why ocean appears blue?

Question

in some places it appeared to be green ,is it a reflection ? give me full details.

Answer 1

It's partly a reflection, and partly because water is very slightly blue in colour, so if you have a lot of it, the result is blue. The sea in Greece looks blue even when the sky is overcast and grey, so it is definitely not just a reflection.

Answer 2

As we live on a pebble mainly covered with water, and as this pebble bears the pretty name of “the blue planet”, it seems legitimate to wonder about the reasons of a such uniformity. All the more because the blue mirage that can be seen from space is less visible when our feet are in the water.

We have all noticed that if the sky is blue, the sea dons its blue clothes, and if the sky is gray, the sea’s dressed in dark. Would it mean the sea is endowed with the ability to change its looks according to its mood? That’s not likely. On the other hand, 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).

Now you are going to ask me why there’s a red sea and a black sea? Well, the other colours we can find in the sea are related to the nature of the bottom of the sea (corals, sand,…), or to the elements in suspension in the water (earth, weeds, pollution,…).

The scattering of light by the air, or by water, is called Rayleigh scattering.

Answer 3

What happens is as the earth has different layers of atmosphere, the air at different heights is of different densities. The air also has moisture which acts as a prism and disperses light. now due to this the sky gets a blue colour. the ocean reflects the colour and appears blue. but some places oceans are shallow so the vegetation at the bottom of the ocean blurs into the blue a green colour making the ocean appear green.

Answer 4

The oceans reflect the sky, but appear different colors in different parts of the world depending on the color of the microscopic matter suspended in the water. Areas with higher counts of blue/green algae are going to appear greener than areas without. Deeper oceans take on much darker colors than shallow waters because the sunlight is absorbed much deeper into the water, rather than being reflected by the sands at the bottom.

Polluted water absorbs more sunlight, appearing darker, and colors being reflected back depend on the kind of pollution.

Answer 5

Ocean water appears blue as it reflects the light of the sky. You can prove this by taking some ocean nwater in a bottle. It won't be blue.

Answer 6

oceans and seas look blue in colour. This is because the particles in the air and water scatter the sunlight coming towards it, but all the other colours are absorbed except for the blue colour(and in some places green), this is why the sky and oceans are blue in colour, it is not reflection but dispersion of colours..

Answer 7

hi,
i have got an answer.
the question you have asked can be answered on the principle of scattering of light by molecules of the atmosphere. intensity of the scattered light increases rapidly as the wavelength decreases. when the sunlight passes through the atmosphere, blue light is scattered the most. hence the sky appears blue. this blue colour is reflected by water. hence the ocean appears to be blue

Answer 8

The ocean appear bluish in bright sunlight, because of the scattering of light in water. When sun rays penetrate into the water, violet, indigo and blue which have less wavelength are scattered by the water molecules. The scattered rays illuminate the water molecules and therefore the water in the ocean appears blue.

Answer 9

ocean appears blue due to the reflection of light

Answer 10

water appears blue because it is reflecting the sky. therefore making it appear blue. with the green reflection, first off it is only with shallow water. It is the sand color mixing with the reflection of the sky making it green. Mix blue with yellow what do you get....