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g7 3.4

7th Grade STEMscopes CA Segment 3 Scope 4

QuestionAnswer
Convergent Boundary A place where two tectonic plates move toward each other and collide
Crust The thin, solid, outermost layer of Earth; is either continental (landmasses) or oceanic (ocean floors)
Divergent Boundary A place where two tectonic plates move away from each other
Magma Melted, or molten, rock material beneath Earth’s surface; cools slowly to form rocks with larger crystals
Mid-Ocean Ridge An underwater mountain system formed by plate tectonics; the largest single volcanic feature on Earth
Ocean Basin A depression of Earth’s surface in which an ocean lies
Seafloor Spreading A phenomenon by which magma from Earth’s mantle comes up at the mid-ocean ridge and creates new oceanic crust
Subduction The process in which a denser plate is pushed downward beneath a less dense plate when plates converge
Tectonic Plate Huge piece of crust that slowly moves on the upper, ductile part of the mantle
Trench Deep and narrow depression in the seafloor where the subducted plate moves into the asthenosphere
Competition When more than one individual or population in an ecosystem relies on the same limited resources
Dynamic Characterized by constant change, activity, or progress
Ecosystem A system comprising all the biotic and abiotic factors in an area and all the interactions among them
Ecosystem Dynamics Interrelated changes among the biotic and abiotic factors in an ecosystem over time
Population A group of interacting individuals of the same species located in the same area
Resilience The ability of an organism, population, community, or ecosystem to persist in the face of stressful or changing conditions
Created by: ncraft13
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