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Sound and Waves Unit Test Review
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Which travels faster: light or sound?
light
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If a wave goes around something that gets in the way, is that reflection, diffraction, or refraction?
diffraction
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What causes the refraction of a wave?
density of the medium changing
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The amount of energy found in a _____ wave can be found by comparing the size of the compression and rarefaction.
longitudinal
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What color do we see if all light is reflected?
white
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If a wave bends because the speed of the wave changes, is that reflection, diffraction, or refraction?
refraction
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Waves that need a medium are called ____.
Mechanical
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How is a light wave different from all mechanical waves?
Light does not need a medium to travel
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Why can't you hear sound in space?
There is no air in space for sound to travel through (no medium)
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A wave that has crests and troughs is what kind of wave?
Transverse
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What type of light passes through a prism and refracts into different colors?
white light
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What is being transferred with a wave?
Energy
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_____ is the distance between crest and crest OR trough to trough.
Wavelength
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Which type of wave does not need a medium to travel through?
electromagnetic
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_____ is how far the wave travels from the rest position.
amplitude
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Increasing the amplitude means you are increasing the _____ of a wave.
energy
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Through which state of matter do sound waves travel the fastest?
solid
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____ is the number of vibrations that occur per second.
Frequency
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What is the highest point of a wave called?
Crest
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What is the unit for frequency?
Hertz
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A wave that has compressions and rarefactions is what kind of wave?
Longitudinal
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____ describes what you actually hear?
loudness
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If a wave bounces off a surface, is it reflection, diffraction, or refraction?
reflection
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What is the lowest point of a wave called?
trough
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