Question 1

The ultimate base level is

Accepted Answer

A) a drainage divide. 
B) a dam. 
C) sea level. 
D) the base of the Rocky Mountains. 
E) a watershed. 
A) a drainage divide. 
B) a dam. 
C) sea level. 
D) the base of the Rocky Mountains. 
E) a watershed.

Question 2

Stream width,depth,and velocity can all change in response to changes in discharge rates.

Accepted Answer

A) True 
 B)False

Question 3

The Ganges River is an example of an arcuate delta,whereas the Mississippi River is a bird-foot delta.

Accepted Answer

A) True 
 B)False

Question 4

What happens to the flow velocity and erosive power of a stream during a high discharge event if levees have been created to confine flow to the channel? (Remember Q = wdv)

Accepted Answer

A) velocity increases because the width does not increase,and the erosive power increases. 
B) velocity increases because depth does not increase,and the erosive power increases. 
C) velocity decreases because the depth of the channel is significantly greater,and the erosive power increases. 
D) velocity decreases because the depth of the channel is significantly greater,and the erosive power decreases. 
E) there is no change to flow velocity and erosive power as the river is still the same water body. 
A) velocity increases because the width does not increase,and the erosive power increases. 
B) velocity increases because depth does not increase,and the erosive power increases. 
C) velocity decreases because the depth of the channel is significantly greater,and the erosive power increases. 
D) velocity decreases because the depth of the channel is significantly greater,and the erosive power decreases. 
E) there is no change to flow velocity and erosive power as the river is still the same water body.

Question 5

What factors account for the disappearance of the Nile River delta?

Accepted Answer

The disappearance of the Nile River delt

Question 6

An increase in turbulence

Accepted Answer

A) results in deposition of sediment. 
B) results in aggradation. 
C) causes terraces to form. 
D) increases the river's erosive power. 
E) decreases the size of the particles the stream is able to move. 
A) results in deposition of sediment. 
B) results in aggradation. 
C) causes terraces to form. 
D) increases the river's erosive power. 
E) decreases the size of the particles the stream is able to move.

Question 7

Of the world's largest rivers,which has the greatest discharge?

Accepted Answer

A) Zaire (Congo)River 
B) Amazon River 
C) Missouri-Ohio-Mississippi river system 
D) Chang Chiang (Yangtze)of Asia 
E) Nile 
A) Zaire (Congo)River 
B) Amazon River 
C) Missouri-Ohio-Mississippi river system 
D) Chang Chiang (Yangtze)of Asia 
E) Nile

Question 8

A central peak,such as a volcanic mountain,generally produces a ________ drainage pattern.

Accepted Answer

A) radial 
B) trellis 
C) parallel 
D) annular 
E) rectangular 
A) radial 
B) trellis 
C) parallel 
D) annular 
E) rectangular

Question 9

Which of the following favors delta formation?

Accepted Answer

A) strong ocean currents 
B) deep ocean water along the coast 
C) reservoirs upstream 
D) a large sediment load 
E) an extremely high tidal range 
A) strong ocean currents 
B) deep ocean water along the coast 
C) reservoirs upstream 
D) a large sediment load 
E) an extremely high tidal range

Question 10

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

Accepted Answer

The answer of Discuss the concept of the graded stream.Do...

Question 11

What conditions lead to the creation of an oxbow lake?

Accepted Answer

An oxbow lake is formed through a series

Question 12

Which of the following is correctly matched?

Accepted Answer

A) abrasion - a hydraulic squeeze-and-release action 
B) competence - a stream's ability to move particles of a specific size 
C) capacity - the total possible volume of water that a stream can transport 
D) fine particles physically held aloft in a stream - dissolved load 
E) particles rolled and bounced along a stream bed - suspended load 
A) abrasion - a hydraulic squeeze-and-release action 
B) competence - a stream's ability to move particles of a specific size 
C) capacity - the total possible volume of water that a stream can transport 
D) fine particles physically held aloft in a stream - dissolved load 
E) particles rolled and bounced along a stream bed - suspended load

Question 13

The largest material that can be carried by a stream is carried as

Accepted Answer

A) bed load. 
B) suspended load. 
C) dissolved load. 
D) truck load. 
E) volumetric load. 
A) bed load. 
B) suspended load. 
C) dissolved load. 
D) truck load. 
E) volumetric load.

