EARTH 205 Study Guide - Midterm Guide: Precambrian, Tacoma, Washington, Ordovician
21 Mar 2017
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Earth 205 1st test study guide (cid:498)(ow the earth works(cid:499) (cid:523)the dynamic planet, focus on the solid earth(cid:524) (cid:498)the earth system(cid:499) = air, water, land and life. For example, the grand canyon, you don"t see it changing when you"re standing. Layers of the earth= crust, mantle, liquid outer core, solid inner core. Dynamic: means yes changes as a function of time. Static: means no changes as a function of time there. Slow and steady over millions of years can make the grand. At the plate boundaries, and there are three types of plate boundary motion: divergent: mid ocean spreading centers, transform faults, convergent: subduction zones. There are three tectonic plates that interact along the west coast of north america: north american, pacific (largest plate) ** earth"s radius is (cid:888)(cid:885)(cid:889)(cid:883) kilometers** average depth of the worlds oceans: 4 km= 4,000m. Subduction zone: plate on one side is oceanic crust, (thinner) colliding with continental crust (thicker) so oceanic crust falls underneath.
