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5 Written questions

5 Matching questions

  1. alluvial terraces
  2. loess
  3. tarn
  4. drumlin
  5. Morraines
  1. a bench-like landforms that are carved in alluvium by a stream during degradation
  2. b glacially deposited sediment piles
  3. c 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
  4. d small lake that occupies a rock basin in a cirque or glacier through
  5. e accumulation of wind-blown fine sediment from cold regions with no vegetation. can be derived from galcial outwash deposits or glacial erosion

5 Multiple choice questions

  1. all debris deposited by glacier.
  2. frozen ground
  3. a mass of ice that forms on land due to a multilayer surplus of snowfall over snowmelt. Effective agents of erosion and deposition.
  4. steep-sided, shard edged bedrock ridge formed by two glacials eroding on oposite sies of a ridge
  5. long, straight scratches (evidence of glacier) - rates of up to 5 mm/yr. influenced by amount of debris, basal sliding velocity, ice thickness (pressure), hardness of bedrock, basal water pressure and removal of rock material

5 True/False questions

  1. 3 types of erosionSolution (dissolved) - suspended load - bed load

          

  2. ice fieldsnot enough ice for dome, flow is constrained by topography

          

  3. physical weathering - thermal expansionvolume change due to change in temperature. Heating - expansion. Cooling - contraction. rocks and minerals expand in response to daily heating and cooling, seasonal heating and cooling and wildfires. For effectiveness requires frequent and extreme fluctuations.

          

  4. How does sediment enter rivers?- slope erosion (sheet, rill, gully) - mass movement (landslide, etc) - recruitment of sediment from bed and bands

          

  5. Suspended loadsuspended because of turbulent eddies, very fine (silt, clay) - 90% of sediment load - from slopes, banks and channel bed - depends on discharge and sediment availability

          

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