37.- Use the diagram below to answer the following questions: Silt Pebbles Cobbl

Question

37.- Use the diagram below to answer the following questions: Silt Pebbles Cobbles 1000Clay 100 10 mud for flow depth of 1 metre The positlons of the curves very for different 0001 001 10 100 1000 Grain size (mml 37a.- A flow velocity of 10cm/s is adequate to erode and transport cobble size grains. (True or Fal 37b.- Sand size grains and larger particles required flow velocities exceeding 20 cm/s to be entrained True or False 37c- Would a silt grain fall from suspension (deposition) at a flow velocity of .1cm/s? (yes or no)

Explanation / Answer

37.a) A flow velocity of 10cm/s is adequate to erode and transport cobble size grains. False

37.b) Sand size grains and larger particles required flow velocity exceeding 20cm/s to be entrained. true

37.c) would a silt grain fall from suspension (deposition) at a flow velocity 0.1cm/s ? yes.

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