CAOHC Exam Prep Guide with Questions and Correct Answers

hertz is a unit of: - sound frequency decibel is a unit of: - sound intensity the frequency of sound is perceived as: - pitch what is the first thing you should do when fitting earplugs? - a. pull the top of the ear to align the ear canal b. roll the earplug down into a tight, crease-free cylinder c. CHECK THE EAR CANAL FOR ANY OCCLUSIONS d. insert the earplug deep into the ear canal hearing tests do not have to be conducted in a sound booth as long as maximum allowable ambient noise levels aren't exceeded: - true what type of hearing loss can be attributed to noise? - sensorineural what is the frequency range of speech sounds? - 250-4000 Hz OSHA requires exhaustive calibration if there is a deviation of greater than or equal to 15 dB: - true the range of normal hearing is: - 0-25 dB intermittent noise is noise that: - a. does not end b. FLUCTUATES IN SOUND LEVEL WITH PERIODIC INTERRUPTIONS OF RELATIVE QUIET c. rises continuously