Cold Environments - Definitions 0.0 / 5 ? GeographyCold EnvironmentsASAQA Created by: Chloemay1998Created on: 03-03-16 10:55 Accumulation The input of snow and ice into ther glacial system (mainly snow) 1 of 22 Ablation The output of water from a glacier 2 of 22 Glacial Budget The balance between accumulation and ablation over a year 3 of 22 Equilibrium Point The place where accumulation and ablation are equal 4 of 22 Supraglacial material Material carried on top of the glacier 5 of 22 Englacial Material carried inside the body of the glacier 6 of 22 Subglacial Material moved along the base of the glacier 7 of 22 Till/boulder clay The unsorted mixture of material deposited by the glacier 8 of 22 Lodgement till Material spread onto the valley floor beneath the ice, by a moving glacier 9 of 22 Ablation till Material dropped as a glacier melts. Close to the snout (where most ablation occurs) 10 of 22 Arete Steep-sided ridge 11 of 22 Pyramidal peak Pointed mountain peak with at least 3 sides 12 of 22 Glacial trough (U-shaped valley) Steep-sided valleys with flat bottoms 13 of 22 Hanging valleys Waterfalls into the main glacier from tributary glaciers 14 of 22 Truncated spurs Ridges of land that have been cut off 15 of 22 Valley steps Steps within the glacial trough 16 of 22 Tarns Lakes that form in corries after the glacier has retreated 17 of 22 Ribbon lakes Long, thin lakes that form in the valley once the glacier has retreated 18 of 22 Fjords Long, deep inlets 19 of 22 Roche moutonnee Resistant (hard) mass of rock on the valley floor 20 of 22 Frost contraction When cracks form in the permafrost due to low temperatures causing the ground to contract. 21 of 22 Talik Unfrozen ground 22 of 22
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