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Structure of the Earth

Chapter 15 powerpoint

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Environmental Science
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geology
Plate Tectonics
Structure of the Earth
Subduction
Crust
Rock cycle
Convergent boundary
Continental crust
Tectonics
lithosphere
Volcano
Igneous rock
Environment

Geology Chapter 15 Geology The science devoted to the study of dynamic processes occurring on the Earth?s surface and in its interior Essential Question #1 What are the characteristics of the three major concentric zones of earth? Three Concentric Zones Core ? innermost zone Extremely hot Solid inner part surrounded by liquid molten material Mantle ? middle zone Outermost part is solid rock Asthenosphere = inner part made of hot partly melted pliable rock that flows Crust ? outermost zone Continental crust Oceanic crust Earth?s Crust and Upper Mantle Lithosphere = Crust and outermost Mantle Fig. 15-3, p. 337 Spreading center Ocean trench Plate movement Subduction zone Oceanic crust Continental crust Continental crust Material cools as it reaches the outer mantle

continental drift

Subject: 
Environmental Science
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geology
Plate Tectonics
Structure of the Earth
Asthenosphere
lithosphere
Crust
Tectonics
Mantle
Divergent boundary
Submarine earthquake

Turner Burwick 12/2/2009 Period 7 Vocabulary Continental drift - the lateral movement of continents resulting from the motion of crustal plates. Pangaea - The landmass that existed when all continents were joined, from about 300 to 200 million years ago. Seafloor spreading - a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out. Plate tectonics - a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past adjacent plates.
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