Deafening Sound: Extra Stuff -- Your DS IQ

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Please mark one response to each of the questions below. A popup window will appear to give you immediate feedback. Click the "check iq" button at the bottom of the page to to see how many questions you've answered correctly. A raft of trusty smiley faces will show you which answers were correct and which were not. To start over, click the "try again" button.

1.
When loud sounds in your environment cause a decrease in hearing sharpness, this is called:
Hearing impairment
Noise-induced hearing loss
Simonsen's Syndrome
Tinnitus

2. The human ear can distinguish sounds in which frequency range:
0 - 108 Hz
100 - 100,000 Hz
20 - 20,000 Hz
500 - 60,000 Hz

3. The threshhold for noise which can damage your hearing is usually considered to be about:
50 dB
85 dB
100 dB
212 dB

4. A decrease in loudness from 105 dB to 100 dB would reduce the risk of hearing damage by:
5%
25%
50%
100% louder

5. Hearing protection is measured according to a scale referred to as its:
Increased Sound Protection (ISP)
Noise Protection Index (NPI)
Noise Reduction Rating (NRR)
Sound Limiting Capability (SLC)

6. Which of the following groups is charged with protecting you from hearing damage while you are working:
IHOP
IPOH
NIHL
NIOSH

7. A medical doctor specializing in the treatment of only the ears is call a/an:
Audiologist
Ophthamlologist
Otologist
Rhinologist

8. Hearing damage in humans is:
Irreversible
Often reversible
Reversible
Seldom reversible

9. When you start to develop a noise-induced hearing loss, it is because the noise has:
Damaged nerve endings in the inner ear
Partially or totally ruptured in the eardrum
Damaged the small bones in the middle ear
Partially or totally destroyed the auditory nerve

10. Ordinary conversation occurs at about the following decibel level:
40 dB
60 dB
85 dB
110 dB

Your DS IQ is:

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