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5 Written questions

5 Matching questions

  1. bar
  2. glacier trough
  3. cryotic ground
  4. deposition at river mouths
  5. Flows
  1. a viscous flows occur when soil/debris/clay are liquified. 3 types: mudflow, earth flow, debris flow
  2. b frozen ground
  3. c small island that form when there is a high load of sediment
  4. d occur when a river reaches base level, flat surface or standing water. Alluvial fans or Deltas. Due to reduced velocity. Many tributaries appear.
  5. e eroded by passage of valley glacier - longitudinal profile is steep, irregular and stepped - u-shaped and typically straight

5 Multiple choice questions

  1. straight, meandering, braided
  2. volume 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.
  3. below a lake, inside frozen layer
  4. material in middle of glacier (when two lateral morraines come together)
  5. removal of weathered material from one place to another - transport

5 True/False questions

  1. snowlineelevation above which snow persists year round, lower limit of perennial snow


  2. Erosion in Bedrock channels?Chemical weathering, abrasion, hydraulic action


  3. physical weathering - unloading1. deeply buried rocks are under high pressure, 2. erosion removes overburden - decreases pressure - physical heaving of rock 3. layers of rock peel off into widely spaced sheets - sheeting structures and exfoliation domes, granular/disintegration (grains loosen and fall out)


  4. Major playersultimate sea level, in local areas it may be a dam. the theoretical limit for stream erosion


  5. Controlling factors of sediment yieldbedload + suspended load