Why is the sky blue?

Answer 1

Because a yellow sky would be W-E-I-R-D

Answer 2

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


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

The sky is blue because of the weather.

Answer 4

because the color blue is near the end of the light spectrum and when the air gets thinner as you go higher the less light is reflected and the lower colors are absorbed while the blue and dark blue ( or violet) are reflected to us.

Answer 5

because you don't live in New York or one of the other big cities who has a red sky!

Answer 6

Maybe it isn't really blue, you only think it's blue. For example, try describing blue to someone who can't see.

Answer 7

Its because of ulta violent light and scattering of light and colors. Its in a 6th grade science book for pittys sake!

Answer 8

cuz the waters are blue too. it is probably gods fav. color. the virgin mary is also seen wearing blue in many of her statues and paintings. yup. probably is.

Answer 9

Because green was taken by grass. lol

Answer 10

it's because of the ozone and the collors of pigment