why is the sky blue?

Answer 1

The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.

However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.

As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white.

This site discusses so much more and is really interesting.

Answer 2

It has to do with light and the earths atmosphere.
"WHY IS THE SKY BLUE?
The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.

However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue"

check out this link, it explains it in detail
http://www.sciencemadesimple.com/sky_blue.html

Answer 3

We perceive the sky to be blue because of the way that our eyes perceive color (and light). Think about color blindness, which varies by type of color, etc. Some color-blind people would probably not perceive the sky as blue; some would perceive it as purple or reddish, etc. So, the fact is that we perceive colors to be a particular shade that is agreed-upon by the general population. (If the majority of people were color-blind and the minority of people had normal color vision, then "we" would probably all agree that the sky is a different shade!)

Answer 4

The sky is blue due to scattering of light. When light strikes the atmosphere, it gets scattered due to the air molecules in the clouds, which, for a given value, scatters the light of greater wavelenght the most (as proved by Rayleigh). Hence, since blue light has the greatest wavelenght compared to nearly all other light waves, hence it gets scattered the most.

Answer 5

The sky is blue due to how sunlight bends through it.

Also, the ocean is blue because it's reflecting the sky, thought that was a cool little bit too.

Answer 6

it's the way the sunlight is reflected and refracted through the air. the blue in the spectrum catches the light and bounces it all over so all the sky looks blue.

Answer 7

the sky is blue because of the way light refracts off molecules of moisture in the atmosphere

Answer 8

http://www.sciencemadesimple.com/sky_blue.html gives a full explanation.

Basically it is because of the way light is projected; this turns the sky blue.

Answer 9

blue is the shortest wavelength in the light spectrum and it is reflected up to 10 times more than the other colors.

Answer 10

Asked and answered SOOO many times here. Did you not see the plethora of blue-font questions that popped up when you wrote this question?