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Stack #184063
Stack #184063 Light SOL 5.3
Question | Answer |
---|---|
Translucent materials | allow only part of the light to pass through (lets a little light through) |
Opaque materials | completely block light from passing through |
Transparent materials | allow light to pass through with little or no disturbance; allows the light to pass clearly through |
Light travels in | waves in a straight path |
the top of a wave is | the crest or peak |
the bottom of the wave | is called the trough |
a wavelength is | the distance measured from crest to crest on a wave |
Refracted light | appears to be bent |
Reflected light | bounces off or back |
Transmitted light | is passed through an object |
Absorbed light | is taken in as heat |
Natural light | is found in nature - sun and stars |
Artificial light | is man made - light bulbs or flashlight |
Bioluminescence | is the ability of living things to make light in their own bodies by a chemical reaction - fireflies, lightning bugs, and some fish |
lenses | are pieces of transparent material that can be glass or plastic |
convex lenses | are thicker in the middle and thin on the edges and make objects appear bigger than than they really are |
concave lenses | are thinner in the middle and thicker on the edges and make objects look smaller than they really are |
some common optical tools | are eyeglasses, flashlights, cameras, binoculars, and microscopes |
It takes light from the sun | less than 8 1/2 minutes to reach the Earth |
Light waves | do NOT need a medium (any matter) through which to move |
rays | are the straight paths light travels in |