Q:

Why is the ocean salty?

A:

Quick Answer

As rain is formed in the atmosphere, it absorbs carbon dioxide, making it slightly acidic when it falls on the land. This rain physically and chemically erodes the rock and carries various minerals and salts as it runs off into the ocean.

Know More
Why is the ocean salty?
Credit: Magnus Brath Flickr CC-BY-2.0

Full Answer

As the water re-evaporates into the atmosphere, the salt is left behind in the ocean. Over a long time period, the salt accumulates and becomes more concentrated. According to the U.S.G.S., about 3.5 percent of the weight of seawater comes from the dissolved salts. In addition to surface runoff, hydrothermal vents on the ocean ridge also contribute a large amount of salt and minerals to the ocean, adding to the overall salinity.

Sources:

  1. water.usgs.gov

Is this answer helpful?

Similar Questions

  • Q:

    Why is ocean water salty?

    A:

    Ocean water is salty primarily due to the large amounts of chloride and sodium on land which are dissolved by rainfall and carried to the sea by rivers and streams. Hydrothermal vents and underwater volcanoes located on the seabed also contribute dissolved salts to the ocean.

    Full Answer >
    Filed Under:
  • Q:

    Why are deserts hot in the day and cold at night?

    A:

    The heat that radiates from the sun and heats up the land begins to heat up the air and then escapes into the atmosphere due to the lack of clouds and humidity. This is the main reason that deserts can be hot during the day but cold during the night.

    Full Answer >
    Filed Under:
  • Q:

    Why is rain important?

    A:

    Many forms of land-based life depend on fresh water, which comes from rain. Humans depend on rain to fill aquifers. Rain also plays a role in shaping the landscape and bringing nutrients to the ocean.

    Full Answer >
    Filed Under:
  • Q:

    What is an ocean current?

    A:

    An ocean current is "any more or less permanent or continuous, directed movement of ocean water that flows in one of the Earth's oceans," according to ScienceDaily.com. Currents are created by a variety of forces.

    Full Answer >
    Filed Under:

Explore