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The primary colors of light are red, blue and ___.
lens
speed
True
visible spectrum
False
green
True
True
True or False: Light waves travel slower than sound waves do.
lens
speed
True
visible spectrum
False
green
True
True
True or False: Radar and cellular phones use microwaves.
lens
speed
True
visible spectrum
False
green
True
True
True or False: Light generally travels in a straight line.
lens
speed
True
visible spectrum
False
green
True
True
The distance that one wave travels in one second is the ___ of that wave.
lens
speed
True
visible spectrum
False
green
True
True
The different colors of light that can be seen make up the ____.
lens
speed
True
visible spectrum
False
green
True
True
True or False: Light is an electromagnetic wave that can be seen.
lens
speed
True
visible spectrum
False
green
True
True
A piece of glass or another transparent object that refracts light and produces an image is a ___.
lens
speed
True
visible spectrum
False
green
True
True
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