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Asked by alishawatt1 to Emma on 11 Mar 2013.
Question: why is the sky blue?
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Emma Ashley answered on 11 Mar 2013:
When the light from the sun shines through the atmosphere, which is made up of lots of different gas molecules, the light is scattered in a certain way (this is called Rayleigh scattering). The blue light is absorbed by the gas molecules and then scattered in different directions all around the sky. Since you see the blue light from everywhere overhead, the sky looks blue.
Comments
Jimmy commented on :
Yep, and this is also why the sunset looks red.
When you look at the sun setting, the blue light is scattered by the air so not much makes it to your eye. The red light however is not scattered – so survives the straight line journey to your eye.
wilse010 commented on :
yes Jimmy!!!!!!