Plate Tectonics Arc
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| force to make convergent boundaries | compression
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| force to make divergent boundaries | tension
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| force to make transform boundaries | shearing
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| describe the movement of the plates in a convergent boudary | pushing together
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| describe the movement of the plates in a divergent boudary | pulling apart
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| describe the movement of the plates in a transform boudary | moving in opposite directions
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| are convergent boudaries constructive or destructive? | destructive
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| are divergent boudaries constructive or destructive? | constructive
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| are transform boudaries constructive or destructive? |
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| whats a constructive boundary? | a bounday where new crust is created
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| whats a destructive boundary? | a bounday where crust is destroyed or changed
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| what force causes a normal fault? | tension
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| what force causes a reverse fault? | compression
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| what force causes a strike-slip or lateral fault? | shearing
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| theory of continental drift | continents have moved slowly to their current locations
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| who originated the idea of continental drift? | alfred wegner
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| what is the name of the super continent? | pangea
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| evidence that supports continental drift | puzzlelike fit of the continents; fossil evidence; rock and climate clues
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| seafloor spreading | ocean floor is pushed aside on both sides of Magma comes up through the mid ocean ridge and flows sideways carrying the ocean floor with it.
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| who's idea was seafloor spreading? | Harry Hess
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| lithosphere | Rigid layer of the crust and upper part of the mantle. Divided into plates
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| asthenosphere | Plastic like layer of Earth (in the mantle) on which the lithospheric plates float and move.
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| composite volcanoes | steep sides; sometimes erupt violently
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| cinder cone volcanoes | small cone formed by tephra; moderate violent eruptions
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| shield volcanoes | sloping sides; largest type of volcano basaltic lava
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| subduction | a dense oceanic plate converges wit a less dense continental plate and the oceanic plate sinks under the continental plate
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| tsunami | Powerful seismic sea waves that begin over an ocean floor earthquake
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| what causes a tsunami? | earthquake on the ocean floor
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| weathering | process in which rock break down
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| erosion | process in which rock particles are carried
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| seismic waves | earthquake waves that are transmitted through materials in Earth and along the surface of the Earth
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| What causes the plates to move? Describe it. | Convection Currents. Hot magma in the mantle becomes less dense and rises to the crust. As the magma cools it sinks and moves the plates along with it.
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Created by:
is2903
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