

Bat calls approach 140 dB, and dolphin calls may exceed 200 dB.What happens when human beings are in close proximity to these very loud calls?

• A)Human beings can damage their ears because of the high amplitude of the sounds.
• B)Human beings remain unaware of the calls because the frequencies being used are out of the human range of hearing.
• C)Human beings sense pain, but their hearing is not damaged because the calls are so short.
• D)Human being contract their tensor tympani muscles to dampen the sounds.

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