2006-10-08 18:31:46 · 10 answers · asked by oro916 1 in Science & Mathematics ➔ Earth Sciences & Geology
It is not from the sky. It is how light is scattered in the atmosphere and from reflecting off of sand. Check the sources I listed for indepth answers.
BTW, the sky is blue because the blue wave lenghts are more scattered than green or red (the three colors that our eyes respond to the strongest).
2006-10-08 18:47:01 · answer #1 · answered by ninecoronas2000 5 · 0⤊ 0⤋
(m)
a more coherent explanation, at least for its surface, is that the colour of the surrounding sky reflects itself on the sea and gives it its colour.
As to the deeper layers, the blue colour is given by the penetrating sunbeams. When a sunbeam hits the water surface, it doesn’ stop its course at once, but splits into different hues as it goes deeper. The colour yellow disappears along the first meters, then the red fades, and finally the green. The only colour left is blue.
So, what gives the sea its different hues are its variations in depth. The shallower it is, the lighter the blue (we can even have green); the deeper it is, the darker the blue (it can even get black).
2006-10-08 18:54:00 · answer #2 · answered by mallimalar_2000 7 · 1⤊ 0⤋
Sunlight is composed of all the colors of the spectrum. When you perceive the sea to be blue it's because the water is absorbing all of the spectrum except the blue which is reflected to your eyes. The same is true for a green tree, the object absorbs all but the green and you perceive the green. You don't really see things when you look at them, you only see whats left of the light that reflected off of them.
2006-10-09 15:13:28 · answer #3 · answered by gone 7 · 0⤊ 0⤋
Water strongly absorbs infrared radiation. As infrared radiation is next to red-colored light on the EM spectrum, a small amount of visible red light is absorbed as well. This results in pure water appearing slightly blue, when seen in mass quantities such as a lake or ocean. The blue color can easily be seen as one sees the blue color of the sea or a clear lake under an overcast sky, which means that it is not a reflection of the sky. In practice, the color of water can vary strongly, depending on impurities. Limestone turns bodies of water turquoise, while iron compounds turn it red/brown and copper compounds create an intense blue. Algae commonly colors water green.
2006-10-09 02:43:42 · answer #4 · answered by catzpaw 6 · 0⤊ 0⤋
Blue is the colour that it reflects the best.
Water is the best at reflecting in the blue wave length
2006-10-09 01:09:02 · answer #5 · answered by aiddogs5 4 · 0⤊ 0⤋
The sea is blue because the sky is blue....something to do with absorbtion
2006-10-08 18:41:50 · answer #6 · answered by Caroline P 1 · 0⤊ 0⤋
Because the natural color for water is blue. Nothing to do with the sky. And it is more apparent when you have water in large volumes.
2006-10-08 18:34:14 · answer #7 · answered by Gregor II 2 · 0⤊ 0⤋
The sun makes it look blue
2006-10-08 18:47:48 · answer #8 · answered by young_steffers 3 · 0⤊ 0⤋
Because it is reflecting the sky. Same reason why it is grey on a cloudy/stormy day.
2006-10-08 18:32:41 · answer #9 · answered by somedays_lovely_dreamer 3 · 0⤊ 0⤋
the reflection of the sky
2006-10-08 18:33:31 · answer #10 · answered by KK 4 · 0⤊ 0⤋