Question 1

The nature of fluid flow (turbulent versus laminar) is independent of

Accepted Answer

A)  fluid velocity.
B)  fluid viscosity.
C)  channel dimensions.
D)  load.E) B) and C)
F) A) and B)

Question 2

What information do geologists use to estimate speeds of ancient rivers?

Accepted Answer

A)  sediment type
B)  grain size
C)  channel dimensions
D)  chemistry of the sedimentsE) C) and D)
F) A) and B)

Question 3

Because of human activity,sediment transported by streams has

Accepted Answer

A)  decreased dramatically.
B)  remained constant.
C)  increased dramatically.
D)  decreased by a minor amount.E) B) and C)
F) All of the above

Question 4

In an alluvial fan,the coarsest material would be deposited

Accepted Answer

A)  on the steep,upper slopes of the fan.
B)  on the gentle,lower slopes of the fan.
C)  approximately halfway between the steep slopes of the mountains and the gentle slopes of the plains.
D)  where two fans interfere or overlap each other.E) All of the above
F) B) and C)

Question 5

In which of the following locations would one most likely find a braided stream?

Accepted Answer

A)  at the edge of a melting glacier
B)  on a gently sloping plain of fine-grained sediment
C)  in a narrow gorge cut into bedrock
D)  in/on all of the aboveE) B) and C)
F) A) and C)

Question 6

Why is the Mississippi delta so large?

Accepted Answer

A)  because the Mississippi River transports a huge amount of sediment
B)  because tides in the Gulf of Mexico are not very strong
C)  because waves in the Gulf of Mexico are not very strong
D)  all of the aboveE) All of the above
F) A) and D)

Question 7

Where do rapids form in a river?

Accepted Answer

A)  where the flow is slow
B)  where the flow moderate
C)  where the flow is fast
D)  where the flow is very fastE) None of the above
F) All of the above

Question 8

What is the correct sequence of sedimentary layers in a delta (top to bottom) ?

Accepted Answer

A)  topset,middleset,bottomset
B)  highset,middleset,lowset
C)  topset,bar sand,foreset,bottomset
D)  topset,foreset,bar sand,bottomsetE) A) and D)
F) All of the above

Question 9

A stream that existed before the present day topography was created is a(n) ______ stream.

Accepted Answer

A)  superposed
B)  dendritic
C)  antecedent
D)  preformationalE) All of the above
F) A) and B)

Question 10

Oxbow lakes are associated with which of the following types of rivers?

Accepted Answer

A)  braided rivers
B)  dendritic rivers
C)  meandering rivers
D)  straight riversE) B) and C)
F) A) and C)

Question 11

Which of the following lakes is the world's largest and deepest?

Accepted Answer

A)  Great Salt Lake,North America
B)  Lake Superior,North America
C)  Lake Baikal,Asia
D)  Lake Victoria,AfricaE) B) and C)
F) B) and D)

Question 12

Which of the following depositional settings consists primarily of fine-grained silt and mud?

Accepted Answer

A)  stream channels
B)  floodplains
C)  natural levees
D)  point barsE) B) and D)
F) None of the above

Question 13

All else being equal,high viscosity fluids should flow ______ with _____ streamlines in comparison with low viscosity fluids.

Accepted Answer

A)  slower; straight
B)  slower; crossing
C)  faster; straight
D)  faster; crossingE) None of the above
F) A) and C)

Question 14

At a bend in a river,______ occurs on the outside of the bend and ______ occurs on the inside of the bend.

Accepted Answer

A)  deposition; deposition
B)  erosion; deposition
C)  deposition; erosion
D)  erosion; erosionE) C) and D)
F) B) and C)

Question 15

A drainage divide is

Accepted Answer

A)  a fork in the river.
B)  a topographic high that separates stream systems.
C)  a ridge between gullies.
D)  a piece of land between tributaries.E) A) and B)
F) None of the above

Question 16

Which of the following particles is the most easily eroded from the bed of a stream?

Accepted Answer

A)  boulders
B)  cohesive clay
C)  pebbles
D)  sandE) A) and C)
F) B) and C)

Question 17

The ____________ dictate(s) a drainage pattern.

Accepted Answer

A)  lithology of the underlying bedrock units.
B)  geologic structures in the bedrock units.
C)  shape of the land surface.
D)  lithology of the underlying bedrock units,geologic structures in the bedrock units,and the shape of the land surface.E) All of the above
F) B) and C)

Question 18

If a dam is built,sediment will __________ on the upstream side of the dam and sediment will ___________ on the downstream side of the dam.

Accepted Answer

A)  accumulate; accumulate
B)  erode; accumulate
C)  accumulate; erode
D)  erode; erodeE) All of the above
F) C) and D)

Question 19

The process whereby streams break apart and erode rock is called

Accepted Answer

A)  abrasion.
B)  discharge.
C)  superposition.
D)  transport.E) C) and D)
F) B) and C)

Question 20

Which of the following statements regarding stream terraces is true?

Accepted Answer

A)  Terraces are composed of bedrock and form as a result of rapid subsidence.
B)  Terraces are composed of bedrock and form as a result of rapid uplift.
C)  Terraces are composed of floodplain deposits and form as a result of rapid subsidence.
D)  Terraces are composed of floodplain deposits and form as a result of rapid uplift.E) A) and D)
F) B) and C)

Exam 18: Stream Transport: From Mountains to Oceans

Why is the Mississippi delta so large?

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What is the correct sequence of sedimentary layers in a delta (top to bottom) ?

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The ____________ dictate(s) a drainage pattern.

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In which of the following locations would one most likely find a braided stream?

Correct AnswerverifiedShow Answer

A drainage divide is

Correct AnswerverifiedShow Answer

If a dam is built,sediment will __________ on the upstream side of the dam and sediment will ___________ on the downstream side of the dam.

Correct AnswerverifiedShow Answer

What information do geologists use to estimate speeds of ancient rivers?

Correct AnswerverifiedShow Answer

In an alluvial fan,the coarsest material would be deposited

Correct AnswerverifiedShow Answer

A stream that existed before the present day topography was created is a(n) ______ stream.

Correct AnswerverifiedShow Answer

Which of the following depositional settings consists primarily of fine-grained silt and mud?

Correct AnswerverifiedShow Answer

Which of the following statements regarding stream terraces is true?

Correct AnswerverifiedShow Answer

The process whereby streams break apart and erode rock is called

Correct AnswerverifiedShow Answer

Where do rapids form in a river?

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At a bend in a river,______ occurs on the outside of the bend and ______ occurs on the inside of the bend.

Correct AnswerverifiedShow Answer

Because of human activity,sediment transported by streams has

Correct AnswerverifiedShow Answer

The nature of fluid flow (turbulent versus laminar) is independent of

Correct AnswerverifiedShow Answer

Oxbow lakes are associated with which of the following types of rivers?

Correct AnswerverifiedShow Answer

Which of the following lakes is the world's largest and deepest?

Correct AnswerverifiedShow Answer

All else being equal,high viscosity fluids should flow ______ with _____ streamlines in comparison with low viscosity fluids.

Correct AnswerverifiedShow Answer

Which of the following particles is the most easily eroded from the bed of a stream?

Correct AnswerverifiedShow Answer

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If a dam is built,sediment will on the upstream side of the dam and sediment will _ on the downstream side of the dam.

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At a bend in a river, occurs on the outside of the bend and occurs on the inside of the bend.

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All else being equal,high viscosity fluids should flow __ with _ streamlines in comparison with low viscosity fluids.

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