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GroupAssig3.pdf - Group Assignment #3: Earth’s Active...

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1Group Assignment #3:Earth’sActive SurfaceIntroductionThe extremely high temperatures of Earth’s core causes material in the surrounding mantleto become hot, expand, and rise toward the surface.The mantle material then cools andsinks, resulting in a circular motion of material moving beneath Earth’s surface.Thiscirculation of mantle mantel material causes the continental and oceanic plates to moveacross Earth’s surface.At various locations on Earth’ssurface, we are able to observedplates colliding, plates separating, and plates moving horizontally with respect to each other.ObjectivesThe purpose of this exercise is to1)Explain the theory of plate tectonics2)Describe the difference between rift and subduction zones3)Describe the relationship between fault zones and mountain buildingFigure 1.Oceanic to Continental Plate convergence zone.This image shows a cross section of Earth’s surface and itsunderlying mantle.At this particular location of the surface (D), the dense oceanic plate is forced beneath the less densecontinental crust.The dense oceanic plate experiences higher temperatures and pressures.This interaction between theoceanic plate and continental plate causes molten material to move upward through the continental plate until it breaks thesurface in the form of volcanoes.

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Term
Fall
Professor
HalJandorf
Tags
Plate Tectonics, oceanic plates

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