Saltwater
Saltwater
Saltwater (pronounced: /ˈsɔːltˌwɔːtər/), also known as seawater, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5%. This means that every kilogram (roughly one liter by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na) and chloride (Cl) ions).
Etymology
The term "saltwater" is derived from the Old English "sealt wæter". "Sealt" is the Old English word for salt, and "wæter" is the Old English word for water.
Related Terms
- Brackish water: Water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water.
- Salinity: The saltiness or dissolved salt content of a body of water.
- Hydrometer: An instrument used for measuring the relative density of liquids based on the concept of buoyancy.
- Desalination: The process of removing excess salts and other minerals from water.
- Osmosis: A process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.
See Also
External links
- Medical encyclopedia article on Saltwater
- Wikipedia's article - Saltwater
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