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Mod-F 1.3
Earth's Plates
Term | Definition |
---|---|
Lithospheric Plate | one of the pieces of Earth's rocky crust that rests and moves on the semi-liquid mantle |
Convergent Boundary | formed where two sections of Earth's crust are colliding |
Divergent Boundary | forms where lithospheric plates are moving away from each other |
Transform Boundary | boundary between two lithospheric plates where the plates are sliding past each other |
Plate Tectonics | theory that describes and explains the way that continents separated into today's land masses from one large land mass (Pangea). |
Fossil | remains, impression, track, or other evidence of ancient organisms |
Mantle | a layer of Earth's surface, lying just below the crust and above the inner core |
Convection Current | Uneven heating causes material in the mantle to constantly ans slowly rise and fall |
Continental Crust | less dense rocky material that makes up continents |
Oceanic Crust | more dense portion of Earth's crust that lies beneath the oceans |
Mid-Ocean Ridge | undersea mountain range that forms where two parts of Earth's crust are pushing apart (diverging plate boundary) |
Subduction | the process in which one lithospheric plate slides under another; occurs at converging plate boundaries |
Faults | crack within Earth's rocky crust, where rock has been fractured, and where rocks move past each other |
Earthquake | energy travelling as waves passing through Earth, caused by sudden shift along a fault line, or by volcanic activity |
Uplift | The lifting of land by forces in Earth's crust |
Volcano | hill or mountain formed by material that erupts onto Earth's surface; caused by action of magma below the surface |