2.3 Tectonic Landscapes 0.0 / 5 ? GeographyTectonic LandscapesGCSEEdexcel Created by: brendaleighsCreated on: 22-04-16 18:14 Crust 8-65km thick, the crust is the outer layer of the earth. made of solid rock, the crust is the layer upon which we live. 1 of 17 Mantle the widest section, approximately 2,900km thick. in the upper mantle, the semi-molten rock is hard, but lower down it begins to melt and becomes soft. 2 of 17 Outer Core made up of liquid iron and nickel, the outer core is the layer surrounding the inner core. 3 of 17 Inner Core the centre and hottest part of the earth. it is made up of solid iron and nickel, reaching temperatures of up to 5,500 degrees celsius. 4 of 17 Magma liquid rock below the earth's surface 5 of 17 Lava liquid rock above the earth's surface. 6 of 17 Tectonic Plates large slabs of rock which make up the earth's crust. 7 of 17 Richter measures the strength of an earthquake 8 of 17 Mercalli measures the strength of an earthquake 9 of 17 Oceanic a plate beneath an ocean. these are young, heavy and thin. 10 of 17 Continental a plate beneath a continent. these are old, thick and light. 11 of 17 Conservative (Transform) two plates sliding past each other. 12 of 17 Constructive (Divergent) two plates moving apart. 13 of 17 Destructive (Convergent) an oceanic plate forced beneath a continent plate - also known as subduction 14 of 17 Collision two plates moving towards each other. 15 of 17 Focus the point where the pressure is released (earthquakes). 16 of 17 Epicenter the point immediately above the focus. a earthquake is stronger near the epicenter. 17 of 17
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