Occupational Hygiene Practice Test

Acoustic trauma results in damage to the ear from a sharply rising wave front. Which statement is true?

False Not applicable Partially true True

Correct Answer:

True

Explanation:

Acoustic trauma is caused by very high-intensity, impulsive sounds that deliver a sudden, rapid change in pressure. A sharply rising wave front means the sound pressure jumps quickly to a peak, concentrating energy into a very short moment. That abrupt force places mechanical stress on the ear’s structures—the tympanic membrane, the tiny ossicles, and the delicate hair cells in the cochlea—often causing damage even if the total energy isn’t extremely high. The rapid rise time generates higher peak forces and strain rates, making injury more likely than with a gradual or longer-lasting sound. Because of this, the statement is true: acoustic trauma results from damage driven by a sharply rising wave front.

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