why is the sky blue?

Answer 1

well this is about the 1000th time i have seen this question and its the same answer as before.....light reflecting from space onto the earth,s surface which is covered in water

Answer 2

The answer has apparently only been around for 130 years so give the asker a break for knowing the answer....hehe! I didn't know either although I have been known to have moments of great intellectual insight only to lose it when the drugs wore off. The answer is that light travels in a straight line and when the light from the sun hits a gas molecule, the light is absorbed and then radiated. Light is made up of a spectrum of colours ranging from red which has the longest wavelength to blue which has the shortest. The colours with a longer wavelength pass through such as red and orange and those with a shorter wavelength are absorbed such as blue and violet (violet has the shortest wavelngth in the visible spectrum). These colours are then scattered. Because our eyes are more sensitive to blue light because it is one of the primary colours then we see it as blue.

Answer 3

You what?! I agree with whoever was shocked at the two people who think the sky is blue because light is reflected off the sea!!! The sea only appears blue from the reflection of the blue sky above!!!! ...but sorry, I don't know the reason why the sky itself is blue...

Answer 4

the sky is blue because the blue waves in the suns rays are being refracted off of the the atmosphere. Thus you get a blue sky

Answer 5

So far only RHA was the only correct answer. nitrogen makes up for the most of our atmosphere, the sky is just as blu ein the dessert as it is in the middle of the ocean. there are no cosmic mirrors and if green house gases reflect light the sky should be getting bluer right, well it isn't. Nitrogen is the answer. don't believe me??
http://www.why-is-the-sky-blue.tv/why-is-the-sky-blue.htm
http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html
http://world.std.com/~mmcirvin/bluesky.html

Answer 6

The sky is many colours not just blue :)

Answer 7

I thought it was the angle at which the light from the sun was coming through the atmosphere, which also changes and creates all the other colours, like red in the evening when the sun is coming through at a lower angle. I have a good diagram, but cant draw it here...!! Its about wavelengths and stuff... :)

Answer 8

Soon it will be grey from all the gas leaking out of everyone's brains for questions like this.

Oxegyn, carbon monoxide, H20...all key factors.

Answer 9

Why are clouds white, why is grass green? Because they are! Either you believe God created them or you believe that scientifically that's just the way they are. Doesn't need a reason!

Answer 10

I know, instead of getting a bunch of incorrect answers from the little kids on this site, why don't you look it up yourself? You might even learn something...gasp.

Answer 11

nitrogen atoms refracting light wavelengths in the blue spectrum