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5 Written questions

5 Matching questions

  1. Glacier ice formation?
  2. talus slopes
  3. esker
  4. snowline
  5. Base level
  1. a elevation above which snow persists year round, lower limit of perennial snow
  2. b poorly sorted, cone-shaped debris at base of steep slope
  3. c narrow ridge of coarse sand and gravel formed by subglacial meltwater channel (tunnel) sinuous but parallel to glacier flow, not always continuous
  4. d ultimate sea level, in local areas it may be a dam. the theoretical limit for stream erosion
  5. e from snow that doesn't melt in summer. snow plus water = more weight and pressure and snow transforms to ice. Why? pressure decreases air space, increases density and leads to consolidation and re-crystallization of snow into large crystals of snow ice (rough and granular)

5 Multiple choice questions

  1. bow or crescent shaped lake that forms when meandering erosion cuts off bends
  2. max. particle size that rivers can move - increases with velocity, depth and slope
  3. deepest and fastest part of flow
  4. occur when a river reaches base level, flat surface or standing water. Alluvial fans or Deltas. Due to reduced velocity. Many tributaries appear.
  5. 3 or more cirques adjacent to one another (the peak that survived glacier erosion all around)

5 True/False questions

  1. lodgement tilldeposited under the ice, dense and clay ric, compacted by overriding ice

          

  2. debris flowrapid downslope flow of water and soil (mostly clay)

          

  3. glacial drifteroded by passage of valley glacier - longitudinal profile is steep, irregular and stepped - u-shaped and typically straight

          

  4. karstlong-term solution weathering of limestone bedrock by surface and ground water

          

  5. abrasionphysical action of the sediment moving over the bedrock