Salinity (noun, “Suh-LIN-ih-tee”)
Salinity is a measure of saltiness. The extra salt in a physique of water, the upper its salinity. Contemporary water is lower than 0.1 p.c salt. Ocean water is, on common, about 3.5 p.c salt. The Lifeless Sea has famously excessive salinity. It’s about 30 p.c salt! All that salt makes the water extraordinarily dense. Because of this, swimmers can simply float in it.
Water that’s too salty shouldn’t be secure to drink. It additionally shouldn’t be secure to make use of for watering crops or many different functions. However salt water within the oceans makes up about 97 p.c of all water on Earth. Another sources of water, corresponding to groundwater, may have very excessive salinity. To faucet into these water sources, engineers are developing with new methods to filter salt out of water. This course of is named desalination.
In a sentence
An estuary is a spot the place a freshwater river meets the ocean, the place water has a better salinity.
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