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Moving Plates

Mr. Smith's 6th grade Science

QuestionAnswer
Earth's solid surface crust
theory that the continents fit together like puzzle pieces, and once formed a supercontinent Pangaea
theory that explains that the continents split into pieces and drifted apart continential drift
a model that says new crustal material is forming at the ocean ridges caused by the old seaw floor being spread apart sea-floor spreading
describes Earth's crust as broken into pieces, or plates. This is the newer model that explains how the continents and sea floor have spread plate tectonics
layer below the crust mantle
when two plates collide and one slides under the other subduction
plates moving apart divergent boundary
plates moving towards each other convergent boundary
plates sliding past each other transform boundary
Created by: mtoutant
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