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19 Cards in this Set
- Front
- Back
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Plate Tectonics
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Theory of how the Earth's lithosphere moves
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Divergent Boundary
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A region where two plates are moving away from each other
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Convergent Boundary
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A region where two plates are moving towards each other
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Transform Boundary
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A region where two plates are moving laterally along each other
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Sea-floor Spreading
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A divergent boundary that creates new ocean floor through the process of convection current
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Continental Drift
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Unsupported hypothesis of the movement of the Earth's continents
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Pangaea
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Super continent that existed prior to our current continent configuration
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Subduction
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A convergent boundary where one plate moves below the other plate
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Oceanic Crust
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Thinnest portion of the Earth's outer layer, made mainly of basalt
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Continental Crust
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Thickest portion of the Earth's outer layer, made mainly of Granite
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Convection CUrrent
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The driving force behind plate tectonics
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Convection
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The movement of currents within fluids, major mode of heat and mass transfer
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Conduction
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The transfer of heat between two materials in direct contact with each other
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Mid-Ocean Ridge
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A structure formed from seafloor spreading due to divergent activity
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Rift Valley
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Pulling apart of crust due to tenstional forces due to diveregent activity
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Trench
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Deepest part of the ocean in a subduction zone formed during convergent activity between two oceanic plates or between a continental and oceanic plate
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Earthquake
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Result of sudden energy release in the Earth's crust creating seismic waves, usually located at or near fault lines
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Volcano
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Opening or rupture in the Earth's crust that allows molten rock to escape, usually located near boundaries
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Hot Spot
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A location in the middle of a plate where volcanic activity is found
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