Why is the sky blue?

Answer 1

Condensation (water) in the atmosphere.

Answer 2

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 3

Actually, it is not interstellar dust that is responsible for the color of the sky during the day and the Sun in morning and evening. It is the scattering within the Earth's atmosphere that is responsible.
Visible light is the region of the electromagnetic spectrum with wavelengths from 0.00000035 meters (violet light) to 0.00000075 meters (red light). Light usually travels in a straight line path, but it can be scattered by particles such as the nitrogen molecules in the Earth's atmosphere. This means that portions of the light energy are sent off into different directions. These directions are determined by the size of the wavelength of the light and the size of the particles doing the scattering. For the Earth's atmosphere, the effect is strongest in the shortest wavelengths; the effect is very small at longer wavelengths. The scattering is dominant for the wavelength that we see as blue, and this is why the sky appears blue.

Answer 4

This effect assumes the wave nature of light, i.e., light is made of waves, rather then particles (photons).
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.
Blue light is of a smaller wavelength than red light. Therefore, blue light is more affected by the Rayleigh scattering than red light. The scattering occurs when white light travels through the earth's atmosphere. Of all the constituent colors of white light, blue is most scattered and red is least scattered.
Due to this, while the sky appears blue, the red light from a sunset can be seen with no apparent scattering of the light.

Answer 5

The sun's rays hit the Earth's atmosphere, where the light is scattered by nitrogen and oxygen molecules in the air. The blue wavelength of this light is affected more than the red and green wavelengths, causing the surrounding air to appear blue. At sunset, the sun's light passes farther through the atmosphere, deflecting and decreasing the blue in the air. Scattering by dust particles and pollution in the air causes the sunset to appear red.

Answer 6

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.

Answer 7

When sunlight passes through our atmosphere, the water droplets and other things in the air
diffuse the sunlight. Everything in the air acts like a prism. If you notice the color
spectrum, blue does have the shortest wavelength than red so therefore it does not scatter
or disperse, it comes through and that is what we see. The colors toward the reds have a
longer wavelength and they diffuse or scatter easier than blue, more atmosphere like at
sunrise and sunset gives the reds as the short wavelenghts are bounced away from our eyes.

Answer 8

Rayleigh Scattering..the shortest wavelength of visible light is blue and is the widest scattered portion of the visible spectrum therefore the sky appears BLUE to our eyes

Answer 9

Cause the seas,oceans, rivers, lakes.water arean's color reflect the top of the air .

Answer 10

i think it reflects the ocean