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38 Cards in this Set
- Front
- Back
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The source of all waves is a
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vibration
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The time it takes for a pendulum to swing back and forth once is
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period
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what type of wave moves at right angles to the direction of the wave's speed?
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transverse
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The wavelength of a longitudinal wave is the distance between
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compression
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The part of a wave that doesn't move as the wave travels along is
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node
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A change in wave frequency because the wave source is moving is called
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doppler effect
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The light from a galaxy moving away from us will show
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red shift as the wavelengths are stretched
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Another term for faster than sound is
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supersonic
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a shortened pendulum will have its frequency_____ and its period ____
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increased, decreased
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Lightning is seen before thunder is heard due to the difference in light and sound:
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speed
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As a locomotive moves toward you, its pitch will
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increase
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sound travels slowest in
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air
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the average range of a person's hearing is
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20-20,000 Hz
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Small animals can hear__________ sounds that humans can't
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ultrasonic
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Refraction of sound is caused by different
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temperature layers
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The characteristic of a musical note is its
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quality
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pitch is relative to a sounds wave's
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frequency
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There are more violins than cellos in an orchestra to compensate for a violin's low
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amplitude
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A tuning fork sounds louder when held against a table than when in air due to
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forced vibration
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how much more intense is 40 dB than 10 dB?
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1000X
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An ocean wave is an example of a ___ wave
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transverse
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CD's and DVDs use a ________ to digitally record sound
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Laser
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As a supersonic aircraft increases speed, the angle of the bow wave becomes___
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smaller
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The unit of measurement for wavelength is
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m
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The unit of measurement for frequency is
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Hz
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The parts of a longitudinal wave where the particles are close together
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Compression
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The shape of a transverse wave is a
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Sine Curve
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Waves carry
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energy
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When wave frequency decreases, wavelength
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increases
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The frequency of the up and down motion of a bottle in the water is ___ as the number of waves passing each second.
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The Same
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Sound needs _______ to travel
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a medium to carry it
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Sound wave energy eventually becomes
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heat
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to pick up a radio station your radio must match the broadcast
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frequency
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waves cancel one another when they are
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out of phase
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What will be the beat frequency between 140 Hz and 140 Hz?
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They are the same
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You can feel the tremor in the ground from an explosion before you hear it because of the difference in
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Speed in ground and air
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The same note played on two different instruments sound different due to their...
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Quality
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Which kind of wave can exhibit interference?
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Transverse and Longitudinal
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