Glacial systems and landscapes 0.0 / 5 ? GeographyGlaciers as Natural SystemsA2/A-levelAQA Created by: RhodesNCreated on: 24-06-18 11:02 how are fluvioglacial landscapes formed? meltwater from glaciers and icesheets 1 of 23 how are periglacial landscapes formed? cold climates 2 of 23 what is the most obvious input into a glacial system? snow and (other forms of precipitation that adds to mass when they freeze) 3 of 23 what is the overall gain of mass called? accumulation 4 of 23 what does rock on its surface and embedded into galcier cause? erosion as the galcier moves along the valley floor and sides 5 of 23 what is an input in the form of energy into a glacial system? solar energy 6 of 23 what is Albedo? the amount of solar radiation refelcted back by the surface of the earth 7 of 23 ice and snow have a very high... albedo 8 of 23 what are a glaciers main outputs? melting, sublimation, and evaporation 9 of 23 when does sublimation (ice to water vapour without melting) occur? when its cold and atmospheric conditions are dry 10 of 23 what is ablation? reduction or loss 11 of 23 what is a cascading system? an output interacting with one system because input for another 12 of 23 what is a closed system? transfers energy but not matter, e.g. carbon cycle and hydrological cycle 13 of 23 what is an open system? transfers energy and matter, e.g. drainage basin 14 of 23 what is dynamic equilibrium? when outputs and inputs are balanced 15 of 23 what is feedback? when equilibrium is upset by a change in element 16 of 23 what is positive feedback? where effects of an action are amplified 17 of 23 what is negative feedback? effects of an ction are slowed down/reduced 18 of 23 what does temporal mean? change over time 19 of 23 what does spatial mean? change over space 20 of 23 what happens if a glacier is retreating? its moving back up the valley because of melting 21 of 23 what happens if a galcier is advancing? its moving down a valley 22 of 23 what is a galcial budget? balance of inputs and outputs 23 of 23
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