🌊 Composition of Seawater
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Last updated 12:59 AM on 5/5/25
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7 Terms
1
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What is the average salinity of seawater?
35‰ (3.5%).
2
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What is the major salt in seawater?
Sodium chloride (NaCl).
3
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What are two sources of ocean salinity?
Chemical weathering of rocks and volcanic outgassing.
4
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What factors decrease ocean salinity?
Precipitation, runoff, melting icebergs, and melting sea ice.
5
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What is the average pH of ocean water?
8.1.
6
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How does CO₂ affect ocean water pH?
It decreases pH, making the water more acidic.
7
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Why is carbonic acid bad for marine organisms?
It can damage coral and dissolve shells/teeth.
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Flashcards (23)