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Quiz von JanaLee Moses, aktualisiert more than 1 year ago
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Erstellt von JanaLee Moses
vor fast 7 Jahre
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Frage 1
Frage
A region of high molecular density and high air pressure is called a _____________________.
Antworten
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compression
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rarefaction
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vibration
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wave
Frage 2
Frage
Sound waves are ________________.
Antworten
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longitudinal
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transverse
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sine waves
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electromagnetic waves
Frage 3
Frage
Frequency is defined as what?
Antworten
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The number of cycles per unit of time
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The amount of time per cycle.
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The same as velocity.
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The distance between cycles of a wave.
Frage 4
Frage
With sound, frequency determines _______________.
Antworten
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pitch
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color
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loudness
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intensity
Frage 5
Frage
Sound waves can travel through which of the following? (Select ALL that apply)
Antworten
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Solids
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Liquids
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Gases
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Empty space
Frage 6
Frage
The speed of down depends on both the ___________ and ____________ of the medium.
Antworten
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type, temperature
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type, harmonics
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temperature, harmonics
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harmonics, velocity
Frage 7
Frage
Sound waves can be approximated as __________.
Antworten
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spherical
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conical
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sine waves
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cubic
Frage 8
Frage
As the source of a sound approaches you, the pitch of the sound seems to ___________.
Antworten
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be higher
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be lower
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remain the same
Frage 9
Frage
Because of the Doppler Effect, when a sound source is moving away from you, the frequency seems to ____________ although it actually ____________.
Antworten
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lessen, remains the same
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become greater, remains the same
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remain the same, lessens
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remain the same, becomes greater
Frage 10
Frage
As a soundboard vibrates back and forth, its _________ is converted into sound waves.
Antworten
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kinetic energy
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potential energy
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harmonics
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intensity
Frage 11
Frage
Intensity is the rate of _________ through a given area.
Antworten
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energy flow
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harmonics
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speed
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frequency
Frage 12
Frage
__________ and __________ determine which sounds are audible.
Antworten
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Intensity, frequency
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Intensity, decibels
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Frequency, velocity
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Velocity, decibles
Frage 13
Frage
The unit for the decibel is __________.
Antworten
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(none)
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dB
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db
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W/m^2
Frage 14
Frage
Sympathetic vibrations occur when _______.
Antworten
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vibrations are transferred from one object to another
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an object vibrates at its natural frequency
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a vibration is amplified
Frage 15
Frage
Vibration at the natural frequency produces _____________.
Antworten
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resonance
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intensity
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the Doppler Effect
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compressions
Frage 16
Frage
In 1940, a bridge collapsed due to an issue with ___________.
Antworten
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resonanace
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intensity
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the Doppler Effect
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impulses
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