chapter 2 the sea floor. oceanic & continental ocean zones & habitats
TRANSCRIPT
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CHAPTER 2
THE SEA FLOOR
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OCEANIC & CONTINENTAL
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OCEAN ZONES & HABITATS
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WATER PLANET
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WATER PLANET
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FOUR MAJOR OCEAN BASINS
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SHALLOWER SEAS
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WORLD OCEANS AND SEAS
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ONE WORLD OCEAN
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FORMATION OF EARLY EARTH
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EARTH’S STRUCTURE
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CRUST TYPES
Old thinking – these slabs of crust were static, unmoving and unchanging
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CRUST IN MOTION
New thinking – these slabs of crust were in motion
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EARLY EVIDENCE OF CONTINENTAL DRIFT
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CONTINENTAL DRIFT THEORY
Theory originally failed because no one could propose HOW IT WORKED
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SONAR (1950s) MAP OF BASINS
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MID-OCEAN RIDGE SYSTEM
Under water volcanoes and new crust formingLargest geologic feature on the planet
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CONTINENTAL DRIFT THEORY
Theory accepted because CONVECTION was proposed as
the MECHANISM of PLATE TECTONICS
http://www.absorblearning.com/media/attachment.action?quick=12p&att=2775
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ORIGIN OF OCEAN BASINS
Animations/plate_tectonics.html
Use LITE disk
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Sea-Floor Spreading
http://www.seed.slb.com/flash/science/features/earth/livingplanet/plate_boundaries/en/index.html?width=570&height=475&popup=true
http://www.absorblearning.com/media/item.action?quick=12n
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GEOLOGIC HISTORY OF EARTH
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OCEANIC SEDIMENTS - AGE
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Climate and Sea Level
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Geological Provinces of Ocean
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Passive and Active Margins
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DEEP SEA FEATURES
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HYDROTHERMAL VENTS
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ORGANISMS