Question 14

Which of the following is true of New Orleans and the passage of Hurricane Katrina?

Accepted Answer

A) only one levee was breached. 
B) the flood protection features failed only after their design-failure limits were reached. 
C) sections of New Orleans are below sea level. 
D) six investigations found that the protection system was flawless. 
E) only the failed levees are problematic,the remaining levees are fine. 
A) only one levee was breached. 
B) the flood protection features failed only after their design-failure limits were reached. 
C) sections of New Orleans are below sea level. 
D) six investigations found that the protection system was flawless. 
E) only the failed levees are problematic,the remaining levees are fine.

Question 15

When a dam and reservoir are constructed,the natural response of the river and its channel gradient come under the control of

Accepted Answer

A) the same base level that existed prior to construction. 
B) a local,or temporary,base level. 
C) the government. 
D) an ultimate base level. 
E) a calculated base level based on engineering design. 
A) the same base level that existed prior to construction. 
B) a local,or temporary,base level. 
C) the government. 
D) an ultimate base level. 
E) a calculated base level based on engineering design.

Question 16

Which of the following terms is used for a type of stream transport?

Accepted Answer

A) saltation. 
B) discharge. 
C) abrasion. 
D) sheet flow. 
E) overland flow. 
A) saltation. 
B) discharge. 
C) abrasion. 
D) sheet flow. 
E) overland flow.

Question 17

When a stream is graded (at grade),it has attained its lowest possible gradient and slowest flow velocity.

Accepted Answer

A) True 
 B)False

Question 18

A flood recurrence interval of 100 years means that floods of that size will occur only once every 100 years.

Accepted Answer

A) True 
 B)False

Question 19

A major drainage basin consists of a single watershed.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is true of floodplains?

Accepted Answer

A) they rarely occur in a fluvial landscape. 
B) they are erosional landforms. 
C) they often evolve after a stream has ceased downcutting at a significant rate. 
D) they are the areas of a stream where terraces are present. 
E) they interrupt the stream profile. 
A) they rarely occur in a fluvial landscape. 
B) they are erosional landforms. 
C) they often evolve after a stream has ceased downcutting at a significant rate. 
D) they are the areas of a stream where terraces are present. 
E) they interrupt the stream profile.

Exam 14: River Systems and Landforms

The ultimate base level is

Stream width,depth,and velocity can all change in response to changes in discharge rates.

The Ganges River is an example of an arcuate delta,whereas the Mississippi River is a bird-foot delta.

What happens to the flow velocity and erosive power of a stream during a high discharge event if levees have been created to confine flow to the channel? (Remember Q = wdv)

What factors account for the disappearance of the Nile River delta?

An increase in turbulence

Of the world's largest rivers,which has the greatest discharge?

A central peak,such as a volcanic mountain,generally produces a ________ drainage pattern.

Which of the following favors delta formation?

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

What conditions lead to the creation of an oxbow lake?

Which of the following is correctly matched?

The largest material that can be carried by a stream is carried as

Which of the following is true of New Orleans and the passage of Hurricane Katrina?

When a dam and reservoir are constructed,the natural response of the river and its channel gradient come under the control of

Which of the following terms is used for a type of stream transport?

When a stream is graded (at grade),it has attained its lowest possible gradient and slowest flow velocity.

A flood recurrence interval of 100 years means that floods of that size will occur only once every 100 years.

A major drainage basin consists of a single watershed.

Which of the following is true of floodplains?

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