Why's the sky blue, and why is water blue?

Answer 1

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 colors because the blue light has been scattered out and away from the line of sight.
http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html
In the evening, the sky sometimes looks orange or red because of air pollution. Dust and other floating particles in the air act as a filter on the sunlight. When the sun is low the air layer is thicker and the light is more filtered, so it looks yellow, orange and finally red.
http://www.sciencemadesimple.com/sky_blue.html
In detail...: Light of a particular color is determined by its frequency. The higher the frequency, the more blue it appears.
Sunlight is made up of many frequencies that when mixed together produce white light. You may have seen a rainbow or the prism experiment where the white light is split up into several colors (frequencies).
The earth's atmosphere is filled with minute dust particles that act like a filter, scattering the light rays. The rays of light with the longer wavelengths, such as reds and yellows, tend to travel more easily through the atmosphere, while the rays with the shorter wavelengths, like blues and indigos, tend to be dispersed more easily. These more easily dispersed shorter light rays are what give the sky its blue color.
Incidentally, red skies at sunrise and sunset are caused by the same phenomenon. When the light hits the Earth at an angle it has more of the atmosphere to go through; this increases the filtering effect and that is why you see a red sky.

Answer 2

The sky is blue because the molecules in the air, most of which are nitrogen, happen to be the right size to refract more light in the blue area of the spectrum than any other. The ocean is blue partly because it reflects the sky, but more because the other colors are quickly filtered out by the water.

Answer 3

Most water now-a-days is not blue anymore because of the polution. Anyways, the sky is blue because though purple is the shortest wavelength of color, blue is the one we can best see. So in essence, the sky is all colors, we can only see it as blue. The water is blue because it reflects the sky. If you see blue water in a water bottle throw it away!

Answer 4

Don't you just love the colour of the sky? :)
It's the effect of sunlight passing through the ozone layer, giving it its light-blue color. It's not always blue of course, it just depends on the angle of the sun rays, that's why there can be "red" sunrises, and you can see colour ranges from at least violet to orange during sunsets.
As for the color of the sea, it's simply reflecting the colour of the sky :)
I used to ask myself, why is the see "bluer" then, my guess would be coz of the curve that the sky takes over the sea, while the sea appears on one plane, that's why you see the sea and the far clouds in the sky touching :)

Answer 5

the sky is blue becuase of the way that light refracts off of the atmosphere. light is actually white, but the atmosphere acts as a prism, and the angle we see the sun at most of the day just happens to be blue. that's why at sundown, the sky can look pink or red. i dont know about water

Answer 6

It is the absorption of the color spectrum of light. Shine a white light through a prism and it breaks up the light into all the different colors. The skies absorb all the colors except blue as does the water. The organisms like algae in the water will affect the color of water also.

Answer 7

The water is blue, cause its a reflection from the sky. I'm sure you have noticed the water looking dark and gray on a cloudy day.

Answer 8

the sky is blue because of chemicals in the air. When light hits it, it creates a blue affect. It works sort of like a rainbow. Water is probably the same thing. Chemicals make it turn color.

Answer 9

the water is naturally a clear, but toxins and such basically die the water. As for the sky and water both being blue, it the sky reflecting on the water

Answer 10

I don't know the technical science answer, but the true and serious answer is that God is a creative God who loves to create beauty. Doesn't the blue sky and sea look gorgeous together?