CP Workbook
Sound
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Two major classes of waves are longitudinal and transverse. Sound waves are
longitudinal
transverse
The frequency of a sound signal refers to how frequently the vibrations occur. A high-frequency sound is heard at a high
pitch
wavelength
speed
The sketch below shows a snap shot of the compressions and rarefactions of the air in a tube as the sound moves toward the right. The dots represent molecules.
Using the ruler provided, the wavelength of the sound wave is measured to be
Compared to the wavelengths of high-pitched sounds, the wavelengths of low-pitched sounds are
long
short
Sound waves travel fastest in
solids
liquids
gases
... the same speed in each
The accepted value for the speed of sound in air is 331 m/s at 0ºC. The speed of sound in air increases 0.6 m/s for each Celsius degree above zero. Compute the speed of sound at the temperature of the room you are now in.
Refer to the following information for the next two questions.
Suppose you set your watch by the sound of the noon whistle from a factory 3 km away.
Compared to the correct time, your watch will be
It will differ from the correct time by
3 seconds
6 seconds
9 seconds
Refer to the following information for the next four questions.
Suppose a child's natural frequency of swinging is once each 4 seconds.
For maximum amplitude the man should push at a rate of once each
2 seconds
4 seconds
8 seconds
If the man in previous question pushes in the same direction twice as often, his pushes
will be effective
will not be effective
because
the swing will be pushed twice as often in the right direction
every other push will oppose the motion of the swing
Based on this swing example, a 440 hz-tuning fork could NOT be forced into vibration by a sound of
220 hz
440 hz
880 hz
Refer to the following information for the next three questions.
Two notes with frequencies of 66 and 70 hertz are "sounded together."
The resulting beat frequency is
4 hertz
68 hertz
136 hertz
at a pitch of
4 hertz
68 hertz
136 hertz
Beats are the result of the alternate cancellation and reinforcement of two sound waves of
the same frequency
slightly different frequencies
Related Documents
Lab:
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Directions: Constructive and Destructive Interference
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Frequency of Vibrating Strings
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Illuminance by a Light Source
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Inertial Mass
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Interference Shading
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Pipe Music
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Relationship Between Tension in a String and Wave Speed
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Relationship Between Tension in a String and Wave Speed Along the String
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Ripple Tank Checklists
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Ripple Tank Checklists
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Ripple Tank Sample Solutions
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Ripple Tank Student Involvement Sheet
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Simple Pendulums: Class Data
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Speed of a Wave Along a Spring
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Speed of Sound in Air
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Speed of Sound in Copper
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Video: Law of Reflection
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Resource Lesson:
RL -
Barrier Waves, Bow Waves, and Shock Waves
RL -
Beats: An Example of Interference
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Interference of Waves
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Interference: In-phase Sound Sources
RL -
Introduction to Sound
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Law of Reflection
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Physical Optics - Thin Film Interference
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Resonance in Pipes
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Resonance in Strings
RL -
Ripple Tank Video Guides
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SHM Equations
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Simple Harmonic Motion
RL -
Sound Level Intensity
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Speed of Waves Along a String
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The Doppler Effect
RL -
Vibrating Systems - Simple Pendulums
RL -
Vibration Graphs
RL -
Wave Fundamentals
RL -
Waveform vs Vibration Graphs
REV -
Orbitals
Review:
REV -
Chapter 26: Sound
REV -
Honors Review: Waves and Introductory Skills
REV -
Physics I Review: Waves and Introductory Skills
REV -
Sound
REV -
Waves and Sound
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Waves and Sound
Worksheet:
APP -
Echo Chamber
APP -
The Dog-Eared Page
CP -
Light Properties
CP -
Reflection
CP -
Shock Waves
CP -
Waves and Vibrations
NT -
Apparent Depth
NT -
Atmospheric Refraction
NT -
Concert
NT -
Light vs Sound Waves
NT -
Shock Cone
NT -
Sound Waves
NT -
Standing Waves
WS -
Beats
WS -
Beats, Doppler, Resonance Pipes, and Sound Intensity
WS -
Counting Vibrations and Calculating Frequency/Period
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Doppler - A Challenge Problem
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Doppler Effect
WS -
Fixed and Free-end Reflections
WS -
Fundamental Wave Terms
WS -
Illuminance 1
WS -
Illuminance 2
WS -
Interference: In-phase Sound Sources
WS -
Lab Discussion: Inertial and Gravitational Mass
WS -
More Practice with Resonance in Pipes
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More Practice with the Doppler Practice
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Practice with Resonance in Pipes
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Practice with the Doppler Effect
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Practice: Speed of a Wave Along a String
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Pulse Superposition: Interference
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Ripple Tank Review
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Sound Vocabulary
WS -
Speed of Sound
WS -
Speed of Sound (Honors)
WS -
Standing Wave Patterns #1
WS -
Standing Wave Patterns #2
WS -
Standing Wave Patterns #3
WS -
Standing Wave Patterns #4
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Vibrating Systems - Period and Frequency
WS -
Wave Phenomena Reading Guide
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Wave Pulses
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Waveform and Vibration Graphs #1
WS -
Waveform and Vibration Graphs #2
TB -
25A: Introduction to Waves and Vibrations
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25B: Vibrations and Waves
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25C: Wave Speed
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25D: Interference
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25E: Doppler
TB -
25F: Doppler Effect (continued)
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26B: Speed of Sound
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26C: Resonance
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26D: Beats
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26E: Decibels
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27A: Light Properties
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Decibels and Sound Intensity #1
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Decibels and Sound Intensity #2
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Interference Re-examined
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Refraction Phenomena Reading Questions
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Sound: Mixed Practice
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Waves and Vibrations
Paul G. Hewitt
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