Why is the sea salty
Seventy percent of the Earth is covered with water. Which means thirty percent of the Earth is land. Most of the water is salty. Have you ever wondered why the sea is salty?
When it rains it rains, the water flows through the soil and into the rocks. The rocks contain a chemical called salt. This is how the water becomes salty. Then the water flows into the rivers and then the sea.
On a very hot day the water evaporates. The salt doesn’t evaporate. Only the water evaporates. This is what forms clouds.
Over millions and million of years the salty water has flowed into the rivers and then the sea’s, hence the water became salty.
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