why is the sky blue?

Answer 1

Because Its Nice And Cool Up There. Its Baking Hot Red Down Here Because Your So Fit And Hot!!

Answer 2

The nitrogen in the air scatters the blue part of the spectrum more than the red. Hence the blue part of sunlight appears to originate over the entire sky, hence the sky looks blue - otherwise the sky would be black.

You can try an experiment.

Get a fish tank (or something similar) and fill it with water. Now put powdered milk in the water. The diameter of the milk particles is just right to scatter blue light. Now turn off the lights an shine a torch (flash light for the yanks) through the tank. The water appears blue!

Same effect as the sky being blue....

Answer 3

Why is the sky blue? People have been asking this question for centuries. The generally accepted scientific explanation for blue sky was first proposed by Lord Rayleigh, a British physicist and mathematician of the late 1800's.

Rayleigh's theory was unique. He agreed with other scientists of the time that dust and other large particles in the atmosphere could scatter light, and that when this occurred, the spectral colors red and blue were revealed. Rayleigh also agreed that no light was absorbed by large particles, but he took this concept of scattering in the atmosphere one step further.

Rayleigh concluded that as light traveled from the Sun to an observer, it encountered molecules, mostly of nitrogen and oxygen, in the atmosphere. Rayleigh then calculated a mathematical formula that demonstrated that, even in an atmosphere without smoke and dust, gas molecules like oxygen could redirect sunlight and scatter it in many directions. Sunlight is a form of visible light that contains all of the colors. When it is scattered, it is perceived by the human eye as having a specific color. When sunlight encounters gas molecules in the atmosphere, high frequency blue light is scattered out first. The most intense blues are usually seen between 10:00 a.m. and 3:00 p.m. on cloudless days, if we look at the sky about 45 degrees above the horizon with our with our backs to the Sun.

As the Sun begins to set, the sky at the horizon often appears to be red. Sunlight entering at the horizon level travels through more atmosphere than sunlight entering overhead. Most of the shorter wavelength light has been scattered out, allowing longer wavelengths of light to reach our eyes. When particles of dust provide additional opportunities for scattering, sunsets have a red glow. The brilliance is often enhanced in the sky by clouds.

Answer 4

Why the sky is 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.

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.

Hopes this helps! ^_^!! email me if there's a problem! thnkz!!
That's all!!

Answer 5

It isn't.
This is only an atmospheric effect. The sky doesn't exist as such. It is a transparent mix of gases that filter light at different wavelengths.
A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

Answer 6

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.

Answer 7

red light has a long wavelength while blue light has a short wavelength. The gas molecules in the atmosphere scatter the blue wavelengths better than the red wavelengths. So the sky looks blue. Look here for more information about the color of the sky.

Answer 8

Easy! - A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

Answer 9

The earth's atmosphere acts as a prism and splits the suns light into its constituent parts. The part of this spectrum we usually see is the blue part because the atmosphere reflects the all the other colours back into space. I say usually because when there's a sun rise or sun set, the sky can be red. Hence a different part of the light spectrum is being let through.

Another example of this is the planet Mars. Where the light there is always red.

Answer 10

Blue is the shortest wave length of light, Sun light hit's our atmosphere and is scattered in the form of blue light, at the end of the day "SUNSET", the sunlight must pass through more of the Earths atmosphere (angled), so that only Yellow, red, and orange colors can pass through the gasses of our atmosphere, thats why sunsets, and sunrises, are so pretty !

Answer 11

Light from the sun is refracted and filtered through the atmosphere so that only a certain part of the spectrum reaches the earth. It just so happens that the wavelengths that reach us are the blue part of the spectrum.