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Unformatted text preview: -7-10 KM thick-35-40 KM thick-denser than continental crust-Structure of Earths interior- crust, mantle, lithosphere, asthenosphere, moho, core.-How seismic waves work and how they determine Earths internal structure- -Earths magnetic field-PLATE TECTONICS-Alfred Wegners evidence for continental drift and pangea--How magnetic anomalies and magnetic field reversals preserved on the sea floor support theory of sea floor spreading--Hot spots-a location at the base of the lithosphere, at the top of a mantle plume, where temperatures can cause melting Mantle plumes- a column of very hot rock rising up through the mantle-Seamounts- an isolated submarine mountain-Triple junctions- a point where three lithosphere plate boundaries intersect-Craton- a long-lived block of durable continent crust commonly found in the stable interior of a continent-Orogen- a linear range of mountains-Orogeny- a mountain-building event...
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- Spring '08