If you’ve ever wondered why the sea is so salty, you’re not alone. More than two-thirds of the Earth’s surface is covered with water. Of that, 97% of it is salty seawater. The remaining 3% is fresh water, which is trapped in glaciers and ice caps. Fresh water also contributes a great deal to the saltiness of the ocean, which has the same chemical composition as seawater.
During primeval times, the sea was not nearly as salty as it is today, but that didn’t stop rains from washing the rocks away. That rain dissolved the mineral salts of rock surfaces, transporting them to the seas. Today, rivers and streams from the United States discharge over 225 million tons of dissolved solids and 513 million tons of suspended sediment each year. The yields from other land masses vary widely, from 6 tons per square mile for Australia to 120 tons per square mile for Europe.
The reason the ocean is so salty is that rocks on land contribute a large amount of dissolved sodium and chloride ions to the sea. Rainwater is slightly acidic and erodes rocks, carrying minerals and dissolved salts with it. These minerals eventually end up in the ocean, where they add a lot of salt. This is an excellent example of how rocks and land make the ocean salty. It’s not hard to understand why the sea is so salty – it’s simply a natural phenomenon.
Another explanation for the high salinity of the sea is that the salt is absorbed into the ground by rainwater. These water sources then flow into rivers and lakes, where they carry the salt with them. This salt accumulates in the ocean and eventually becomes too much for human consumption. So, how can we make our oceans less salty? Read on to discover more. And don’t forget that oceans will always be as salty tomorrow as they are today.
It’s not possible to know exactly what causes salt in the ocean. In fact, the salt in the ocean could be 150 meters thick and 166 meters tall! Salt is produced by the deposition of rock and land in the oceans. In contrast, freshwater contains just a tiny bit of salt per cubic foot. In short, salt makes the ocean salty. The salt in the ocean is made up of different mineral salts.
So, what causes the ocean to be so salty? Rain is a major cause. Rain carries mineral ions from the land and dissolves carbon dioxide, leaving behind salt. It then runs into rivers and streams, where it eventually reaches the ocean. These salts then enter the ocean as rainwater. If the oceans aren’t salty, they can’t be that salty. You may think it’s something in the ocean that’s wrong with your body.
In general, evaporation increases the concentration of dissolved minerals, causing the water to become more dense. However, the evaporation rate at hot regions is much higher than the amount of rainfall. In addition, some isolated bodies of water become hypersaline because of evaporation. Consequently, salt makes the water denser, which is why you can float in the Dead Sea much easier than in the ocean. Salt has often been hard on man and equipment alike. Look at commonly worn era swords of seafarers and and you can see the toll it takes.