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WOW Words

Group 3 2nd 9 Weeks

TermDefinition
plate tectonics describes the movement of Earth's plates
convection the transfer of heat energy by movement of a fluid
convergent boundary a plate boundary where two plates move toward each other
divergent boundary a plate boundary where two plates move away from each other
fault a fracture along which rocks move
lithosphere a rigid layer made up of the uppermost part of the mantle and the crust
mid ocean ridge an undersea mountain range where new ocean floor is produced
plate boundary a place where Earth's plates meet
subduction the process by which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a convergent boundary
transform boundary a plate boundary where two plates move past each other in opposite directions (slide)
trench a deep, stee sided canyon in the ocean floor
asthenosphere the soft layer of the mantle on which the lithosphere floats
igneous rock formed from cooled magma
metamorphic rock formed from heat and pressure
sedimentary rock layers of rock become cemented together
sediment small solid pieces of material that comes from rocks or other organisms; earth material deposited by erosion
fossil a trace organism that has been preserved in a rock
convection the transfer of heat energy by the movement of a fluid
density the amount of mass of a substance in a given volume
seafloor spreading the process by which molten material adds new oceanic crust to the ocean floor
Pangaea the name of the single landmass that broke apart 200 million years ago and gave rise to today's continents
soil loose weathered material on Earth's surface in which plants can grow
weathering the chemical and physical processes that break down rock at Earth's surface
erosion the movement of weathered or soil by water, ice, wind, or gravity
deposition process in which sediment is laid down in a new location
Created by: sfelder
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