HEARING AID FINAL EXAM QUESTIONS & CORRECT
ANSWERS ALREADY GRADED A+ ACED
Indicate the medium or mediums through which sound CANNOT travel:
gas
vacuum
gas or solid
solid or liquid - CORRECT ANSWER >>>vacuum
How do sound waves travel:
in expanding spheres in all directions along the surface only in a vacuum all of
the above - CORRECT ANSWER >>>in expanding spheres in all directions
The branch of physics that deals with sound is:
audiology otology
acoustics
optometry -
CORRECT
ANSWER
>>>acoustics
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,The speed of sound waves in air at sea level is:
340 meters/second
1200 feet/second
900 miles/hour
1100 miles/hour - CORRECT ANSWER >>>340 meters/second
The number of times a vibrating body completes a pattern of compressions and rarefactions per
second is the:
frequency of a sound amplitude of a sound cycle of a sound wavelength
of a sound - CORRECT ANSWER >>>frequency of a sound
What do we call a sound that consists of only one frequency:
complex tone pure tone specific frequency sound all
of the above - CORRECT ANSWER >>>pure tone
What is the interval between two frequencies called
when the higher frequency is double the lower
frequency:
harmonic overtone octave fundamental -
CORRECT ANSWER >>>octave
The lowest frequency that makes up most complex sounds is:
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,usually the loudest said to predominate called the
fundamental frequency all of the above - CORRECT
ANSWER >>>all of the above
A graphic representation of the relative strengths of the harmonics of a complex tone is called a:
harmonic analysis line spectrum quality graph pitch
analysis all of the above - CORRECT ANSWER >>>line
spectrum
The decibel:
is an absolute measure of sound intensity
should never be qualified as a reference to a standard is used
only as a measure of hearing loss none of the above - CORRECT
ANSWER >>>none of the above
The tympanic membrane receives acoustic energy in the form of sound waves and changes it to:
mechanical energy hydraulic energy electro-chemical energy
kinetic energy - CORRECT ANSWER >>>mechanical energy
The sound of an approaching train can be heard through the rail before it can be heard through
the air because:
3|Page
, the train is in contact with the rail but not through the air
sound travels faster through the rail than through the air sound
will not travel through a steel rail
the frequency of sound is higher through the rail - CORRECT ANSWER >>>sound travels faster
through the rail than through the air
During rarefaction the molecules are:
closer together at a state of increased pressure
further apart at a state of increased pressure closer
together at a state of decreased pressure
further apart at a state of decreased pressure - CORRECT ANSWER >>>further apart at a state of
decreased pressure
A formant is:
a graph showing the amplitude and frequency of a complex sound the fundamental
frequency plus all harmonics a frequency region within which certain harmonics have
relatively large energy the relative strength of all frequencies in a complex sound -
CORRECT ANSWER >>>a frequency region within which certain harmonics have
relatively large energy
Where are the low frequencies analyzed in the cochlea:
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ANSWERS ALREADY GRADED A+ ACED
Indicate the medium or mediums through which sound CANNOT travel:
gas
vacuum
gas or solid
solid or liquid - CORRECT ANSWER >>>vacuum
How do sound waves travel:
in expanding spheres in all directions along the surface only in a vacuum all of
the above - CORRECT ANSWER >>>in expanding spheres in all directions
The branch of physics that deals with sound is:
audiology otology
acoustics
optometry -
CORRECT
ANSWER
>>>acoustics
1|Page
,The speed of sound waves in air at sea level is:
340 meters/second
1200 feet/second
900 miles/hour
1100 miles/hour - CORRECT ANSWER >>>340 meters/second
The number of times a vibrating body completes a pattern of compressions and rarefactions per
second is the:
frequency of a sound amplitude of a sound cycle of a sound wavelength
of a sound - CORRECT ANSWER >>>frequency of a sound
What do we call a sound that consists of only one frequency:
complex tone pure tone specific frequency sound all
of the above - CORRECT ANSWER >>>pure tone
What is the interval between two frequencies called
when the higher frequency is double the lower
frequency:
harmonic overtone octave fundamental -
CORRECT ANSWER >>>octave
The lowest frequency that makes up most complex sounds is:
2|Page
,usually the loudest said to predominate called the
fundamental frequency all of the above - CORRECT
ANSWER >>>all of the above
A graphic representation of the relative strengths of the harmonics of a complex tone is called a:
harmonic analysis line spectrum quality graph pitch
analysis all of the above - CORRECT ANSWER >>>line
spectrum
The decibel:
is an absolute measure of sound intensity
should never be qualified as a reference to a standard is used
only as a measure of hearing loss none of the above - CORRECT
ANSWER >>>none of the above
The tympanic membrane receives acoustic energy in the form of sound waves and changes it to:
mechanical energy hydraulic energy electro-chemical energy
kinetic energy - CORRECT ANSWER >>>mechanical energy
The sound of an approaching train can be heard through the rail before it can be heard through
the air because:
3|Page
, the train is in contact with the rail but not through the air
sound travels faster through the rail than through the air sound
will not travel through a steel rail
the frequency of sound is higher through the rail - CORRECT ANSWER >>>sound travels faster
through the rail than through the air
During rarefaction the molecules are:
closer together at a state of increased pressure
further apart at a state of increased pressure closer
together at a state of decreased pressure
further apart at a state of decreased pressure - CORRECT ANSWER >>>further apart at a state of
decreased pressure
A formant is:
a graph showing the amplitude and frequency of a complex sound the fundamental
frequency plus all harmonics a frequency region within which certain harmonics have
relatively large energy the relative strength of all frequencies in a complex sound -
CORRECT ANSWER >>>a frequency region within which certain harmonics have
relatively large energy
Where are the low frequencies analyzed in the cochlea:
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