Chapter 16

Chapter 16 - Chapter 16: The Oceans, Coastal Processes, and...

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Chapter 16: The Oceans, Coastal Processes, and Landforms I. Introduction I.a. About 40% of Earth's population lives within 100km of coastlines, 50% of people live in coastal areas in the U.S. I.a. 50% of world's coastlines are at some risk of loss through erosion, rising sea level, or pollution I. Global Oceans and Seas I.a. Chemical Composition of Seawater I.a.i. Water is "universal solvent", dissolves at least 57/92 elements in nature and most are found in water as dissolved solids or solutes I.a.i. Salinity : concentration of dissolved solids, dissolved solids by volume I.a.i. Ocean Chemistry I.a.i.1. Results of exchanges among seawater, atmosphere, minerals, bottom sediments, and living organisms I.a.i.1. Significant flows of mineral-rich water enter the ocean through hydrothermal (hot water) vents in ocean floor, called "black smokers" I.a.i.1. 7 major elements dissolved in seawater: chlorine, sodium, magnesium, sulfur, calcium, potassium, and bromine I.a.i.1. Gases dissolved in seawater: carbon dioxide, nitrogen, oxygen, and trace elements I.a.i.1. Major mineral mining for sodium chloride (salt), magnesium, and bromine I.a.i. Average Salinity: 35
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Chapter 16 - Chapter 16: The Oceans, Coastal Processes, and...

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