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


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