Ocean101-Ch01-02 - ~71% of Earth!s surface is covered with...

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1 ~71% of Earth ! s surface is covered with ocean water . ~97% of Earth ! s water is in the oceans . “Planet Earth” or “ Planet Water ”?
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2 Some Important Concepts in Some Important Concepts in Chapter 1 Chapter 1 The water cycle (hydrologic cycle) Branches of the marine sciences (oceanography) The scientific method Formation of the universe (Big Bang) Formation of the solar system (gravitational condensation in solar nebula) Formation of Earth (accretion, density stratification) Formation of the (volcanic outgassing, comets) Life on Earth (probably began in the oceans) Other planets and moons (water? oceans?) The Hydrologic (Water) Cycle The Hydrologic (Water) Cycle Fig. 1.1b, p. 2
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3 Distribution of the Earth Distribution of the Earth ’s water, by relative volume s water, by relative volume Global Water Supply Global Water Supply 1 km 3 = 1 cubic kilometer = a cube that ! s 1 km x 1 km x 1 km 0.1 = 1/10, 0.01 = 1/100 (centi-), 0.001 (milli-) = 1/1,000, etc. Global Water Supply Global Water Supply Recharge rate vs. Withdrawal rate Rate of pollution vs. Rate of cleaning
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4 Seattle, Bellevue, and Issaquah 15,000 years ago
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5 Thurman & Trujil o, 10th ed.
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6 Fig. 1.4, p. 5 Simply put: Simply put: Always ask yourself, Always ask yourself, “How do I know How do I know what I know? what I know? and and “How will I know How will I know if I if I ’m wrong? m wrong?
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7 The Sun and planets formed by accretion accretion (smaller particles in the spinning nebular cloud clumping together to form larger objects) Formation of the Solar System: Nebular Hypothesis Eagle Nebula Eagle Nebula
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8 Fig. 1-7, p. 8 Most of the water is here We are here Earth Accretion and Earth Accretion and “Iron Catastrophe Iron Catastrophe Fig. 1.11, p. 11 (solid!)
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9 There was no oxygen (it would be made later by photosynthesis), and there were methane , ammonia , and high amounts of carbon dioxide . The Early Atmosphere:
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Ocean101-Ch01-02 - ~71% of Earth!s surface is covered with...

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