Why is the sky blue?

Question

why isn't it pink?

Answer 1

Because the air we breath is made up of approximately 78% Nitrogen, which absorbs nearly every color wavelength except blue. Thus, you see blue.

Answer 2

The sky is blue partly because air scatters short-wavelength light in preference to longer wavelengths. Where the sunlight is nearly tangent to the Earth's surface, the light's path through the atmosphere is so long that much of the blue and even yellow light is scattered out, leaving the sun rays and the clouds it illuminates red, at sunrise and sunset.
Light travels through space in a straight line as long as nothing disturbs it. As light moves through the atmosphere, it continues to go straight until it bumps into a bit of dust or a gas molecule. Then what happens to the light depends on its wave length and the size of the thing it hits.

Dust particles and water droplets are much larger than the wavelength of visible light. When light hits these large particles, it gets reflected, or bounced off, in different directions. The different colors of light are all reflected by the particle in the same way. The reflected light appears white because it still contains all of the same colors.

Gas molecules are smaller than the wavelength of visible light. If light bumps into them, it acts differently. When light hits a gas molecule, some of it may get absorbed. After awhile, the molecule radiates (releases, or gives off) the light in a different direction. The color that is radiated is the same color that was absorbed. The different colors of light are affected differently. All of the colors can be absorbed. But the higher frequencies (blues) are absorbed more often than the lower frequencies (reds). This process is called Rayleigh scattering. (It is named after Lord John Rayleigh, an English physicist, who first described it in the 1870's.)

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.

Answer 3

Our atmosphere scatters the sunlight and filters out a lot of colors from the spectrum, so the light that reaches us looks blue. If you're in an airplane sometime, try to look up (as best you can). Because there's less atmosphere between you and outer space, the sky looks a lot darker.

Answer 4

Because the blue wavelength of light emitted by the sun is absorbed and reflected easier by the air. The other wavelengths just pass through, but the blue light bounces around and hits your eye when you're not looking directly at the sun.

Answer 5

Because oxygen particles in the sky reflect blue light from the sun. That is what makes the sky blue.

Answer 6

why would it be pink first of all?? and second of all, its the sun passing through the atmosphere.... which is the color blue. Thats why, at night time the sky is dark, because there is no light shining through....

Answer 7

Its not really blue. It just looks blue. It could be pink if it reflected every wave length other than pink.

Answer 8

LMAO this qns has been asked more than 10 times.

search yahoo q n a and stop askin this plz..