REHS Exam: Noise Pollution with
verified answers to pass
Noise - correct answer ✔✔Unwanted sound
noise pollution - correct answer ✔✔Any unwanted, disturbing, or harmful sound that impairs or
interferes with hearing, causes stress, hampers concentration and work efficiency, or causes
accidents.
dBA scale - correct answer ✔✔Used for environmental monitoring
Weighted scale to simulate an attempt to measure the way human ear hears loudness
(amplitude) in normal situations
dBC scale - correct answer ✔✔an attempt to measure the way the human ear hears loudness in
noisy situations
dBD scale - correct answer ✔✔an attempt to measure and compare the effect of airplane noise
on the human ear
Noise threshold of pain - correct answer ✔✔120 dBA
OSHA Noise Limits - correct answer ✔✔action level: 8-hour time-weighted average of 85
decibels or a dose of 50%
workers are not permitted to be exposed to 8-hour TWA equal to or greater than 90 dBA
Mass Gathering Noise - correct answer ✔✔Should not exceed 70dBA
verified answers to pass
Noise - correct answer ✔✔Unwanted sound
noise pollution - correct answer ✔✔Any unwanted, disturbing, or harmful sound that impairs or
interferes with hearing, causes stress, hampers concentration and work efficiency, or causes
accidents.
dBA scale - correct answer ✔✔Used for environmental monitoring
Weighted scale to simulate an attempt to measure the way human ear hears loudness
(amplitude) in normal situations
dBC scale - correct answer ✔✔an attempt to measure the way the human ear hears loudness in
noisy situations
dBD scale - correct answer ✔✔an attempt to measure and compare the effect of airplane noise
on the human ear
Noise threshold of pain - correct answer ✔✔120 dBA
OSHA Noise Limits - correct answer ✔✔action level: 8-hour time-weighted average of 85
decibels or a dose of 50%
workers are not permitted to be exposed to 8-hour TWA equal to or greater than 90 dBA
Mass Gathering Noise - correct answer ✔✔Should not exceed 70dBA
