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Hearing Safety: Understanding Noise Hazards – SS1056IE (10 Min.)

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1

Noise-induced hearing loss is permanent and cannot be reversed.

True
False

2

OSHA requires a formal Hearing Conservation Program only when noise exposure reaches 90 dB over an 8-hour shift.

True
False

3

If you have to shout to be heard three feet away, the noise level is likely hazardous.

True
False

4

Foam earplugs must be inserted correctly to provide effective protection.

True
False

5

The Noise Reduction Rating (NRR) always reflects the exact amount of protection you’ll get in real workplace conditions.

True
False

6

Audiometric testing helps detect early changes in hearing and is part of hearing conservation efforts.

True
False

7

OSHA’s Hearing Conservation Program must be implemented when worker noise exposure is at or above:

75 dB
85 dB
95 dB
100 dB

8

Which of the following best describes how loud noise damages the ear?

Loosens the eardrum temporarily
Destroys tiny hair cells in the inner ear
Causes earwax buildup
Improves hearing over time

9

When estimating real-world protection from hearing protectors, safety professionals typically:

Use the full labeled NRR
Derate the NRR by about 50%
Ignore the NRR completely
Double the NRR

10

Which type of hearing protection fits completely over the ear?

Foam earplugs
Canal caps
Earmuffs
None of the above