Why is the sky blue??

Question

Why is the sky blue??

Answer 1

the sunlight bouncing off nitrogen atoms

Answer 2

How do you know we are not all colourblind and the sky is in fact green!

Answer 3

Simple answer,our atmosphere.

Answer 4

Good Question I Have No frigging Idea!

Answer 5

Because of the rules of light and the ozone layer. If we had no ozone layer the sky would not apear to be blue. And the grass is green because of Chlorophyll a green substance in the grass which helps with photosynthesis.

Answer 6

Hiya the blue sky is caused by refraction of the blue spectrum by atoms in the air.

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 colors because the blue light has been scattered out and away from the line of sight.

http://math.ucr.edu/home/baez/physics/Ge...

In the evening, the sky sometimes looks orange or red because of air pollution. Dust and other floating particles in the air act as a filter on the sunlight. When the sun is low the air layer is thicker and the light is more filtered, so it looks yellow, orange and finally red.

http://www.sciencemadesimple.com/sky_blu...

The sky appears blue because when sunlight filters through the oxygen in the atmosphere, the oxygen absorbs all other colors but blue. The reason the sky is not so blue that it is black though, is because only 20% of the atmosphere is oxygen.

The sun light from the sky is a result of the scattering of sunlight, which results in a light blue color perceived by the eye. In day Rayleigh Scattering gives the sky a blue gradient - dark in the zenith, light near the horizon. Light that comes in from overhead encounters an air mass 1/38th of the mass that of a sunbeam coming along a horizon paths. So, fewer particles scatter the zenith sunbeam, and, therefore the light remains a darker blue.  Hope i helped!

Answer 7

Because it is mate! Why is the grass green?

Answer 8

if you look at a rainbow, it's loads of colours, one of which is blue.

When light passes through air, more blue rays make it to the ground without being reflected.

When the light is coming from the side, more pink ones get through, thats why sunsets are pink

Answer 9

refraction of light

Answer 10

Light from the sun is scattered by the air molecules in the atmosphere. Blue part of the light spectrum is scattered more than any other part, that's why the sky appears blue.

Answer 11

A simple answer: The atmosphere blocks all wavelengths except blue, which answers the age-old question!

Answer 12

There is a physical phenomenon called Rayleigh scattering that causes light to scatter when it passes through particles that have a diameter one-tenth that of the wavelength (color) of the light. Sunlight is made up of all different colors of light, but because of the elements in the atmosphere the color blue is scattered much more efficiently than the other colors.

So when you look at the sky on a clear day, you can see the sun as a bright disk. The blueness you see everywhere else is all of the atoms in the atmosphere scattering blue light toward you. (Because red light, yellow light, green light and the other colors aren't scattered nearly as well, you see the sky as blue.)

Answer 13

because it is? it's like asking why are the clouds white....

Answer 14

In short...

The blue sky is caused by refraction of the blue spectrum by atoms in the air.

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 colors because the blue light has been scattered out and away from the line of sight.

http://math.ucr.edu/home/baez/physics/Ge...

In the evening, the sky sometimes looks orange or red because of air pollution. Dust and other floating particles in the air act as a filter on the sunlight. When the sun is low the air layer is thicker and the light is more filtered, so it looks yellow, orange and finally red.

http://www.sciencemadesimple.com/sky_blu...

In detail...

Light of a particular color is determined by its frequency. The higher the frequency, the more blue it appears.

Sunlight is made up of many frequencies that when mixed together produce white light. You may have seen a rainbow or the prism experiment where the white light is split up into several colors (frequencies).

The earth's atmosphere is filled with minute dust particles that act like a filter, scattering the light rays. The rays of light with the longer wavelengths, such as reds and yellows, tend to travel more easily through the atmosphere, while the rays with the shorter wavelengths, like blues and indigos, tend to be dispersed more easily. These more easily dispersed shorter light rays are what give the sky its blue color.

Incidentally, red skies at sunrise and sunset are caused by the same phenomenon. When the light hits the Earth at an angle it has more of the atmosphere to go through; this increases the filtering effect and that is why you see a red sky.

Answer

The sky appears blue because when sunlight filters through the oxygen in the atmosphere, the oxygen absorbs all other colors but blue. The reason the sky is not so blue that it is black though, is because only 20% of the atmosphere is oxygen.

The sun light from the sky is a result of the scattering of sunlight, which results in a light blue color perceived by the eye. In day Rayleigh Scattering gives the sky a blue gradient - dark in the zenith, light near the horizon. Light that comes in from overhead encounters an air mass 1/38th of the mass that of a sunbeam coming along a horizon paths. So, fewer particles scatter the zenith sunbeam, and, therefore the light remains a darker blue

Answer 15

Because that's what colour God painted it, duh!  ;-)