Restless Earth 3.0 / 5 based on 2 ratings ? GeographyNatural hazardsGCSEEdexcel Created by: niamh123Created on: 30-12-14 12:54 Asthenosphere partly molten and partly solid rock- the top layer of the mantel 1 of 34 lithospere uppermost layer of the earth, it is cool and brittle. it includes the top layer of the mantle and the crust 2 of 34 collision zone where two tectonic plates meet 3 of 34 continental crust thick part of the earth's crust formed by large masses of land. Made of mostly granite a low density igneus rock, it is 30-50 km thick.900'C 4 of 34 convection currents the movement of heat rising and falling in the earth's mantel 5 of 34 convergence air accumulated in a 6 of 34 epicenter the earth quakes center 7 of 34 evacuate move people away from a disaster zone 8 of 34 fault crack in the earth's crust 9 of 34 focus a point where pressure is released 10 of 34 friction force which causes surfaces to stick together more 11 of 34 hot spot hot region deep in the earth that causes earth quakes 12 of 34 lava magma that has erupted from a volcano 13 of 34 lava flows streams of lava 14 of 34 magma a thick mixture of molten rock underground 15 of 34 magmmitude the measure of an earthquakes waves 16 of 34 mantle semi molten rock below the crust. convection currents move crust above. 17 of 34 oceanic crust dense crust below the ocean made of basalt. 6-8 km thick.900'C 18 of 34 pangea Name of the super continent that existed 200 million years ago 19 of 34 plate boundries the area where plates meet 20 of 34 plumes part of convection cell which brings magma to the surface 21 of 34 primary effects the immediate effect 22 of 34 secondary effects subsequent effects, often worse 23 of 34 seismometer measures direction, intensity and duration of earthquakes 24 of 34 stratovolcano cone shaped volcano with layered structure 25 of 34 subduction the oceanic plate is forced under the continental 26 of 34 tectonic plate the two sub layers of the earth's crust 27 of 34 basalt an igneus rock that makes up the oceanic crust 28 of 34 Lower mantle 1600-4000'C and solid made of pendotite 29 of 34 outercore 4000-5000'C liquid made of iron and nickle 30 of 34 innercore solid made of iron and nickle 31 of 34 constructive boundry two plates move apart, creating new plate as magma rises 32 of 34 conservative boundry two plates slide next to each other, going different ways creating earthquakes 33 of 34 destructive boundry oceanic and continental crusts move together, volcanoes and tsunamis 34 of 34
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