Sound Quiz 1

JanaLee Moses
Quiz by JanaLee Moses, updated more than 1 year ago
JanaLee Moses
Created by JanaLee Moses over 3 years ago
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Description

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

Resource summary

Question 1

Question
A region of high molecular density and high air pressure is called a _____________________.
Answer
  • compression
  • rarefaction
  • vibration
  • wave

Question 2

Question
Sound waves are ________________.
Answer
  • longitudinal
  • transverse
  • sine waves
  • electromagnetic waves

Question 3

Question
Frequency is defined as what?
Answer
  • 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.

Question 4

Question
With sound, frequency determines _______________.
Answer
  • pitch
  • color
  • loudness
  • intensity

Question 5

Question
Sound waves can travel through which of the following? (Select ALL that apply)
Answer
  • Solids
  • Liquids
  • Gases
  • Empty space

Question 6

Question
The speed of down depends on both the ___________ and ____________ of the medium.
Answer
  • type, temperature
  • type, harmonics
  • temperature, harmonics
  • harmonics, velocity

Question 7

Question
Sound waves can be approximated as __________.
Answer
  • spherical
  • conical
  • sine waves
  • cubic

Question 8

Question
As the source of a sound approaches you, the pitch of the sound seems to ___________.
Answer
  • be higher
  • be lower
  • remain the same

Question 9

Question
Because of the Doppler Effect, when a sound source is moving away from you, the frequency seems to ____________ although it actually ____________.
Answer
  • lessen, remains the same
  • become greater, remains the same
  • remain the same, lessens
  • remain the same, becomes greater

Question 10

Question
As a soundboard vibrates back and forth, its _________ is converted into sound waves.
Answer
  • kinetic energy
  • potential energy
  • harmonics
  • intensity

Question 11

Question
Intensity is the rate of _________ through a given area.
Answer
  • energy flow
  • harmonics
  • speed
  • frequency

Question 12

Question
__________ and __________ determine which sounds are audible.
Answer
  • Intensity, frequency
  • Intensity, decibels
  • Frequency, velocity
  • Velocity, decibles

Question 13

Question
The unit for the decibel is __________.
Answer
  • (none)
  • dB
  • db
  • W/m^2

Question 14

Question
Sympathetic vibrations occur when _______.
Answer
  • vibrations are transferred from one object to another
  • an object vibrates at its natural frequency
  • a vibration is amplified

Question 15

Question
Vibration at the natural frequency produces _____________.
Answer
  • resonance
  • intensity
  • the Doppler Effect
  • compressions

Question 16

Question
In 1940, a bridge collapsed due to an issue with ___________.
Answer
  • resonanace
  • intensity
  • the Doppler Effect
  • impulses
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