why sky and occean looks blue?

Answer 1

Two words: Rayleigh scattering. This phenomena is basically the fact that light from the sun (white light initially) becomes scattered as it travels towards the Earth. Turns out our atmosphere is best at scattering higher energy wavelengths, which is the color blue and violet on the visible spectrum. This is why the sky looks blue midday, because blue light is being scattered actively into the surrounding area. During the evening, red light becomes scattered due to the longer distance the light has to travel as the Sun is now further from the Earths surface (to you that is). Hence more and more red light becomes scattered, along with all the blue light, therefore you see red and yellow sunsets surrounded by a deep blue sky.

The oceans are blue because the sky is either reflected off the surface, or mostly red light is absorbed by the water, making the oceans seem blue.

However, it is good to note some oddly-colored seas:
The Red Sea often looks red because of red algae that live in this sea.
The Black Sea looks almost black because it has a high concentration of hydrogen sulfide (which appears black).

Answer 2

The answer to why the sky is blue isn't quite correct. The sky is blue not because the atmosphere absorbs the other colors, but because the atmosphere tends to scatter shorter wavelength (blue) light to a greater extent than longer wavelength (red) light. Blue light from the sun is scattered every which way, much more so than the other colors, so when you look up at the daytime sky you see blue no matter where you look. This scattering is called 'Rayleigh scattering'; the amount of scattering goes as the frequency of the light to the 4th power. By the way, this effect is most prevalent when the particles that do the scattering are smaller than the wavelength of light, as is the case for the nitrogen and oxygen molecules in the atmosphere. "Now we are in a position to figure out why sunsets are reddish! When the sun is setting, the light that reaches you has had to go through lots more atmosphere than when the sun is overhead, hence the only color light that is not scattered away is the long wavelength light, the red. "We can also answer why clouds, milk, powdered sugar and salt are white. The particles in these materials that are responsible for scattering the light are larger than the wavelength of light. Consequently, all colors of light are scattered by more or less the same amount. Much of the scattering in milk is due to the lipids (fat). If you take out the fat, the milk will not scatter as much light; that is probably why skim milk looks the way it does. The ocean looks blue because red, orange and yellow (long wavelength light) are absorbed more strongly by water than is blue (short wavelength light). So when white light from the sun enters the ocean, it is mostly the blue that gets returned. Same reason the sky is blue." In other words, the color of the ocean and the color of the sky are related but occur independently of each other: in both cases, the preferential absorption of long-wavelength (reddish) light gives rise to the blue. Note that this effect only works if the water is very pure; if the water is full of mud, algae or other impurities, the light scattered off these impurities will overwhelm the water's natural blueness. Gross then asks, "So why are sunsets orange?" Several people to wrote in to correct or clarify that comment.

Answer 3

There are several theories:
-Blue wavelengths are absorbed the least by the deep ocean water and are scattered and reflected back to the observer’s eye
-Particles in the water may help to reflect blue light
-The ocean reflects the blue sky

Most of the time the ocean appears to be blue because this is the color our eyes see. But the ocean can be many other colors depending upon particles in the water, the depth of the water, and the amount of skylight.

The colors we see depend upon the reflection of the visible wavelengths of light to our eyes. The Franklin Institute provides a good explanation of how we see color at http://www.fi.edu/color/color.html.

Wavelengths of light pass through matter differently depending on the material’s composition. Blue wavelengths are transmitted to greater depths of the ocean, while red wavelengths are absorbed quickly. Water molecules scatter blue wavelengths by absorbing the light waves, and then rapidly reemitting the light waves in different directions. That is why there are mostly blue wavelengths that are reflected back to our eyes.

Sometimes oceans look green. This may be because there is an abundance of plant life or sediment from rivers that flow into the ocean. The blue light is absorbed more and the yellow pigments from plants mix with the blue light waves to produce the color green.

Sometimes parts of the oceans will look milky brown after a storm passes. This is because winds and currents associated with the storm churn up sand and sediment from the rivers that lead into the oceans.

The ocean may also reflect the blue sky. However this is prominent only at relatively low angles and when the water is smooth..

Answer 4

The sky and ocean appear to be blue in color because the air and water separate and filter the color components of the light which pass through it. The sky allows more of the blue in the light than the other colors, so the sky appears blue. The same occurs in the water of the ocean, which gives different colors because of depth and the amount and chemical mixture of the salt in the water.

Answer 5

Due to scattering of dust particles sky look blue and ocean looks blue for the same

Answer 6

sky looks blue due to scattering of light.its the reflection of the sky that makes the sea appear blue.

Answer 7

Due to the bending of the light rays, they split in different wavelengths. Wavelengths give the colour.

Answer 8

The reflection of each other. The water is the reflection of the sky. When it gets darker the ocean gets darker.

Answer 9

well . sky calour always reflect in occean .

Answer 10

the compesition of ozone is bluish-yellow,and takes the reflection .so they are seem to blue.