why is the sky blue?

Question

I just wonder about this so much.

Answer 1

Light of a particular color is determined by its frequency. The higher the frequency, the more blue it appears.

Sunlight is made up of many frequencies that when mixed together produce white light. You may have seen a rainbow or the prism experiment where the white light is split up into several colors (frequencies).

The earth's atmosphere is filled with minute dust particles that act like a filter, scattering the light rays. The rays of light with the longer wavelengths, such as reds and yellows, tend to travel more easily through the atmosphere, while the rays with the shorter wavelengths, like blues and indigos, tend to be dispersed more easily. These more easily dispersed shorter light rays are what give the sky its blue color.

Incidentally, red skies at sunrise and sunset are caused by the same phenomenon. When the light hits the Earth at an angle it has more of the atmosphere to go through; this increases the filtering effect and that is why you see a red sky.

Answer 2

the sky is NOT actually blue. it's only light reflected off atmosphere to appear that way

Answer 3

It's blue because there are no stars around.
Wait a few hours and things will change.

Answer 4

I agree with Geomatic

Answer 5

This question should be banned.

http://answers.yahoo.com/search/search_result;_ylt=Atm_26kSwxmrT_qQutw7zCgDxgt.;_ylv=3?p=why+is+the+sky+blue

5502 results.

And its NOT because of the ocean.

Answer 6

because of the ocean

Answer 7

Because it's sad.