Why is ocean water salty? Detailed answer

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Why is ocean water salty? Detailed answer

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Why is ocean water salty?

From time to time we are faced with some questions related to our Earth, which seem to us mysterious and for which no answers have yet been found. For example, the presence of salt in the water of the oceans. How did she get there?

Yes, we just do not know how the salt got into the ocean! Of course, we know that salt dissolves in water and that it enters the oceans with rainwater. Salt from the surface of the Earth is constantly dissolved and ends up in the ocean.

But we don't know if we can explain the huge amount of salt in the oceans. If all the oceans were dried up, the remaining salt could be used to build a wall 230 km high and almost 2 km thick. Such a wall could circle the entire globe along the equator. Or another comparison. The salt of all the dried up oceans is 15 times the volume of the entire European continent!

The common salt that we use every day comes from sea water, salt springs or from the mining of rock salt deposits. Sea water contains 3-3,5% salt. Inland seas, such as the Mediterranean Sea, the Red Sea, contain more salt than the open seas. The Dead Sea, occupying only 728 sq. km., contains approximately 10 tons of salt.

On average, a liter of sea water contains about 30 g of salt. Deposits of rock salt in various parts of the earth were formed many millions of years ago as a result of the evaporation of sea water. For the formation of rock salt, nine-tenths of the volume of sea water must be evaporated; it is believed that inland seas were located on the site of modern deposits of this salt. They evaporated faster than the new sea water came in - that's where the deposits of rock salt appeared.

The main amount of edible salt is extracted from rock salt. Usually mines are laid to salt deposits. Clean water is pumped through the pipes, which dissolves the salt. Through the second pipe, this solution rises to the surface.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why are we sleeping?

There is not a single living being who would not need sleep or complete rest during the day. If you want to know why, try going without sleep for a long time. It turns out that your brain and your body are too tired to work properly. You will become irritable and find it difficult to think clearly or focus on your work. So sleep is simply the time it takes for your body's cells to recuperate after a day's work and accumulate energy reserves for the next period of activity.

One of the indisputable facts about sleep is that we are unconscious during sleep. We are not aware of what is happening around us. But this does not mean a complete cessation of life. The vital organs continue to work during sleep, but most vital functions slow down. Our breathing, for example, becomes slower and deeper. The heart beats slower and blood pressure drops. The arms and legs relax and the muscles that control body position rest.

It would be impossible to relax to such a degree if we were awake. Therefore, sleep does for us what even the most peaceful rest will not give.

During sleep, body temperature drops, which is why people take shelter at night. But even though we are unconscious, many of our reflexes continue to work. For example, if someone tickles your foot, you will move your foot away in your sleep, or you may even brush a fly off your forehead in your sleep! You are doing this completely unconsciously.

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