Question 1

Processes that are related expressly to streams and rivers are termed

Accepted Answer

A)  fluvial.
B)  geomorphic.
C)  lentic.
D)  lotic.
E)  riverine.

Question 2

Which of the following lists of processes are in the correct sequence as to their occurrence in nature?

Accepted Answer

A)  deposition,erosion,transport,weathering
B)  weathering,erosion,deposition,transport
C)  weathering,deposition,erosion,transport
D)  weathering,erosion,transport,deposition
E)  transport,deposition,erosion,weathering

Question 3

Drainage basins are

Accepted Answer

A)  open systems.
B)  closed systems.
C)  equilibrium systems.
D)  open systems in terms of energy,closed systems in terms of matter.
E)  closed systems in terms of energy,open systems in terms of matter.

Question 4

Discuss the concept of the graded stream.Do most streams approximate a graded stream? Why or why not?

Accepted Answer

A graded stream is one in which the chan...

Question 5

A maze of interconnected channels formed on a river with a high sediment load is known as a(n) ____stream.

Accepted Answer

A)  braided
B)  anabranching
C)  meandering
D)  straight
E)  exotic

Question 6

Define the following terms: drainage basis,drainage divide,interfluve,and valley.

Accepted Answer

drainage basin (watershed): an area of l...

Question 7

The drop in stream elevation per unit distance is known as

Accepted Answer

A)  discharge.
B)  base level.
C)  gradient.
D)  aspect.
E)  slope.

Question 8

Entrenchment of a channel occurs because

Accepted Answer

A)  a decrease in stream gradient occurs.
B)  a change in the bed load size-distribution occurs.
C)  the river flows from consolidated rock into a region composed of loose sediments.
D)  rejuvenation occurs due to uplift.
E)  isostatic downwarping of the crust occurs.

Question 9

Describe the stages of development of an oxbow lake,from meander bend to cut off to oxbow lake,including the location of cut banks and point bars.

Accepted Answer

Figure GIA 14.2B nicely illustrates the ...

Question 10

Which of the following is not an example of humans impacting river systems?

Accepted Answer

A)  dams altering river flow and sediment loads
B)  urbanization altering run-off
C)  deforestation altering sediment loads in streams
D)  levee constructions affecting floodplain ecosystems
E)  rivers and streams provide recreation to humans

Question 11

Excess sediment may result in which of the following channel patterns?

Accepted Answer

A)  V-shaped valleys
B)  braided stream
C)  meandering stream
D)  straight,steep-walled channels
E)  deeply entrenched U-shaped valleys

Question 12

Faulted and jointed landscapes direct stream courses in patterns of right-angle turns forming this drainage pattern.

Accepted Answer

A)  radial
B)  rectangular
C)  trellis
D)  dendritic
E)  deranged

Question 13

Watersheds are defined by

Accepted Answer

A)  continental divides.
B)  drainage divides.
C)  stream orders.
D)  fluvial units.
E)  stream size and density.

Question 14

Maximum velocity in a straight channel is found

Accepted Answer

A)  near the bottom.
B)  near the inside of a meander.
C)  at the center and near the surface,corresponding with the deepest parts of the stream channel.
D)  at the center and near the surface,corresponding with the shallowest parts of the stream channel.
E)  near either of the river banks.

Question 15

Channels running through a delta divide into smaller courses that do not reconnect to the main channel.These are known as

Accepted Answer

A)  estuaries.
B)  alluvial terraces.
C)  yazoos.
D)  alluvium.
E)  distributaries.

Question 16

Which of the following will favor stream terrace formation?

Accepted Answer

A)  a large increase in sediment load
B)  tectonic uplift of the headwaters
C)  a rise in sea level
D)  a decrease in rainfall
E)  a decrease in flood frequency

Question 17

Rectangular drainage patterns form primarily as a result of

Accepted Answer

A)  differential resistance to erosion.
B)  topographic uplift.
C)  flow through anticlinal and synclinal topography.
D)  flow through a faulted and jointed landscape.
E)  hard,resistant rock that prevents erosion.

Question 18

Bed load is moved by

Accepted Answer

A)  saltation only.
B)  traction only.
C)  suspension only.
D)  saltation,traction,and suspension.
E)  both saltation and traction,but not suspension.

Question 19

A(n) _____is a stream which maintains an equilibrium between the processes of erosion and deposition and,therefore degradation and aggradation.

Accepted Answer

A)  graded stream
B)  oxbow
C)  anabranching river
D)  meandering stream
E)  rill

Question 20

A(n) _____stream is one in which the channel slope has adjusted so that stream velocity is just enough to transport the sediment load.

Accepted Answer

A)  graded
B)  ungraded
C)  equilibrium
D)  disequilibrium
E)  channel

Exam 14: River Systems

Bed load is moved by

Correct AnswerverifiedShow Answer

Channels running through a delta divide into smaller courses that do not reconnect to the main channel.These are known as

Correct AnswerverifiedShow Answer

A(n) _____stream is one in which the channel slope has adjusted so that stream velocity is just enough to transport the sediment load.

Correct AnswerverifiedShow Answer

Which of the following is not an example of humans impacting river systems?

Correct AnswerverifiedShow Answer

Entrenchment of a channel occurs because

Correct AnswerverifiedShow Answer

A(n) _____is a stream which maintains an equilibrium between the processes of erosion and deposition and,therefore degradation and aggradation.

Correct AnswerverifiedShow Answer

Define the following terms: drainage basis,drainage divide,interfluve,and valley.

Correct Answerverifieddrainage basin (watershed): an area of l...View AnswerShow Answer

Processes that are related expressly to streams and rivers are termed

Correct AnswerverifiedShow Answer

Which of the following will favor stream terrace formation?

Correct AnswerverifiedShow Answer

Which of the following lists of processes are in the correct sequence as to their occurrence in nature?

Correct AnswerverifiedShow Answer

Describe the stages of development of an oxbow lake,from meander bend to cut off to oxbow lake,including the location of cut banks and point bars.

Correct AnswerverifiedFigure GIA 14.2B nicely illustrates the ...View AnswerShow Answer

Faulted and jointed landscapes direct stream courses in patterns of right-angle turns forming this drainage pattern.

Correct AnswerverifiedShow Answer

The drop in stream elevation per unit distance is known as

Correct AnswerverifiedShow Answer

Drainage basins are

Correct AnswerverifiedShow Answer

Excess sediment may result in which of the following channel patterns?

Correct AnswerverifiedShow Answer

Discuss the concept of the graded stream.Do most streams approximate a graded stream? Why or why not?

Correct AnswerverifiedA graded stream is one in which the chan...View AnswerShow Answer

Maximum velocity in a straight channel is found

Correct AnswerverifiedShow Answer

Watersheds are defined by

Correct AnswerverifiedShow Answer

A maze of interconnected channels formed on a river with a high sediment load is known as a(n) ____stream.

Correct AnswerverifiedShow Answer

Rectangular drainage patterns form primarily as a result of

Correct AnswerverifiedShow Answer

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drainage basin (watershed): an area of l...
View Answer

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Correct Answer
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Correct Answer
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Figure GIA 14.2B nicely illustrates the ...
View Answer

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Correct Answer
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Correct Answer
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Correct Answer
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A graded stream is one in which the chan...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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