Unit+5+-+Plate+Tectonics

=Videos, Tutorials and Websites= [|Plate Boundaries Animation] [|Plates and Boundaries] [|Plate Tectonics - Boundaries and Motion] [|Plate Tectonics] [|Boundaries Explanations] [|Plate Tectonics - Interactive Map]

media type="custom" key="12193550" [|Continental Drift Animation] [|Video Lesson on Plate Tectonics - Click On the Picture Below]

1) Begins with close-up showing mid-ocean ridge topography with magma chamber below, 2) magma rises and new ocean plate spreads away from ridge.

== =[|Observe animations] of processes that occur along plate boundaries. =

=[|Observe an Animation] Showing Growth of a Continent= Continents can grow by accumulating crustal material along their edges at convergent boundaries. Here, a terrane carried by a subducting plate is fused to the edge of a continent. The attachment of terranes such as this contributed to continental growth along the west coast of North America. = = = =

=[|Observe an Animation] of Volcanoes at a Subduction Zone= As an oceanic plate descends to hotter depths beneath the overriding plate, it is heated and releases water. The presence of hot, water-rich liquids causes the overlying rock to begin melting. The resulting magma is less dense than the surrounding rock, so it rises up toward the surface where it collects in magma chambers. Volcanic eruptions happen when magma from these chambers reaches the surface. Over millions of years, repeated eruptions build volcanic mountains on the overriding plate.

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=[|Observe an Animation] of Volcanoes Along a Rift Zone= Rift zones are divergent plate boundaries. Most of them occur along the seafloor as mid-ocean ridges. Where two plates are moving away from each other, molten rock rises to the surface, cools, and solidifies. Generally, each eruption of lava splits the rocks formed in the previous eruption, so the youngest rocks are always at the rift.

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=Games and Practice= [|Plate Tectonics Matching] [|Rags to Riches] [|Plate Tectonics Practice Quiz] [|Game - Place the Boundaries] [|Plate Tectonics Game Show]

=Things From Class= [|Plate Tectonics Vocabulary] media type="custom" key="12231248"