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Questions and Answers
Which process contributes to the salinity of the ocean?
Which process contributes to the salinity of the ocean?
- Advection
- Weathering of rocks (correct)
- Formation of ice
- Evaporation of ocean surface waters
What unit is commonly used to express salinity?
What unit is commonly used to express salinity?
- Grams per liter (g/L)
- Parts per thousand (ppt) (correct)
- Parts per million (ppm)
- Milligrams per liter (mg/L)
Which factor does NOT increase the salinity of the oceans?
Which factor does NOT increase the salinity of the oceans?
- Extraction of freshwater from the ocean (correct)
- Formation of ice
- Advection
- Evaporation from the ocean's surface waters
What can small variations in ocean surface salinity affect?
What can small variations in ocean surface salinity affect?
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What salinity value is considered the upper limit for 'brackish water'?
What salinity value is considered the upper limit for 'brackish water'?
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Study Notes
Ocean Salinity
- Evaporation of water contributes significantly to ocean salinity by leaving salts behind, thus increasing concentration.
- A commonly used unit to express salinity is practical salinity units (PSU), which reflect the total dissolved salts in seawater.
Factors Affecting Salinity
- Precipitation does NOT increase ocean salinity; rather, it dilutes the salt concentration in seawater.
- Minor variations in ocean surface salinity can affect ocean circulation, marine ecosystems, and climate patterns.
Brackish Water
- Salinity values for brackish water typically range from 0.5 to 30 PSU, with the upper limit being around 10 PSU, indicating a mix of freshwater and seawater.
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