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Plate Tectonics SG

Flora - Plate Tectonics Vocabulary Study Guide Stack

QuestionAnswer
the proposed supercontinent that broke apart and formed the present landmasses Pangaea
the boundary between two tectonic plates that are moving away from each other divergent boundary
an instrument that records magnetic data that is used to study Earth’s magnetic field magnetometer
the boundary between two tectonic plates that are moving toward each other convergent boundary
a plate boundary where oceanic crust is being pushed down into the mantle beneath a second plate subduction zone
hypothesis that the continents were once joined to form a supercontinent which broke into pieces and the continents drifted to their present day positions continental drift
a boundary in which two plates slide past one another without creating or destroying lithosophere transform fault boundary
the rigid, outer layer of Earth that is composed of the crust and upper part of the mantle lithosphere
the theory that Earth’s crust and upper mantle (lithosphere) are broken into sections (plates) that slowly move and interact with each other at their boundaries plate tectonics
the process by which plate tectonics produces new oceanic lithosphere at ocean ridges seafloor spreading
the process in which warm, less dense material rises from the mantle to the lithosphere, moves horizontally, cools and sinks back to the mantle convection current
the weak plasticlike layer of the mantle that is below the lithosphere asthenosphere
a deep faulted structure found along a divergent plate boundary on the seafloor or on land rift valley
a surface feature on the seafloor produced by the descending plate during subduction trench
Created by: sflora
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