Why is the sky blue?

Question

Why cant it be yellow?

Answer 1

why is water wet?
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 2

This question has been answered well above but I must say to some people that the sky isn't blue because it reflects the sea!

Do you think that if you were in central russia miles away from the sea that the sky would no longer be blue but would have patches of green in it.

Answer 3

Well because the light of the sun appears to beyellow-white, but in fact it consists of many different colors (which you can see when you refract sunlight through a prism). The sky looks blue because the air molecules in the atmosphere reflect the blue-colored portion of sunlight more efficiently than the red-or orange-colored portion. (That's the same reason the ocean looks blue- just substitue water molecules for air molecules. ) Did I answered your question?

Answer 4

its because of the visible light comes from the sun
in real the sky is not blue its black again because of the sun light it converts to blue. if you see when the sun goes down the light goes so the sky tunes in to black. that why sky is blue. also why it is blue because the visible light got many colours and when it hits to a subject it mixes the colour and so sky became blue.

Answer 5

The blue colour of the sky is due to the scattering of light by dust particles suspended in air.

Answer 6

different colours refract (an example of refraction is light going through a lens) differently or bend when travelling from one medium to another or in this case outer space to our atmosphere blue light tends to refract more than red so blue is scattered in atmosphere making the sky appear blue, the same reason makes the sun appear red when it's low in the sky when most of the blue light has been refracted out

Answer 7

Molecules in the atmosphere diffuse light.That diffusion is inversely related to the wavelength at power four.

So ,blue is one of the shortest wavelength in the visible spectrum and is the more diffused and the sky appears ble

Answer 8

There are some good answers above and one of them is probably closer to being right than mine, but I think it is the gases that make up our atmosphere and the colors that they produce when charged.

In neon lights gases are contained within tubes and when they're electrically charged they glow in various colors. I believe it is Krypton that makes purple, Oxygen that makes indigo, Argon possibly Nitrogen for blue, Neon for red, and Hydrogen and Helium are both orange.

Answer 9

Go to any search engine and type this exact question

why is the sky blue?

and you will have thousands of answers in 0.23 seconds.

http://search.yahoo.com/search?p=why+is+the+sky+blue%3F&fr=yfp-t-501&toggle=1&cop=mss&ei=UTF-8

Why can't it be yellow? Because of the wavelength of light put out most strongly by our sun, plus the composition of our atmosphere, plus the angle of incidence, it can't be yellow.

Answer 10

this is bcoz scattering is inversely propotional to the 4th power of wavelenth.
VIBGYOR
V-VOILET
I-INDIGO
B-BLUE
G-GREEN
Y-YELLOW
O-ORANGE
R-RED
this is how various colors of light r arranged according to increasing order of wavelenth.
as u can see blue light has lesser wavelenth so it with violet and indigo are scattered the most.this gives the sky its color.
as yellow light has larger wavelengh so it is scattered less
AND THIS IS WHY SKY IS BLUE IN COLOR AND NOT YELLOW.