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Oceanography and the Beginnings of Life

by: Ayla Sherrill

Oceanography and the Beginnings of Life OCN 150 - 003

Marketplace > University of North Carolina - Wilmington > Oceanography > OCN 150 - 003 > Oceanography and the Beginnings of Life
Ayla Sherrill
Introduction to Oceanography
Sharon S Hoffmann

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About this Document

What is oceanography? How did the oceans, moon, and life form on early Earth? Go back to the first few weeks of Oceanography to review these topics before the final.
Introduction to Oceanography
Sharon S Hoffmann
Class Notes
Oceanography, beginning, symbiotic, symbiosis, moon, creation, meteors, Water, origin, life, Miller, stanley, experiment, photosynthetic, study
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This 2 page Class Notes was uploaded by Ayla Sherrill on Sunday December 6, 2015. The Class Notes belongs to OCN 150 - 003 at University of North Carolina - Wilmington taught by Sharon S Hoffmann in Fall 2015. Since its upload, it has received 30 views. For similar materials see Introduction to Oceanography in Oceanography at University of North Carolina - Wilmington.


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Date Created: 12/06/15
What is oceanography Study of the oceans 0 Geological 0 Chemical 0 Physical 0 Biological Why is Oceanography important Water makes up 71 of the planet Weather and climate Food Habitat Energy Hazards Recreation Pacific largest and deepest Atlantic second largest History of oceanography Divided history 0 Early explorations ca1400CE 0 Age of Discovery ca1400 1800CE 0 Modern Period ca1800 Present Origins of oceanography Origins lie in voyages Technology advancements led to beginning of oceanography People of pacific islands found islands based on wave curves Size and Shape of Earth Eratosthene had a technique for calculating the circumference of the world about 200 BC Ptolemy s Map 0 First globed map 0 Used longitude and latitude Chinese invented magnetic compass Middle Period Exploration Mercator map Telescope invented First barometer Sexta nt Cook s Voyages oceanographic purposes James Cook arguably the first true marine scientist Mapped and adventured Very accurate complete notes Used marine chronometer 0 John Harrison Modern Period Comprehensive systematic study of oceans globally Ben Franklin s map ofthe gulf stream Maury Bathymetric charts of Atlantic first map of ocean currents and depth 1830 s Darwin s The Beagle 1872 1876 HMS Challenger 0 First purely oceanographic study voyage I Found 4000 new species I Took many notes I Found Challenger s Deep Deep Sea Drilling Gives us a picture ofthe ocean floor along with the history Satellite Oceanography Looks at ocean over a few days Making of the Universe and Oceans Universes expanded rapidly 0 Hydrogen popped into being Universe slowed o Gravity made things clump stars 0 HH He nuclear fusion I Puts out energy Fred Hoyle o Named this the Big Bang Theory 0 HeHeHe C o HeHeHeHe Oxygen Star death made elements Nebula cloud of gases and space dust 0 Nursery for young stars Dust and rocks and elements came together to form a planet 4567 billion years ago 0 Accretion adding and adding by force Meteorites allow us to date the universe How did the moon form Small planet smashed into Earth 0 Gravitation pulls debris towards earth and some debris formed the moon I Giant Impact Hypothesis 0 Took about a month possibly What s Denser gas or rock Gases in early Earth were mainly water vapor 0 Along with Carbon dioxide Hydrogen Methane Ammonia Gases were part of the nebula that Earth formed from Origin of Earth s Ocean Water vapor released from volcanoes outgassing Condensed as rain 0 Accumulated in low spaces Water was in comets 0 These comets crashed into Earth I About half of the ocean s water comes from comets When did life first emerge on Earth Stanley Miller 0 Made organic molecules in a test tube that resembled early earth 0 Found that the chemicals and conditions on earth could create amino acids building blocks of proteins 0 Found that photosynthetic bacteria could form These photosynthetic bacteria thrived in the C02 rich environment but put out a lot of 02 o This led to the evolution through symbiosis of prokaryotic bacteria


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