Earthquakes,Volcanoes and plate tectonics
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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| Earthquake | Any shaking or rapid motion of Earth's solid outer layers
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| Fault | a zone of weakness or a crack where previous motion occured.
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| Focus | the place underground where the break first occurs
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| Epicenter | the location at the Earth's surface just above the focus
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| Seismometer | an instument that detects vibrations of the ground
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| P-waves | *travel faster than s-waves
*"p" stands for primary/push-pull(describes the ground's movement
* pass through liquid
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| S-waves | * "s" stands for secondary or side-side(ground movement
*motion is like traveling down a rope
*pass through solids
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| crust | outermost layer of our planet
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| Moho/Mohorovicic discontinuity | the layer of earth were earthquake waves suddenly get faster
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| refraction | bending of the waves
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| shadow zone | a ring shaped region caused by bending of the waves at the mantle-core boundary
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| Ring of Fire | A ring of the most # of volcanoes and seismic events around the edges of the Pacific Ocean
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| tsunami | A big wave usually caused by a earthquake or landslide under water
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| Alfred Wegener | The scientist who came up with the theory of continental drift
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| Continental Drift | the theory that all the continents fit together and eventually broke into continents
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| Pangea | "the super continent",or when all continents were together
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| Convergent boundary | colliding plates
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| Divergent boundary | separating plates
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| subduction zone | when a oceanic plate dives underneath a continental plate
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| trenches | linear troughs caused by subduction zones
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| island arcs | island groups caused by rising magma plumes from decending plates
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| Transform boundary | where plates slide past each other
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| mid ocean ridges | where upwelling magma creates new crust that moves away from the ridge in both directions
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| rift zone | also known as a divergent plate boundary
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| conduction | allows energy to flow through solids,very slow process
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| convection | distibutes heat through solids
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| hot spot | when a lithospheric plate moves over a source of magma,to form volcanoes
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Created by:
SaraW
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