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Plate Tectonics Arc

force to make convergent boundaries compression
force to make divergent boundaries tension
force to make transform boundaries shearing
describe the movement of the plates in a convergent boudary pushing together
describe the movement of the plates in a divergent boudary pulling apart
describe the movement of the plates in a transform boudary moving in opposite directions
are convergent boudaries constructive or destructive? destructive
are divergent boudaries constructive or destructive? constructive
are transform boudaries constructive or destructive?
whats a constructive boundary? a bounday where new crust is created
whats a destructive boundary? a bounday where crust is destroyed or changed
what force causes a normal fault? tension
what force causes a reverse fault? compression
what force causes a strike-slip or lateral fault? shearing
theory of continental drift continents have moved slowly to their current locations
who originated the idea of continental drift? alfred wegner
what is the name of the super continent? pangea
evidence that supports continental drift puzzlelike fit of the continents; fossil evidence; rock and climate clues
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.
who's idea was seafloor spreading? Harry Hess
lithosphere Rigid layer of the crust and upper part of the mantle. Divided into plates
asthenosphere Plastic like layer of Earth (in the mantle) on which the lithospheric plates float and move.
composite volcanoes steep sides; sometimes erupt violently
cinder cone volcanoes small cone formed by tephra; moderate violent eruptions
shield volcanoes sloping sides; largest type of volcano basaltic lava
subduction a dense oceanic plate converges wit a less dense continental plate and the oceanic plate sinks under the continental plate
tsunami Powerful seismic sea waves that begin over an ocean floor earthquake
what causes a tsunami? earthquake on the ocean floor
weathering process in which rock break down
erosion process in which rock particles are carried
seismic waves earthquake waves that are transmitted through materials in Earth and along the surface of the Earth
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.
Created by: is2903