Sci-Plate Tech
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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| asthenosphere | the soft layer of the mantle on which the lithosphere floats
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| basalt | a dark colored, igneous rock that has a fine texture and is found in the oceanic crust
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| conduction | the transfer of heat within a material or between materials that are touching
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| continental drift | the hypothesis that the continents slowly move apart
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| convection | the transfer of heat by movement of a fluid
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| convection current | the movement of a fluid, caused by the difference in temperatures that transfers heat from one part of the fluid to another
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| convergent boundary | a plate boundary where two plate connect
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| crust | the layer of rock that forms the Earth's outer surface
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| deep-ocean trench | a deep valley along the ocean floor beneath which oceanic crust slowly sinks into the mantle
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| density | the amount of mass in a givern space; mass per unit volume
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| divergent boundary | a plate boundary where two plates break apart from each other
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| fault | a break in Earth's crust where masses of rock slip past each other
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| fossil | a trace of an ancient organism that has been preserved rock
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| granite | a light colored igneous rock that is found in the continental crust
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| inner core | a dense sphere of solid iron and nickel at the center of the Earth
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| lithosphere | a rigid layer made up of the uppermost part of the mantle and the crust
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| mantle | the layer of hot, solid material between the Earth's crust and core
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| mid-ocean ridge | an underwater mountain
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| outer core | a layer of molten iron and nickel that surrounds the inner core of Earth
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| plate | sections of the Earth
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| pressure | the force exerted on a surface divided by the area over which the force is exerted
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| plate tectonics | the theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle
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| radiation | the transfer of energy through space
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| rift valley | a deep valley that forms where two plates move apart
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| sea-floor spreading | the process by which molten material adds new oceanic crust to the ocean floor
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| sonar | a device that determines the distance of an object underwater by recording echoes of sound waves
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| subduction | the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle
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| transform boundary | a plate boundary where two plates move past each other in opposite directions
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