why is the sky blue
DESCRIPTION
An answer to the question "Why is the sky blue"TRANSCRIPT
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WHY IS THE SKY BLUE?
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The sun light contains all the colors.
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The colors are separated into two types.
• the longwaves (red)
•the shortwaves (blue)
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The sunlight moves through
the atmosphere.
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Most of the longest
wavelengths pass straight
through.
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However, much of the shorter wavelength light is scattered by the
molecules in the atmosphere.
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Tiny gas molecules in
the atmosphere scatter the blue wave, creating an
effect that we see as a blue
sky.
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So the sky isn’t blue but only appears blue.
As you look at the sky, you see the scattered light of
blue.
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In space, there is no air. None of the light gets
scattered and the “sky” looks dark and black.
At night the sky is black because there
isn’t any light.
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By
Anna Alexandrou
and
Rafael Oliveira