Oceanographyintro

Oceanographyintro - Avg stadia gives circumference = 39,400...

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Planet Earth ~3/4 area = ocean Oceans contain 97.5% of surface water Mariana Trench 11,022 m Average depth = 3800 m
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1. All matter energy a single infinitesimal point. 2. Space is created in a sudden rapid expansion. 3. As energy density decreases, matter begins to form. Primarily H. 4. H is concentrated by gravity, ultimately forming stars 5. Heavier elements form inside stars, released in supernovas. 6. More stars and planets form from the debris.
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Nebula forms, H is collected by heavier particles Gravitational condensation, rotation begins Density high enough to cause fusion System “cleaned” of smaller debris through time
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Eratosthenes Head Librarian 225 BC – 192 BC
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Unformatted text preview: Avg stadia gives circumference = 39,400 km Actual = 40,075 km Latitude Latitude calculated by measuring angle to North Star or to other celestial object Longitude Longitude is found by measuring exact time of Noon and comparing to reference latitude noon time. Earth rotates 15 degrees / hour Polynesian Diaspora 450 – 600 AD Vikings 600 AD – 1100 AD Prince Henry of Portugal 1451 – 1470 AD Columbus Excellent maps, Collected scientific information. Matthew Maury PHYSICAL GEOGRAPHY OF THE SEA, 1855 Zheng He 1421 – Circumnavigator? Oceanography Physical Oceanography Marine Geology Marine Biology Marine Chemistry...
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