Why is ocean water salty?
We all know that the earth's oceans have a salty taste. The average ocean water is about 3.5% salinity, which is about the same as fresh water. However, the salt content of seawater varies greatly around the globe. Much of the ocean water that is closer to the poles is quite salty, and along the shores of the continents, ocean water is quite fresh.
Why is the water in the ocean salty so salty?
The oceans have a salty “solution” of about 35 grams of salt per kilogram of water. The chemical makeup of the water makes up 0.5% of the ocean’s total mass and the oceans are able to keep the salt in solution due to the very high energy needed to separate the two. In addition, the salt is held in place by many different processes, including the action of the wind and the motion of the earth’s tectonic plates.
Why is the water in the ocean salty?
To understand the salty nature of the oceans, we must first understand how the oceans came to be salty. The most commonly accepted explanation is that the oceans formed about 4.5 billion years ago as the molten earth’s crust cooled. The oceans were formed when the lighter, salt-rich minerals in the earth’s crust sank to the bottom of the ocean. As the minerals sank into the ocean, their salt content increased, making the water more salty over time.
What makes the water in the ocean salty?
Rainwater and snowmelt are the main sources of water for surface waters of rivers and lakes. Rainwater and snowmolets contain a lot of minerals, salts, and organic matter that make their way into the ocean. Rainwater and snowmelt also create a “marine snow” that is deposited on the ocean floor. Marine snow is a combination of minerals, organic matter, and animal waste.
Why is the water in the oceans salty?
The water in the oceans is salty because of the minerals dissolved in it. The oceans contain about 35 grams of salt per kilogram of water. This is about 3% of the weight of the water. Of the ocean's salt content, about 90% is dissolved in the oceans' waters. The remaining 10% is stored in the ocean's sediment.