The sea water around the Antarctic continent is always an extremely cold. It deserve to be together cold together -2°C.The sea water around the equator have the right to be really warm. For instance the sea temperature roughly the Persian Gulf have the right to be as warm as 36°C.

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The median temperature the the sea is about 2°C. The average surface temperature is around 17°C.

Cold water is much more dense than warmth water

Cold water is more heavier or much more dense than heat water. That method that cold water will certainly sink below warm water.

Watch this video clip demonstration

that reflects cold water sinking listed below warm water.


Salinity is a measure up of just how much salt there is in water. S water has a salinity of around 3.5% salt. That means that in a 100gm systems of braided water, over there is 3.5 grams that salt. Or, put one more way, one litre that seawater consists of 35 grams that salt - that is around 6 teaspoons.

About 90% of sea salt is sodium chloride or table salt. The other salts are comprised of chlorine, sodium, magnesium, sulphur, calcium, and also potassium. (see image)

Salt water is much more dense 보다 fresh water

Salt water has more stuff in it 보다 fresh water. The stuff would be the salt, which provides the fixed of water greater, without adding much come its volume. 

Density = mass/volume. Raising the mass by including salt increases the density. 

density of fresh water is 1gm/mldensity of sea water is 1.025 gm/ml

Seawater is a small bit an ext dense 보다 fresh water therefore it sink beneath freshwater. This means that as soon as rivers flow out right into the sea the river freshwater floats on peak of the sea water. However when the wind blows and also the sea i do not care rough, the 2 waters get all combined up.

What happens once seawater freezes?

The winter in the Arctic and the Antarctic are incredibly cold. The surface waters of the Arctic and also Antarctic seas become an extremely cold and also finally freeze.

When seawater freezes to type sea ice, salt is squeezed out and also moves down right into the water. This way that sea ice is comprised of greatly fresh water. The water just listed below the sea ice cream is saltier and more dense than the water below. Because it is much more dense, that sinks. The water the sinks is changed by surface water the comes from areas closer come the equator where it is warmer.

The cold, braided water sink to kind an ocean existing that move deep underwater toward the equator. The surface water that replaces the sinking water forms an ocean current that move from the equator toward the Arctic and also Antarctic.

So, s currents room formed since dense water (cold and salty) sinks.

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A show that hot water floats on height of cooler water. Picture source.

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Salt in seawater. Photo source

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Antarctic sea ice cream is made up of mostly fresh water. The salt has been squeezed out, and sinks right into the sea below. Image lifwynnfoundation.lifwynnfoundation.org