Hearing Aid Academy Final Quiz-1
WITH CORRRECT ANSWERS
2025<2026
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
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:
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:
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:
WITH CORRRECT ANSWERS
2025<2026
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
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:
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:
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:
