why is the sky blue?

Answer 1

Klo-Jann:
The dust in the atmosphere reflects blue light from sunlight(white) to us. Therefore we see the sky as blue in colour.

Answer 2

Colors have seperate wavelengths, and blue is the one that fits best between all the molecules in the sky, so the sky is blue!

It turns black at night because the blue comes from the white light the sun gives off.

Answer 3

The light from the Sun looks white. But it is really made up of all the colors of the rainbow.

A prism is a specially shaped crystal. When white light shines through a prism, the light is separated into all its colors.

If you visited The Land of the Magic Windows, you learned that the light you see is just one tiny bit of all the kinds of light energy beaming around the Universe--and around you!

Like energy passing through the ocean, light energy travels in waves, too. Some light travels in short, "choppy" waves. Other light travels in long, lazy waves. Blue light waves are shorter than red light waves.

All light travels in a straight line unless something gets in the way to--
reflect it (like a mirror)
bend it (like a prism)
or scatter it (like molecules of the gases in the atmosphere)

Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Closer to the horizon, the sky fades to a lighter blue or white. The sunlight reaching us from low in the sky has passed through even more air than the sunlight reaching us from overhead. As the sunlight has passed through all this air, the air molecules have scattered and rescattered the blue light many times in many directions. Also, the surface of Earth has reflected and scattered the light. All this scattering mixes the colors together again so we see more white and less blue.

Answer 4

The water content present in the air ,from Earth we are seeing so the sky is in blue colour.When we go beyond it the seems to be black.

Answer 5

Rayleigh scattering (named after Lord Rayleigh) is the scattering of light, or other electromagnetic radiation, by particles much smaller than the wavelength of the light. It occurs when light travels in transparent solids and liquids, but is most prominently seen in gases. Rayleigh scattering of sunlight by the atmosphere is the main reason light from the sky is blue.

Answer 6

Oh wow... more people answering when they should just be quiet.

Here's the answer...

About 75% of the atmosphere is nitrogen gas (N2). N2 is mostly clear, but put a lot of it together and it has a faint hint of baby blue in that container. Now, put an immense amount of it in a volume like our atmosphere and it gives off a beautiful baby blue hue.

Answer 7

Who says its blue? What make you think that?If you take air while you are in an airplane in the sky and put it in a clear jar its not blue.

Answer 8

Because that is the color that the particles in the atmosphere reflect back to our eyes of sun’s light

Answer 9

Because of the refraction of sunlight by the earth's atmosphere

Answer 10

Because Its blue?LOl. I always wanted to know why..