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5 Written questions

5 Matching questions

  1. riffle
  2. chemical weathering - hydration
  3. tarn
  4. low risk vs. high risk
  5. tributary glaciers
  1. a low = unsaturated sediment dips upslope with no development. high = saturated igneous dips downslope with extensive development
  2. b ice carried from smaller, contributing glaciers
  3. c shallow rapid flow near downstream end of bar
  4. d combination with water, may cause expansion, mechanical weathering. hydration, dehydration cycles - granular disintegration
  5. e small lake that occupies a rock basin in a cirque or glacier through

5 Multiple choice questions

  1. formed because lower part of glacier moves slower than higher part but causes more deformation. differential velocities cause surface to crack
  2. change in mass of a glacier over time = total accumulation - total ablation . Either at a point, or total mass change of glacier or over an area.
  3. decay, disintegration, and dissolution of fresh rocks and minerals - no transport. Alters original lithological characteristics. Produces an unconsolidated material consisting of: new minerals, minerals that resisted destruction (stable minerals) and organic minerals added to weathered zone
  4. max. angel that loose material forming a slope can maintain without shipping. balance between driving forces and resisting forces. function of grain size and texture (solid rock could be 90, loose material and soil between 13 and 24 and coarse san 30-33) - a pile of sediment resting on the angle of response represents the threshold condition, any slight disturbance causes a failure
  5. low areas, or passes, through a ridge that once had claciers on either side

5 True/False questions

  1. regolith- layer of loose, heterogenous material covering solid rock (produced by 3 types of weathering)


  2. kettlesteep-sided hole formed by gradual melting of large ice block left behind by glacier with sediment accumulated "kettle lake" when it has water


  3. fiordsviscous flows occur when soil/debris/clay are liquified. 3 types: mudflow, earth flow, debris flow


  4. physical weathering - crystallizationsolution in carbonic acid, formation of carbonic acid - water, vapour + carbon dioxide


  5. lateral morrainat ice front (marks glacier's farthest advance)