A Level Edexcel Geography Tectonic Hazards and Processes Practice Exam With Solved Solutions 2024.
Mantle - Answer A layer of rock that due to high temperatures is deformable (plastic) and flows very slowly Mantle Plumes - Answer Concentrated areas of heat convection. At plate boundaries they are sheet like, whereas at hotspots they are columns Subduction - Answer Process of one plate sinking beneath another at a convergent (destructive) plate boundary Focus - Answer Exact point where an earthquake origionates Epicentre - Answer Point on the earth's surface directly above the focus Global Distribution of Tectonic Hazards - Answer Mostly around plate boundaries. I.e. Japan. True for both volcanoes and EQs. Factors Affecting Boundary Type - Answer 1. Motion, whether plates are moving apart (divergent/constructive), colliding (convergent/destructive) or sliding past each other (conservative/transform 2. Plate Type, whether they are Oceanic or Continental Oceanic Crust - Answer Make up the ocean floor, high density basaltic rock. 7-10 km thick. Continental Crust - Answer Make up the earth's landmasses and are 25-70km thick. Less dense granite rock.
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