Why is the sky blue?

Answer 1

When we look at the sky during the daytime, we mainly see sunlight that has bounced off air molecules and scattered in all directions in the atomsphere. Because blue light scatters more easily than red light, and because the light from the sky is mostly scattered light, the sky appears blue. (If, however, we imagined a world without air, the sky would look dark even in daylight, because there would be no scattered light. On the moon, which has no air to scatter the sunlight, the sky appears black, even in the daytime.)

The sunset looks red, however, due to the opposite effect: We are looking mainly at the sun itself and not scattered light. At sunset, the sun sits near the horizon, so light from the setting sun must travel horizontally to reach our eyes and thus travels through a relatively large amount of air. By the time sunlight reaches us, only the reds are left unscattered.

Answer 2

You are person number 1481 to ask this very same question. It doesn't seem to matter how many times a day it is asked, you still get lots of wrong answers.

The sky is blue due to a process called Rayleigh scattering. Type "Why is the sky blue" in the "Search for questions" panel above, hit "search" and read about rayleigh scattering in most of the other 1480 sets of answers to the same question.

Answer 3

It is called the Raman effect.

He was the scientist from India, the phenomenon is now named after him, Sir C.V. Raman. He got a Nobel Prize in Physics for putting forth the theory that light scatters and the visible spectrum to the human eye is what you see.

There are other lights colors too out there but you cannot see them. Universe does not have a blue roof as the way it appears.
It is an effect due to light.

You are thinking. You are curious enough to ask the question. Great scientists are made - not born - because they question everything. Keep asking. Glad you did.

If Sir Isaac Newton did not ask the question why apple falls from the tree, the theory of gravity probably would have been discovered quite late.

So, you see - you have to ask "why" about things that most people take for granted.

Kudos.

Answer 4

Too complicated to explain try this link

http://www.sciencemadesimple.com/sky_blue.html

By the way. The sea looks blue as it reflects the sky, not the other way around (lol)

Answer 5

Scattering occurs when the atoms of a transparent material are not smoothly distributed over distances greater than the length of a light wave, but are bunched up into lumps of molecules or particles. The sky is bright because molecules and particles in the air scatter sunlight. Light with higher frequencies and shorter wavelengths is scattered more than light with lower frequencies and longer wavelengths. The atmosphere scatters violet light the most, but human eyes do not see this color, or frequency, well. The eye responds well to blue, though, which is the next most scattered color. Hope that answers your question

Answer 6

Because that's the colour of our atmosphere, air, in other words. Fly high enough and the blue deepens, until on the very outer layers the 'blackness' of space takes over.

The amount of water vapour in the air in any particular region will tend to whiten' the blue effect. The now familiar space photographs of our beautiful 'Blue Planet' are the result of a combination of the large proportion of water that covers the surface of Earth, but also the element of the atmospheric coloration.

And that is why the sky is blue.

Answer 7

Because that's the colour of our atmosphere, air, in other words. Fly high enough and the blue deepens, until on the very outer layers the 'blackness' of space takes over.

The amount of water vapour in the air in any particular region will tend to 'whiten' the blue effect. The now familiar space photographs of our beautiful 'Blue Planet' are the result of a combination of the large proportion of water that covers the surface of Earth, but also the element of the atmospheric coloration.

Answer 8

lmao i ♥ first person katlyn

its because of the molecules in the air, the density of the air and the temperature of the air, the light filters through it in such a way, its blue because the light scatters and reflects

on mars the sky is pink :p

Answer 9

refraction....the bending of light .... the light bends as it enters the earth's atmosphere... and it's not the reflection of the oceans.. the oceans appear blue due to the reflection of the sky

Answer 10

Mainly because Water is Wet, and Women Have Secrets!!