why is the sky blue?

Answer 1

the sky isnt any coulor, its the ozone layer, when the sun shines around the ozone it lights up the space around earth, space is a dark blue and the ozone filters colours mainly lets blue through it

Answer 2

This is a very common question on yahoo answers. Nitrogen (which is about 70% of the air we breathe) scatters all the spectrum but the effect is increased by the forth power of the frequency, so light of short wavelength/ high frequency (blue) is scattered much more than long wavelength/ low frequency (Red) Hence the part part of the sun spectrum appears to come from all over the sky. This is called Rayleigh scattering.

Answer 3

OK here's a question for you, if the sky is blue from the reflection of the sea, the water in the sea, anything to do with the sea, why is the sky still blue when its not over the sea for example the desert, the Sky's still blue if you were in the middle of the largest desert around its still blue? MM i just don't know. x

Answer 4

The sky is blue partly because air scatters short-wavelength light in preference to longer wavelengths. Combined, these effects scatter (bend away in all directions) some short, blue light waves while allowing almost all longer, red light waves to pass straight through. When we look toward a part of the sky not near the sun, the blue color we see is blue light waves scattered down toward us from the white sunlight passing through the air overhead. Near sunrise and sunset, most of the light we see comes in nearly tangent to the Earth's surface, so that 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.

Answer 5

This is due to a process called Rayleigh Scattering. As light from the sun enters the atmosphere of Earth, it causes the molecules of gas to oscillate ie vibrate. These molecules then scatter the rays of light at a very high frequency, pertaining to the ultra-violet end of the spectrum, hence the blue colour.
At sun set, we see a red sky, that is because the light frequency is much lower and so the molecules of gas vibrate slower and the light is scattred nearer the infra-red section of the spectrum.
Earth's atmosphere is mainly Nitrogen, the atmosphere on Mars is mainly Carbon Dioxide (CO2). CO2 molecules scatter light at a much lower frequency and so the sky on mars is pink.

Answer 6

(m)

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.

The white light from the sun is a mixture of all colours of the rainbow. This was demonstrated by Isaac Newton, who used a prism to separate the different colours and so form a spectrum. The colours of light are distinguished by their different wavelengths. The visible part of the spectrum ranges from red light with a wavelength of about 720 nm, to violet with a wavelength of about 380 nm, with orange, yellow, green, blue and indigo between. The three different types of colour receptors in the retina of the human eye respond most strongly to red, green and blue wavelengths, giving us our colour vision.

Answer 7

Coz its not very happy?

Lol, I think it has something to do with the sunlight reflecting the colour from the sea into the sky, which makes it appear blue.

Answer 8

because GOD made it that way so that when you feel blue you can look to sky and you will realize that your not alone. the whole sky is also in blue

Answer 9

After making the universe, God had some paint left over. He threw the blue pot in the direction of earth. As the pot hit the atmosphere, it burst open and all the paint got scattered into the air.

Can you imagine the colour of our planet had the pot contained bright red paint? OR even a pastal yellow?

Answer 10

The molecule particles that make-up the Earth's atmosphere, turn blue when the photon particles being emitted from our Sun, stream through them.