Why Is the sky blue?

Answer 1

It is due to Rayleigh scattering. From the white Sunlight only blue colour is more scattered by the atmosphere and sensitive to the human eye.

Answer 2

The blue color of the sky is caused by the scattering of sunlight off the molecules of the atmosphere. This scattering, called Rayleigh scattering, is more effective at short wavelengths (the blue end of the visible spectrum). Therefore the light scattered down to the earth at a large angle with respect to the direction of the sun's light is predominantly in the blue end of the spectrum.

The strong wavelength dependence of Rayleigh scattering enhances the short wavelengths. Intensity is INVERSLY proportional to fourth power of wavelength.

Note that the blue of the sky is more saturated when you look further from the sun. The almost white scattering near the sun can be attributed to MIE Scattering, which is not very wavelength dependent.

Clouds in contrast to the blue sky appear white to achromatic gray.The water droplets that make up the cloud are much larger than the molecules of the air and the scattering from them is almost independent of wavelength in the visible range

Answer 3

The color of the sky is a result of diffuse sky radiation which turns it a lig violet color. It appears blue because human eyes cannot see deeply into the Violet range and sees colors closer to green the best. On a sunny day the Earth sky usually looks as a blue gradient — dark in the zenith, light near the horizon (due to Rayleigh scattering). It can turn a multitude of colors at sunset/sunrise and turns black at night.

Answer 4

This is the easiest question, well when the sky is reflecting off of the sun it becomes lighter which makes it blue..but naturally the sky is black. My second answer would be that if God wouldn't make it blue in the first place it would never become that way..

Answer 5

Well, the real answer to that question is based on the position of the earth to the sun... Well, during daytime, the sun is directly above the earth, which makes it easy for the light to pass through... And, if this happens, the light will strike to some of the vapors, or other particles in our sky, like clouds, etc.. which makes the sky turns blue... On the other hand, during sunset, the sun is at the side position of your place, which makes it difficult for the light ot pass through, and, moreover, makes it appear orange or red...

Answer 6

The sky is blue because it is the reflection of the water bodies in the earth. The water bodies are blue because it is the reflection of sky. But truly it is because of the light content present in the air both are blue.

Answer 7

The sky is blue because particles in atmosphere diffuse light. The intensity of light diffuse is inversely related to the fourth power of the wavelength. So, blue light which has a smaller wave length is more diffused than other visible light.

Answer 8

Light coming from the sun is what's called "white light" White light contains all the colors of the rainbow. When it enters Earth's atmosphere this light is separated into its individual colors by chemical elements in the atmosphere and scattered across the sky. Nitrogen is the most abundant element in our atmosphere, and that element scatters the color blue across our sky. In space, there is no atmosphere to separate colors from the white light and space looks black.

Answer 9

apparantly the reason why the sky is blue is the same reason the ocean is blue.

not really what you were asking but interesting none the less

Answer 10

because about 3/4 of the atmosphere is made up of nitrogen... nitrogen makes the sky blue...