why are the oceans and dead sea salty?

Answer 1

First answer is right.

Tiny amounts of salt dissolve as the rain flows over mountains, into rivers and down to the sea. Then the water evaporates into clouds leaving the salt. And it rains on the mountains again.

This transports more and more salt to the oceans over millenia. But the rain on mountains is always fresh, evaporated water.

The dead sea is the same because there is no way for water to flow out of it.

Answer 2

In these seas, there's no major outlet for the water to flow through. Therefore, the only way water escapes is by evaporation. Basically, the water flows in through rivers, carring impurities. Then the water evaporates and leaves the impurities behind. If there was a major outflowing river, all those impurities would be carried out with the discharge.

Answer 3

The constant movement of the water causes erosion and then later turns to salt (when an acid and base are mixed together, they make water and salt). Then, the water is evaporated, leaving the salt. This is a continuous process, and even though it rains, there is always more salt than water.

Answer 4

Large salt deposits beneath the ocean.

Answer 5

thats because the rivers arent and something needs to be salty.

Answer 6

The Earth is 97% saltwater.That's why.

Answer 7

Because it's the puddles of all the tears from heaven

Answer 8

Here is a simple explanation:

http://ga.water.usgs.gov/edu/whyoceansalty.html

Answer 9

because of the rocks

Answer 10

fish sweat