Geography A Level Coastlines Edexcel Study Guide Exam And Correct Answers 2024
Littoral Zone - Answer Area between the highest sea level (storm waves, spring tides) and shallow coastal waters (where the base of the wave first encounters friction with the sea bed). Dynamic Equilibrium - Answer Where the inputs and outputs are balanced as changes are counteracted. Littoral/ Sediment Cells - Answer When coastline is divided into natural compartments that contains a complete cycle of sedimentation. Emergent Coast - Answer Where the coast is rising relative to sea level e.g due to tectonic uplift or isostatic rebound. Isostatic Rebound - Answer Change in land level which can be up or down. During an ice age, the weight of ice pushes the crust down into the soft upper mantle where it is thickest. At the same time, where ice is thin, the land is tilted up. After an ice age, the crust that was pushed down rebounds slowly while at the same time causing other areas to sink. Submergent Coast - Answer Where the coast is sinking relative to sea level e.g due to rising sea level or subsiding land. Clastic - Answer Sedimentary type rocks e.g sandstone Crystalline - Answer Igneous and Metamorphic rocks made of interlocking crystals which are more erosion resistant.
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