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5 Written questions

5 Matching questions

  1. Thalweg
  2. chemical weathering - carbonation
  3. ground ice
  4. glacier deposits
  5. loess
  1. a deepest and fastest part of flow
  2. b frozen subsurface water - pore ice (soil pores), lenses and veins (channels of ice), segregated ice (layers), intrusive ice (water injected under pressure) and wedged ice (cracks)
  3. c accumulation of wind-blown fine sediment from cold regions with no vegetation. can be derived from galcial outwash deposits or glacial erosion
  4. d loose or fragmented rock - any size, eroded from underlying bedrock or deposited by previous glacial advances. Meltwater stream carries fine grained material
  5. e solution in carbonic acid, formation of carbonic acid - water, vapour + carbon dioxide

5 Multiple choice questions

  1. erosion from overland flow over smooth surface - depends on slope angle and water depth - effective in transporting eroded material + no evidence of canalized flow
  2. 85%
  3. Solution (dissolved) - suspended load - bed load
  4. low oval hill made of deposited till, molded by overriding glacier, upstream side is steep, downstream side is tapered - long axis parallel to direction of ice flow
  5. amount of sediment eroded from the basin. Assumes sediment is completely eroded from the basin. Estimated as total volume of sediment divided by total basin area. Equal lowering over entire basin area.

5 True/False questions

  1. Dischargesemi-circular shaped created as glacier sources back toward mountain - at the head, depends on level of activity of glacier, duration of glaciation and composition and structure of bedrock


  2. erosiongrinding of bedrock surfaces using rock carried by ice - polished and scratched rock surface caused by moving sheet


  3. periglacialprocesses, landforms, topography and climate of cold regions, along margins of past and present glaciers. freeze-thaw processes common features: permafrost, pattern ground and ground ice


  4. biological weatheringdecomposition - mineral alteration or decomposition, involves chemical reaction and change in chemical composition of minerals - new minerals are created (secondary minerals like clay) - organic acids produced by plants enhance chemical weathering


  5. poolamount of sediment transported at a given discharge


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