EQ-lect3

EQ-lect3 - Earthquakes And other Natural Hazards Reading...

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Earthquakes And other Natural Hazards
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Reading for Wednesday: Chapter 3
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4/3/2009 topic • Plate Tectonics (continued)
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Structure of the Earth
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Structure of the Earth
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Alfred Wegener (1880-1930) Continental Drift
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Plate Tectonics • The continual motion, creation, and destruction of parts of the planet’s active surface. • Comprehensive theory; compiling all avaialble evidence; providing a mechanism
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Tectonic Plates
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Plate boundaries and motions
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outline • What are the three types of plate boundaries? • What natural hazards are associated with plate boundaries?
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Plate Motion and Boundaries divergent convergent transform -Subduction zones -Collision zones
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Divergent Boundaries
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Mid Atlantic Ridge
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Time 1 Time 2 Time 3
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Paleomagnetism
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Convergent Boundaries
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Time 1 Time 2 Time 3
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Transform Boundaries
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San Andreas Fault
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Plate Motion and Boundaries divergent convergent transform -Subduction zones -Collision zones
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outline • What are the three types of plate boundaries?
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EQ-lect3 - Earthquakes And other Natural Hazards Reading...

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