Edexcel Physical Geography Key words Test Questions And Complete Solutions 2024.
Accretion Wedge - Answer The accumulation of material at the point of subduction. Aseismic Buildings - Answer Buildings designed to withstand or minimise destruction during an earthquake. Asthenosphere - Answer The upper mantle layer of the Earth. It is semi-molten and approximately 2000km wide. Ash - Answer Fine particles and dust ejected during an eruption, which can remain airborne as clouds or accumulate on the ground. Continental Crust - Answer Crust that forms the continents of the lithosphere, on average 35km thick. Continental Drift - Answer The movement of tectonic plates, due to varying weights of crust. It was originally thought that convection currents caused the movement of the plates, but now Slab Pull is thought of as the primary driving force. Convection Currents - Answer The circulation of magma within the mantle (asthenosphere). Magma is heated by radioactive processes in the core and cools at the surface, and so circulates between the two places. Degg's Model - Answer This model shows that a hazard becomes a disaster if it affects a vulnerable population. Epicentre - Answer The point on the surface, directly above the earthquake's origin. Focus - Answer The place in the crust where
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