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conceptual physics
part four study guide vibrations and sound
30
Physics
Professional
08/08/2013

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Term
You swing to and fro on a playground swing. If you stand rather than sit, the time for a to and fro swing is
Definition
Shortened
Term
The time it takes for a pendulum swinging to and fro refers to
Definition
Period
Term
The period of a 10-Hz wave is
Definition
1/10s
Term
A wave transfers
Definition
Energy
Term
Find the speed of a wave by multiplying its frequency by its
Definition
Wavelength
Term
The vibrations in a transverse wave move in a direction
Definition
Perpendicular to the wave
Term
The vibrations in a longitudinal wave move in a direction
Definition
Along and parallel to the wave
Term
Interference is a characteristic of
Definition
Sound waves, light waves and water waves
Term
Standing waves are the result of
Definition
Interference, waves overlapping in phase and out of phase, waves reflecting upon themselves.
Term
The Doppler effect occurs when a source of sound moves
Definition
Towards you and away from you
Term
Compared with the sound you hear from the siren of a stationary fire engine, its sound when approaches you has an increased
Definition
Frequency
Term
Bow waves are produced by waves of water
Definition
Overlapping one another
Term
Shock waves are produced by waves of sound
Definition
Overlapping one another, constructively interfering, moving slower than the source producing them
Term
During the time an aircraft produces a sonic boom, the aircrafts is
Definition
Flying faster than sound
Term
The sound waves that most humans cannot hear are
Definition
Infrasonic and ultrasonic
Term
Sound travels on air by a series of
Definition
Compressions and rarefactions
Term
The compression s and rarefactions in sound normally travel
Definition
In the same direction
Term
Sound travels in
Definition
Solids, gases and liquids
Term
The speed of sound is slightly greater on a
Definition
Hot day
Term
Sound will travel faster in
Definition
A steel beam compared with a wooden plank, ocean water or an air balloon
Term
The loudness of a sound is mostly closely related to its
Definition
Amplitude
Term
Your friend states that under all conditions, any radio wave travels faster than any sound wave you
Definition
Agree with your friend
Term
When you tap a piece of wood it will produce a characteristic sound relate to its
Definition
Natural fequency
Term
When an object is set vibrating by wave that has a matching frequency, which occurs is
Definition
Resonance
Term
Noise canceling devices make use of sound
Definition
Interference
Term
The phenomenon of beats is the result of sound
Definition
Interference
Term
A 1134 Hz tuning fork is sounded at the same time a piano not is struck. You hear 3 beats per second. The frequency of the piano string is
Definition
More info is needed to determine the frequency
Term
The pitch of a sound is mostly related to its
Definition
Frequency
Term
Compared with a sound of 60 decibels, a sound of 80 decibels has an intensity
Definition
100 times greater
Term
Compared with a fundamental tone, the frequency of its second harmonic is
Definition
Twice as much
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