Why is the sky blue?

Answer 1

On the moon, the sky is black. On earth, the sky is blue, because we have the atmosphere. When sun light passes through the atmosphere, it is scattered by the gaseous molecules. Different wavelengths of light are not equally affected by air. The shortest wavelengths of sunlight, which are blue in color, are most susceptible to this scattering effect. They bounce all over the sky and enter our eyes from all directions, giving the overall blue impression we observe.

At dawn or dusk, the sunlight has to travel a greater distance through the atmosphere. Most of the shorter wavelength lights are scattered away, and only the longer wavelength lights pass through. That is why the sun appears orange at dawn and dusk.

Answer 2

The atmosphere is the mixture of gas molecules and other materials surrounding the earth. Similarly, visible light is the part of the electromagnetic spectrum that our eyes can see. Light from the sun or a light bulb may look white, but it is actually a combination of many colors. The colors blend continuously into one another. At one end of the spectrum are the reds and oranges. These gradually shade into yellow, green, blue, indigo and violet. The colors have different wavelengths, frequencies, and energies. Violet has the shortest wavelength in the visible spectrum. That means it has the highest frequency and energy. Red has the longest wavelength, and lowest frequency and energy. 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. Which ever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.
Now tell me why red during sun set or rise? ;) just kidding!

Answer 3

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.

to understand more, follow this link: http://www.sciencemadesimple.com/sky_blue.html

Answer 4

The way the light hits our atmosphere and the angle at which we are viewing the sky appears blue. That's why when sunsets occur you get different colors other than blue because the angle of the light has changed and the Earth's position has also changed.

Answer 5

the sky absorbs all light but blue, which is reflected

Answer 6

When the sun hits the water it reflexes the color to the atmosphere which it`s blue.

Answer 7

because of the refraction of light through the water molecules on earth. i'm such a nerd.

Answer 8

Because that's the way jesus made it

Answer 9

because it wants to be :P

Answer 10

coz it's not green