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tectonic/hazards
topic 1 edexcel geography
Question | Answer |
---|---|
conservative plate boundary | opposite ways |
divergent plate boundery | away |
convergent | together |
subduction zone | plate underneath |
continental crust | old, can't be created or destroyed, granite. |
oceanic crust | new and more dense, than continental, basalt. |
core levels | inner core outer core mesosphere asthenosphere lithosphere |
destructive plate boundary | two plates moving together, volcanos and mountains- eg. Himalayas has active and infrequent, explosive volcanos |
divergent plate boundaries | rift volcanos, less explosive, mid Atlantic ridge, basaltic magma. |
middle of plate features | hotspots- hawaii |
theories | slab pull- convections paleomagnatism- north facing, geo timelines benioff zone- subduction zone |
locked fault example | 2004 indian ocean boxing day tsunami |
epicenter | the point at the surface of the earth that is directly above the hypocenter |
hypocenter | the point within the earth where earthquakes rapture starts |
seismic waves | waves that transmit energy released by an earthquake |
p waves | vibrations that are caused by compression |
s waves | slowly- vibrate at right angles, can't travel through liquids |
L waves | surface waves, high amplitude, horizontal plane |
soil liquéfaction | solids behaving like liquids |
secondary hazard examples | soil liquéfaction landslides avalanches tsunamis |
measuring deserters examples | degg model hazard, deserter, venerability risk perception model pressure release model- parr |
hazard risk formula | hazard x exposure vunrabillity manafibillity |
richer scale | earthquake- amplitude |
mercalli scale | earthquake- human impact |
moment magnatude scale | earthquake- seismic movement |
VEI | volcanic- volume of ejecta |
disaster hotspots | a country or area that is disaster prone |
risk reduction factors | preparedness responce recovery mitigation developtment climate change adaption |
disaster response curve | pre deserter relief rehab reconstruction |