why sky looks blue at day?

Answer 1

The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.

However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.

Answer 2

Kitty's answer is wrong (sorry). She has it reversed. The oceans are blue because it reflects the color of the sky. Not the other way around. Notice when the sky looks red-orangey then an the sea is also the same color. 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 colours because the blue light has been scattered out and away from the line of sight.

Answer 3

Rayleigh scattering is correct. Rayleigh scattering of sunlight by the oxygen and nitrogen molecules that make up 99% of the atmosphere is more effective at blue wavelengths than at red wavelengths, as stated by several previous posters.

Rayleigh scattering is also why the sky near the horizon appears red at sunset and sunrise: The blue light is scattered away from the line of sight from the sun to your eyes, removing it from the beam and leaving the red and orange light to reach your eyes.

Clouds are white because a different phenomenon describes light scattering by tiny liquid droplets, the phenomenon of Mie scattering. Clouds are droplets of water suspended in air. Milk also appears white because of Mie scattering: Milk is droplets of butterfat or protein suspended in water.

Answer 4

Becouse about 71% of the earth is water (oceans, rivers & seas) so the sky is (blue) due to the reflection of light on these (blue) parts on th earth

i hope u got ur point from my explanation

Answer 5

It's not only the ocean that it reflects on...

Though, the reason why the sky is blue or pretty much anything is of color is because it's either how our eyes see it or by the reflections of other objects put together.

Answer 6

I believe it has something to due with the atmospheric gases and reflection. The light that is sent by the sun contains all the colors and blue is the one that the gases in the atmosphere reflect?

Answer 7

Rayleigh scattering. See Wikipedia article.

Answer 8

because the atmosphere is reflecting the color of the oceans wich are blue

Answer 9

difference of the length of the light wave.

Answer 10

Because it's fun.