why is the sky blue?

Answer 1

Hi,

Rayleigh's Scattering Law:

The amount of scattering is inversely proportional to the fourth power of the wave length.

I'll explain you clearly..

if you see the color of the sky from the earth at noon, it appears to be blue due to the scattering of sunlight by the molecules of gases present in the earth's atmosphere.
i hope you might know that the shorter wavelength travels much more than the longer wavelengths. blue has shorter wavelength in solar spectrum region. so this scattered radiations causes the sky to appear blue.
also during the sun rise and sun set, the rays have to pass thro a greater distance. so blue color is scattered away. the red color is having longer wavelenghts. so the sky appears red in sun set and sun rise.

Answer 2

"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.) "

howstuffworks.com

Answer 3

The sky appears blue because the atmosphere reflects to our eyes only the blue band of the spectrum of light entered therein, which ranges from the red, that has the longest visible wave length, to violet, the shortest. If you were standing on the planet Mars, you will see the sky red. Why? because of the same reason; the atmosphere of Mars would reflect the longest wave length which measures to be almost 1.4 psi compared with the earth atmosphere which is 14.7 psi. You can stand where ever you wish in our solar system in any planet that has an atmosphere and figure why the color of Neptune is turquoise.

I want you to guess the color of the sky if you stand on the Moon. What color would you see?

Answer 4

Reflection of water.
Ok that is not scientific but the scientific qnswer is truly boring, and I love blue skies.
But for you, here comes the yadayada answer anyway.
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The molecules which make up 99% of the earth's atmosphere do not absorb any wavelengths of visible light. Molecules in the air are not like indigo molecules which absorb red light and give blue cloth its color. Molecules in the air are not pigments. However, molecules in the air do scatter blue light more strongly than red light. This means that white sunlight has its blue components scattered to the side while its red components keep traveling straight. White sunlight bathes the atmosphere of the earth. The sky is blue because molecules in the air scatter blue to your eyes more than they scatter red.

Answer 5

because of the molecules that make up the gases, they are illuminated by the sun and obscur the black space sky behind them all the while absorbing other wavelengths of light. Red skies are created by a prism effect from a curved lensing sky and a low setting sun or rising sun!

Answer 6

the above answer is definetly wrong btw.. its NOT cuz of the reflection of water!
i forgot what the reason is, but it has something to do with the first answer u got.. its the air that spreads out the light from the sun, so light is scattered throughout... it also relates to why it gets red during sunset, but im really sorry i forgot... it escaped my mind :(

Answer 7

its due to the scattering of light in the atmosphere
blue light is scattered more than any othe rlight so it is seen to be blue
its known as the Rayleigh scattering affect

Answer 8

The color blue carries the most energy, and drowns out all the other colors.