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Why is the sea salty?

posted Jan 24, 2015, 7:48 PM by ranmini@charliesresearch.com   [ updated Oct 7, 2015, 9:10 PM by Upali Salpadoru ]
A Question from Rakitha Weerasundera.

Question: Why is the sea salty?

Answer:

Soluble salts are present on land mixed with the soil. (In certain desert areas there are heaps of salt)  So when the rain water seeps and percolates through the soil, some salt gets dissolved in the running water. This ground water enters the rivers and ultimately ends up in the sea.  It has been tested and found that always some salts are present in river and natural fresh water. (Examine the label of a spring water bottle)

When this water enters the sea, only the fresh water evaporates into the atmosphere to form the clouds. The dissolved matter such as soluble salts remains in the sea water. So as time went on the sea became more and more salty.

One scientist has calculated the age of the sea by obtaining the amount of salt present today and the dividing by the amount of salt that is added in one year from the rivers.

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