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An answer to the question "Why is the sky blue"
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WHY IS THE SKY BLUE?
The sun light contains all the colors.
The colors are separated into two types.
• the longwaves (red)
•the shortwaves (blue)
The sunlight moves through
the atmosphere.
Most of the longest
wavelengths pass straight
through.
However, much of the shorter wavelength light is scattered by the
molecules in the atmosphere.
Tiny gas molecules in
the atmosphere scatter the blue wave, creating an
effect that we see as a blue
sky.
So the sky isn’t blue but only appears blue.
As you look at the sky, you see the scattered light of
blue.
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.
By
Anna Alexandrou
and
Rafael Oliveira