ASLP 3030 exam 1 2025 Questions and
Answers
What is acoustic? - --CORRECT ANSWER--Acoustics refers to the scientific
study of sound waves in terms of how it is generated and transmitted.
Why do we study wave motions and oscillation in acoustics? - --CORRECT
ANSWER--We study the properties of wave motion and oscillation in order to
have a precise understanding of sound waves and their characteristics.
What are the essential properties of sound source and sound medium? - --
CORRECT ANSWER--Mass and elasticity
-Elasticity is the ability of an object to return to its original form after being
stretched or compressed.
The sound source and sound medium are independent of each other. Sound
source is the sound generator (example, a tuning fork). Sound medium is the
sound carrier (example,
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, the air or helium). The frequency and period of a sound are determined by the
properties of the source. The speed of sound transmission is determined by the
properties of the medium.
How do sound waves propagate? - --CORRECT ANSWER--When set into
motion, air molecules oscillate back and forth about their equilibrium positions,
causing adjacent air molecules to move closer together and air pressure to increase
(condensation) and then move further apart causing air pressure to decrease
(rarefaction). It is the disturbance which travels, not the individual air particles in
the medium. Sound waves propagate in a spherical, longitudinal fashion
What do amplitude, frequency and period of sound mean? - --CORRECT
ANSWER--Amplitude refers to the displacement of particles during vibration. It is
related to sound
pressure and intensity.
Frequency refers to how many cycles per second the vibration takes place.
Period refers to the amount of time to complete one cycle of vibration.
Period (in seconds) is the inverse of frequency (in Hertz).
Period (Ts) = 1/Frequency (Hz)
Frequency (Hz) = 1/Ts (Period in seconds)
If the period is in seconds, frequency is in Hertz
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Answers
What is acoustic? - --CORRECT ANSWER--Acoustics refers to the scientific
study of sound waves in terms of how it is generated and transmitted.
Why do we study wave motions and oscillation in acoustics? - --CORRECT
ANSWER--We study the properties of wave motion and oscillation in order to
have a precise understanding of sound waves and their characteristics.
What are the essential properties of sound source and sound medium? - --
CORRECT ANSWER--Mass and elasticity
-Elasticity is the ability of an object to return to its original form after being
stretched or compressed.
The sound source and sound medium are independent of each other. Sound
source is the sound generator (example, a tuning fork). Sound medium is the
sound carrier (example,
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, the air or helium). The frequency and period of a sound are determined by the
properties of the source. The speed of sound transmission is determined by the
properties of the medium.
How do sound waves propagate? - --CORRECT ANSWER--When set into
motion, air molecules oscillate back and forth about their equilibrium positions,
causing adjacent air molecules to move closer together and air pressure to increase
(condensation) and then move further apart causing air pressure to decrease
(rarefaction). It is the disturbance which travels, not the individual air particles in
the medium. Sound waves propagate in a spherical, longitudinal fashion
What do amplitude, frequency and period of sound mean? - --CORRECT
ANSWER--Amplitude refers to the displacement of particles during vibration. It is
related to sound
pressure and intensity.
Frequency refers to how many cycles per second the vibration takes place.
Period refers to the amount of time to complete one cycle of vibration.
Period (in seconds) is the inverse of frequency (in Hertz).
Period (Ts) = 1/Frequency (Hz)
Frequency (Hz) = 1/Ts (Period in seconds)
If the period is in seconds, frequency is in Hertz
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