Speech and Hearing Sciences: ASLP
3030 Exam Questions and Answers
100% Pass
Sound is what kind of energy? - ✔✔Acoustic energy
Energy is transmitted by what type of wave? - ✔✔Pressure waves
What creates pressure waves? - ✔✔Force applied to a sound source
What is energy? - ✔✔Oscillating particles that travel through a medium
Brownian Motion - ✔✔Constant movement of air molecules in a random
pattern
Sound cannot exist... - ✔✔In a vacuum
Changes in pressure are measured in - ✔✔Pascals (Pa)
A medium must... - ✔✔Have mass
Be elastic
Celerity (C) - ✔✔Swiftness, rapidity of motion or action (speed/velocity)
Speed of Sound in Air - ✔✔343 m/s at
, 20 degrees C
Elasticity - ✔✔The ability of the object to return to its original form after
being stressed or compressed
Speed of Propagation - ✔✔Speed at which a wave moves through a
medium
The speed of propagation does what as the air gets colder? - ✔✔Slows
down
Supersonic - ✔✔Speed faster than the speed of sound
Subsonic - ✔✔Speed slower than the speed of sound
Range of Human Hearing - ✔✔20-20,000 Hz
Ultrasound - ✔✔Sound energy that is too high for humans to perceive as
sound
Infrasound - ✔✔Sound energy below human perception
Simple Harmonic Motion (SHM) - ✔✔Any (repeated) periodic motion (back
and forth) with a restoring force proportional to displacement
Compression - ✔✔The part of a longitudinal wave where the particles of
the medium are close together
3030 Exam Questions and Answers
100% Pass
Sound is what kind of energy? - ✔✔Acoustic energy
Energy is transmitted by what type of wave? - ✔✔Pressure waves
What creates pressure waves? - ✔✔Force applied to a sound source
What is energy? - ✔✔Oscillating particles that travel through a medium
Brownian Motion - ✔✔Constant movement of air molecules in a random
pattern
Sound cannot exist... - ✔✔In a vacuum
Changes in pressure are measured in - ✔✔Pascals (Pa)
A medium must... - ✔✔Have mass
Be elastic
Celerity (C) - ✔✔Swiftness, rapidity of motion or action (speed/velocity)
Speed of Sound in Air - ✔✔343 m/s at
, 20 degrees C
Elasticity - ✔✔The ability of the object to return to its original form after
being stressed or compressed
Speed of Propagation - ✔✔Speed at which a wave moves through a
medium
The speed of propagation does what as the air gets colder? - ✔✔Slows
down
Supersonic - ✔✔Speed faster than the speed of sound
Subsonic - ✔✔Speed slower than the speed of sound
Range of Human Hearing - ✔✔20-20,000 Hz
Ultrasound - ✔✔Sound energy that is too high for humans to perceive as
sound
Infrasound - ✔✔Sound energy below human perception
Simple Harmonic Motion (SHM) - ✔✔Any (repeated) periodic motion (back
and forth) with a restoring force proportional to displacement
Compression - ✔✔The part of a longitudinal wave where the particles of
the medium are close together
