CAOHC Exam review 2024 LATEST
UPDATE
Elements to an effective hearing program? - ANSWER hearing protection, record
keeping, training, noise monitoring and control
In addition to noise, ____ exposure can be caused by sensorineral hearing loss? -
ANSWER Ototoxicant
Intensity is measured in ____ - ANSWER decibels (dB)
Frequency is measured in ___ - ANSWER Hz (Hertz)
Functions of the outer ear - ANSWER collects sound waves and enhances high
frequency sounds
Functions of the middle - ANSWER transforms sound to mechanical energy
The three bones in the ear that help with hearing are the ___, _____, and the ___ -
ANSWER Incus, Malleus, and Stapes
Human hearing range at birth - ANSWER 20-20000 Hz
What causes sensorineural hearing loss? - ANSWER
When hearing is only available in one ear and not the other is called ____ hearing loss -
ANSWER Unilateral
Type S (limited function) offers - ANSWER lower accuracy with limited function
What is impulse/impact noise? - ANSWER
What part of the ear is shaped like a snail? - ANSWER The cochlea
OSHA defines 100% noise dose as - ANSWER 90dB(A)
IF the retest does not confirm the STS, ____ are no longer mandatory if TWA is 85-
89dB(A) - ANSWER hearing protective devices
What is intermittent noise? - ANSWER
What is Continuous noise? - ANSWER
Adding a muffler to an engine is an example of _____ control - ANSWER engineering
, Sound level meters and dosimeters should be calibrated - ANSWER yearly
What part of the ear does hearing loss affect? - ANSWER Inner ear (cochlea)
_____ controls such as making changes in the workplace or scheduling that reduces
the worker's exposure to noise - ANSWER Administrative
Type I (precison) of SLMs - ANSWER offer the greatest accuracy
A baseline audiogram has to be obtained no later than ____ - ANSWER 6 months after
inital exposure
What does SLM (sound level meter) measure? - ANSWER current sound levels at a
specific location
A technician might adjust the output of an audiometer during _____ - ANSWER
exhaustive calibration
If a noisy water pump's noise occurs in BURSTS, that would be considered a ______
noise - ANSWER Intermittent
Problems within the outer or middle ear generally cause ____ hearing loss - ANSWER
conductive
What is the familiarization? - ANSWER presenting the tone at 30dBHL, awaiting a
response
The outer ear consists of the ____ and ____ - ANSWER pinna and ear canal
Intensity/Amplitude is related to - ANSWER loudness
The doubling of sound increases the intensity level by - ANSWER 3dB
dB SPL (sound pressure level) is used to measure - ANSWER sound pressure
dB(A) is used to measure - ANSWER worker noise exposure in a hearing conservation
program
dB(C) is used by hearing protection manufacturers to - ANSWER test the attentuation of
hearing protectors
The average hearing threshold for young, normal adults - ANSWER 0dB
This dB is used to calibrate audiometers - ANSWER 0dB
UPDATE
Elements to an effective hearing program? - ANSWER hearing protection, record
keeping, training, noise monitoring and control
In addition to noise, ____ exposure can be caused by sensorineral hearing loss? -
ANSWER Ototoxicant
Intensity is measured in ____ - ANSWER decibels (dB)
Frequency is measured in ___ - ANSWER Hz (Hertz)
Functions of the outer ear - ANSWER collects sound waves and enhances high
frequency sounds
Functions of the middle - ANSWER transforms sound to mechanical energy
The three bones in the ear that help with hearing are the ___, _____, and the ___ -
ANSWER Incus, Malleus, and Stapes
Human hearing range at birth - ANSWER 20-20000 Hz
What causes sensorineural hearing loss? - ANSWER
When hearing is only available in one ear and not the other is called ____ hearing loss -
ANSWER Unilateral
Type S (limited function) offers - ANSWER lower accuracy with limited function
What is impulse/impact noise? - ANSWER
What part of the ear is shaped like a snail? - ANSWER The cochlea
OSHA defines 100% noise dose as - ANSWER 90dB(A)
IF the retest does not confirm the STS, ____ are no longer mandatory if TWA is 85-
89dB(A) - ANSWER hearing protective devices
What is intermittent noise? - ANSWER
What is Continuous noise? - ANSWER
Adding a muffler to an engine is an example of _____ control - ANSWER engineering
, Sound level meters and dosimeters should be calibrated - ANSWER yearly
What part of the ear does hearing loss affect? - ANSWER Inner ear (cochlea)
_____ controls such as making changes in the workplace or scheduling that reduces
the worker's exposure to noise - ANSWER Administrative
Type I (precison) of SLMs - ANSWER offer the greatest accuracy
A baseline audiogram has to be obtained no later than ____ - ANSWER 6 months after
inital exposure
What does SLM (sound level meter) measure? - ANSWER current sound levels at a
specific location
A technician might adjust the output of an audiometer during _____ - ANSWER
exhaustive calibration
If a noisy water pump's noise occurs in BURSTS, that would be considered a ______
noise - ANSWER Intermittent
Problems within the outer or middle ear generally cause ____ hearing loss - ANSWER
conductive
What is the familiarization? - ANSWER presenting the tone at 30dBHL, awaiting a
response
The outer ear consists of the ____ and ____ - ANSWER pinna and ear canal
Intensity/Amplitude is related to - ANSWER loudness
The doubling of sound increases the intensity level by - ANSWER 3dB
dB SPL (sound pressure level) is used to measure - ANSWER sound pressure
dB(A) is used to measure - ANSWER worker noise exposure in a hearing conservation
program
dB(C) is used by hearing protection manufacturers to - ANSWER test the attentuation of
hearing protectors
The average hearing threshold for young, normal adults - ANSWER 0dB
This dB is used to calibrate audiometers - ANSWER 0dB
