physical snapcards 2 0.0 / 5 ? GeographyCase studiesA2/A-levelAQA Created by: Gabi ChaseCreated on: 13-04-14 15:27 how long is the san-andreas fault? 1300km but mostly cuts through California 1 of 26 what does it mark the boundary between? pacific plate and north american plate 2 of 26 example of earthqauke great san-francisco earthquake 1906 3 of 26 what are guyots? flat-topped sea mounts 4 of 26 basaltic lava originate largely from the upward movement of mantle material. common along spreading ridges also at hotspots 5 of 26 andesitic lavas typical of destructive margins where crust is destroyed 6 of 26 rhyolitic lavas most often at destructive or collision margins 7 of 26 how far does the hawaiin hot spot stretch? 1500km 8 of 26 what direction is the pacific plate moving in? north-west at a rate of 5-10cm a year 9 of 26 what is the next volcano in the chain? Lo'ihi seamount, south of Hawaii 10 of 26 what direction are the extinct volcanoes? north west of hawaii 11 of 26 where is the plate being pulled today? towards the Aleutian island arc , where it will be subducted 12 of 26 ropey lava panhoehoe 13 of 26 blocky lava aa 14 of 26 what is the largest volcanoe on earth? mauna loa, volume of 18000 cubic miles 15 of 26 world most active? kiluaua 16 of 26 fissure volcano heimaey, iceland 17 of 26 shield mauna loa, hawaii 18 of 26 composite mt etna, italy 19 of 26 acid dome puy de dome, france 20 of 26 ash/cinder cone paricutin , mexico 21 of 26 caldera crater lake, US 22 of 26 what is composite made from? many layers of hardened lava, tephra, pumice and volcanic ash 23 of 26 what are ash/cinder formed from? by pyroclastic rock fragments, or cinders, which accumulate and gradually build a conical hill with a bowl-shaped crater at the top 24 of 26 how much is the cone usualyl inclined? 30 degrees and maybe only a few tens of feet high 25 of 26 acid dome volcanoes steep convex sides due to cooling of viscous lava, rhyolitic lava emmited cant travel far 26 of 26
'impacts from earth hazards owe more to physical factors than human factors' How far do you agree?: essay plan 0.0 / 5
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