The Auditory System

Directions:
Select the BEST response alternative for each of the questions below.

	1.	Sound travels faster in air than underwater, and this is why it is so hard to localize sound underwater.
		A)	True.
		B)	False.
	2.	Pitch is the perceptual correlate of the amplitude of the sound waves.
		A)	True.
		B)	False.
	3.	Extremely loud sound measuring over 150 decibels may cause hearing loss.
		A)	True.
		B)	False.
	4.	Children and young adults can hear over a range from about 20 to 20,000 Hz, but as adults age, they tend to lose hearing in high frequencies.
		A)	True.
		B)	False.
	5.	Harmonics are the higher frequencies present in a complex sound that are integer multiples of the fundamental frequency.
		A)	True.
		B)	False.
	6.	The fundamental frequency is the highest frequency in a complex sound, which determines the perceived timbre of that sound.
		A)	True.
		B)	False.
	7.	The tympanic membrane is the thin elastic sheet that vibrates in response to sounds coming through the external auditory canal; commonly known as the eardrum.
		A)	True.
		B)	False.
	8.	The basilar membrane refers to the fibers that separate the tympanic canal from the middle canal; the organ of Corti lies on the basilar membrane.
		A)	True.
		B)	False.
	9.	The organ of Corti is the structure along the basilar membrane that contains the hair cells that transduce sound into a neural signal.
		A)	True.
		B)	False.
	10.	Conductive hearing loss is permanent hearing loss caused by damage to the cochlea or auditory nerve.
		A)	True.
		B)	False.

Your score out of 100%: %

The correct answers are marked by a "C" in the box before each question. The incorrect questions are marked by an "X".