19) The difference between stream capacity and competence is: A. Capacity is the
ID: 803518 • Letter: 1
Question
19) The difference between stream capacity and competence is:
A. Capacity is the minimum and competence is the maximum sediment load
B. Capacity is the maximum sediment load
C. Competence is the maximum sediment load
D. Capacity is the maximum size fraction transported by a stream
E. None of the above
20) When stream flow velocity decreases:
A. Capacity increases
B. Competence increases
C. Nothing happens
D. Competence decreases
E. A & D
21) The character of a stream changes with flow distance. Which of the following is true about the headwaters of a stream?
A. The topographic gradient is low
B. Sediments is fined grained
C. Rivers are curved
D. Sediment is course
E. None of the above
22) The lowest point to which a stream can erode is called?
A. Base jumping
B. Base level
C. A waterfall
D. Rapids
E. None of the above
23) Valleys and canyons are the result of streams down-cutting through a landscape. What factors control the morphology (i.e., valley versus canyon) of the landscape?
A. Rate of downcutting
B. Infiltration
C. Strength of bedrock
D. Area of drainage basin
E. A & C
24) As rivers approach base level and the gradient decreases, the stream channel migrates laterally across the floodplain. These streams are called?
A. Braided
B. Outwash
C. Wandering
D. Meandering
E. None of the above
PLEASE ANSWER ALL! Pretty please!
Explanation / Answer
19) Competence is the maximum sediment load
competence is the maximum particle size it can carry and capacity is the total quantity of sediment it can carry
20) Aand D
both the competence and capacity decreases as the river velocity decreases
21) Sediment is coarse
headwaters are the places where a river originates, the stream gradient decreses from headwaters to mouth of a river
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