JanaLee Moses
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From Ch 12 Sections 1-2 of Holt Physics 0-03-073549-1

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JanaLee Moses
Created by JanaLee Moses almost 7 years ago
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Sound Quiz 1

Question 1 of 16

1

A region of high molecular density and high air pressure is called a _____________________.

Select one of the following:

  • compression

  • rarefaction

  • vibration

  • wave

Explanation

Question 2 of 16

1

Sound waves are ________________.

Select one of the following:

  • longitudinal

  • transverse

  • sine waves

  • electromagnetic waves

Explanation

Question 3 of 16

1

Frequency is defined as what?

Select one of the following:

  • The number of cycles per unit of time

  • The amount of time per cycle.

  • The same as velocity.

  • The distance between cycles of a wave.

Explanation

Question 4 of 16

1

With sound, frequency determines _______________.

Select one of the following:

  • pitch

  • color

  • loudness

  • intensity

Explanation

Question 5 of 16

1

Sound waves can travel through which of the following? (Select ALL that apply)

Select one or more of the following:

  • Solids

  • Liquids

  • Gases

  • Empty space

Explanation

Question 6 of 16

1

The speed of down depends on both the ___________ and ____________ of the medium.

Select one of the following:

  • type, temperature

  • type, harmonics

  • temperature, harmonics

  • harmonics, velocity

Explanation

Question 7 of 16

1

Sound waves can be approximated as __________.

Select one of the following:

  • spherical

  • conical

  • sine waves

  • cubic

Explanation

Question 8 of 16

1

As the source of a sound approaches you, the pitch of the sound seems to ___________.

Select one of the following:

  • be higher

  • be lower

  • remain the same

Explanation

Question 9 of 16

1

Because of the Doppler Effect, when a sound source is moving away from you, the frequency seems to ____________ although it actually ____________.

Select one of the following:

  • lessen, remains the same

  • become greater, remains the same

  • remain the same, lessens

  • remain the same, becomes greater

Explanation

Question 10 of 16

1

As a soundboard vibrates back and forth, its _________ is converted into sound waves.

Select one of the following:

  • kinetic energy

  • potential energy

  • harmonics

  • intensity

Explanation

Question 11 of 16

1

Intensity is the rate of _________ through a given area.

Select one of the following:

  • energy flow

  • harmonics

  • speed

  • frequency

Explanation

Question 12 of 16

1

__________ and __________ determine which sounds are audible.

Select one of the following:

  • Intensity, frequency

  • Intensity, decibels

  • Frequency, velocity

  • Velocity, decibles

Explanation

Question 13 of 16

1

The unit for the decibel is __________.

Select one of the following:

  • (none)

  • dB

  • db

  • W/m^2

Explanation

Question 14 of 16

1

Sympathetic vibrations occur when _______.

Select one of the following:

  • vibrations are transferred from one object to another

  • an object vibrates at its natural frequency

  • a vibration is amplified

Explanation

Question 15 of 16

1

Vibration at the natural frequency produces _____________.

Select one of the following:

  • resonance

  • intensity

  • the Doppler Effect

  • compressions

Explanation

Question 16 of 16

1

In 1940, a bridge collapsed due to an issue with ___________.

Select one of the following:

  • resonanace

  • intensity

  • the Doppler Effect

  • impulses

Explanation

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