12298349
Descrição
Quiz por JanaLee Moses, atualizado more than 1 year ago
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Criado por JanaLee Moses
quase 7 anos atrás
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Questão 1
Questão
A region of high molecular density and high air pressure is called a _____________________.
Responda
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compression
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rarefaction
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vibration
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wave
Questão 2
Questão
Sound waves are ________________.
Responda
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longitudinal
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transverse
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sine waves
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electromagnetic waves
Questão 3
Questão
Frequency is defined as what?
Responda
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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.
Questão 4
Questão
With sound, frequency determines _______________.
Responda
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pitch
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color
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loudness
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intensity
Questão 5
Questão
Sound waves can travel through which of the following? (Select ALL that apply)
Responda
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Solids
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Liquids
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Gases
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Empty space
Questão 6
Questão
The speed of down depends on both the ___________ and ____________ of the medium.
Responda
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type, temperature
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type, harmonics
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temperature, harmonics
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harmonics, velocity
Questão 7
Questão
Sound waves can be approximated as __________.
Responda
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spherical
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conical
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sine waves
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cubic
Questão 8
Questão
As the source of a sound approaches you, the pitch of the sound seems to ___________.
Responda
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be higher
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be lower
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remain the same
Questão 9
Questão
Because of the Doppler Effect, when a sound source is moving away from you, the frequency seems to ____________ although it actually ____________.
Responda
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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
Questão 10
Questão
As a soundboard vibrates back and forth, its _________ is converted into sound waves.
Responda
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kinetic energy
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potential energy
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harmonics
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intensity
Questão 11
Questão
Intensity is the rate of _________ through a given area.
Responda
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energy flow
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harmonics
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speed
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frequency
Questão 12
Questão
__________ and __________ determine which sounds are audible.
Responda
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Intensity, frequency
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Intensity, decibels
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Frequency, velocity
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Velocity, decibles
Questão 13
Questão
The unit for the decibel is __________.
Responda
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(none)
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dB
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db
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W/m^2
Questão 14
Questão
Sympathetic vibrations occur when _______.
Responda
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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
Questão 15
Questão
Vibration at the natural frequency produces _____________.
Responda
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resonance
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intensity
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the Doppler Effect
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compressions
Questão 16
Questão
In 1940, a bridge collapsed due to an issue with ___________.
Responda
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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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