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20 Cards in this Set
- Front
- Back
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Salinity is a measure of....
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the amount of salt in water
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The worldwide average of seawater salinity is ___ parts per thousand.
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34.7
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Salinity is measure in a unit called....
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parts per thousand
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34.7 parts per thousand is the same thing as ____%
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3.47
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The saltier water gets, the density .....
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increases
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When seawater gets very salty and thus dense, what does it do?
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Sinks
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When salty, dense seawater sinks, what does that cause?
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Deep water movement (A current is set in motion.)
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When sea ice forms near earth's poles, does salt freeze in the ice?
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No. It's excluded.
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Whe sea ice forms, and salt is excluded from the ice, what happens to the salinity of the surrounding water?
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It increases
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When sea ice forms, the resulting very salty cold water tends to....
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sink
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Why is it significant that cold, very salty water at the poles sink when sea ice forms?
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It sets up deep-water oceanic circulation.
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Deep circulating sea water eventually bumps into land and resuraces, warms picks up fresh water, becomes less salty and flows back to the poles, closer to ocean's surface. What does the mean for Western Europe?
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Keeps Europe warm.
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Without oceanic circulation, what would Europe's climate be like?
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Frigid
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If climate change prevents polar sea ice from forming, what could happen to Europe?
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Go into an Ice Age
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What tends to take priority with regard to density of sea water -- the temperature of water or the salinity of water?
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salinity
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If you experimentally find that 100 g sea water has 3.33 g salt in it, then what is the salinity of the sea water?
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33.3 parts per thousand (0/00)
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What happens to salinity of seawater at river mouths (compared to the ocean)?
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It is less saline
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What happens to salinity of seawater after a heavy rain downfall (compared to the ocean)?
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It is less saline.
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What happens to salinity of seawater when evaporation is occurring (compared to the normal ocean)?
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It is more saline.
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What happens to salinity of seawater when sea ice is forming (compared to the normal ocean)?
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It is more saline.
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