why is it the sky is blue and not green?

Answer 1

Here is something interesting to think about: When you look at the sky at night, it is black, with the stars and the moon forming points of light on that black background. So why is it that, during the day, the sky does not remain black with the sun acting as another point of light? Why does the daytime sky turn a bright blue and the stars disappear?

The first thing to recognize is that the sun is an extremely bright source of light -- much brighter than the moon. The second thing to recognize is that the atoms of nitrogen and oxygen in the atmosphere have an effect on the sunlight that passes through them.

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 2

Ozone (3 atoms of Oxygen atomically combined) gives off the blue color. When the ozone is destroyed or there is a more dominant chemical in the atmosphere the sky will turn either a Nitrogen green or some other color of light refracting through the atmosphere.

Answer 3

It's due to the way air molecules scatter light. Short wavelengths (e.g. blue) are scattered more than the long ones (e.g. red). Also, green wavelengths are longer than blue. When you look at the sky, you see scattered light. When you look at a setting sun, on the other hand, you're seeing transmitted (not scattered) light and it's red because the blue light has been scattered out. The physical phenomenon involved is called Rayleigh scattering.

Answer 4

The sky is blue partly because air scatters short-wavelength light in preference to longer wavelengths. Where the sunlight is nearly tangent to the Earth's surface, the light's path through the atmosphere is so long that much of the blue and even yellow light is scattered out, leaving the sun rays and the clouds it illuminates red, at sunrise and sunset.

Answer 5

When the ocean is green the sky is blue when the sky is blue the ocean is green

Answer 6

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 7

Because during the day blue light waves are absorbed by the gas molecules in the atmosphere, and are reflected around in different directions so no matter where you look in the sky, you see blue. It's called "Rayleigh scattering."

Answer 8

Depends on the refraction of the white light spectrum in the sky by moisture in the clouds /air.

Answer 9

simple, cause we named the sky blue and we see the color blue as blue. we can name green as blue if we want to or name blue as green too?

does it make sense?

Answer 10

Because the sun reflect off the oceans... and it make the color blue. When it's cloudy... the sky is grey.