Question 1

Distributaries develop in the headwater region of a river.

Accepted Answer

A) True 
 B)False  False

Question 2

The base level concept was put forward by William Morris Davis in 1909.

Accepted Answer

A) True 
 B)False  False

Question 3

Which of the following is true of stormflow and hydrographs for urban areas?

Accepted Answer

A) the time lag between maximum precipitation and maximum discharge is more for urban areas than for rural areas. 
B) the time required for discharge to drop after a flood is shorter for urban areas than for rural areas. 
C) the amount of surface runoff is less in urban areas. 
D) urbanization decreases the possibility of a flood downstream from a major city. 
E) urbanization has a minimal effect on flooding and the storm hydrograph. 
A) the time lag between maximum precipitation and maximum discharge is more for urban areas than for rural areas. 
B) the time required for discharge to drop after a flood is shorter for urban areas than for rural areas. 
C) the amount of surface runoff is less in urban areas. 
D) urbanization decreases the possibility of a flood downstream from a major city. 
E) urbanization has a minimal effect on flooding and the storm hydrograph. B

Question 4

Rivers have played a relatively minor role in the geography of human history.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is correctly matched?

Accepted Answer

A) cut bank - inner portion of a stream meander 
B) point bar - area of substantial erosion 
C) aggradation - sediment accumulation in the stream channel 
D) braided stream - single,sinuous channel 
E) pool - shallowest part of the channel 
A) cut bank - inner portion of a stream meander 
B) point bar - area of substantial erosion 
C) aggradation - sediment accumulation in the stream channel 
D) braided stream - single,sinuous channel 
E) pool - shallowest part of the channel

Question 6

Over the past 5000 years,the Mississippi River has produced how many distinct deltaic formations?

Accepted Answer

A) only the present formation has existed 
B) two 
C) seven 
D) fifteen 
E) five hundred 
A) only the present formation has existed 
B) two 
C) seven 
D) fifteen 
E) five hundred

Question 7

At any one moment,approximately ________ of fresh water flows through Earth's rivers and streams.

Accepted Answer

A) 1250 km³ 
B) 13 000 km³ 
C) 104 000 km³ 
D) 22 percent (an amount equal to that in groundwater) 
E) 542 000 km³ 
A) 1250 km³ 
B) 13 000 km³ 
C) 104 000 km³ 
D) 22 percent (an amount equal to that in groundwater) 
E) 542 000 km³

Question 8

Which is typical of a rejuvenated system?

Accepted Answer

A) entrenched meanders and terraces 
B) oxbow lakes and downcutting 
C) decreased downcutting 
D) terraces and point bars 
E) point bars and meander scars 
A) entrenched meanders and terraces 
B) oxbow lakes and downcutting 
C) decreased downcutting 
D) terraces and point bars 
E) point bars and meander scars

Question 9

Stream-related processes are termed

Accepted Answer

A) hydrological. 
B) geomorphological. 
C) fluvial. 
D) erosion. 
E) aeolian. 
A) hydrological. 
B) geomorphological. 
C) fluvial. 
D) erosion. 
E) aeolian.

Question 10

The suspended load of a stream is the coarser materials that are dragged along the stream bed.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following rock types is most affected by fluvial solution?

Accepted Answer

A) granite 
B) sandstone 
C) rhyolite 
D) limestone 
E) marble 
A) granite 
B) sandstone 
C) rhyolite 
D) limestone 
E) marble

Question 12

The Colorado River,which carved the Grand Canyon,no longer reaches the sea because of water extraction.

Accepted Answer

A) True 
 B)False

Question 13

As base level is approached by a stream,the ability of a stream to erode its bed

Accepted Answer

A) increases. 
B) decreases. 
C) remains constant. 
A) increases. 
B) decreases. 
C) remains constant.

Question 14

The general term for clay,silt,and sand deposited by running water is

Accepted Answer

A) alluvium. 
B) debris. 
C) soil. 
D) mud. 
E) colluvium 
A) alluvium. 
B) debris. 
C) soil. 
D) mud. 
E) colluvium

Question 15

John Wesley Powell put forward the idea of base level,which refers to

Accepted Answer

A) an imagined surface that extends inland from sea level,and is inclined gently upward. 
B) a level above which a stream cannot erode its valley. 
C) an evolutionary cycle of landscape development. 
D) flat plateaus. 
E) the top surface of a delta. 
A) an imagined surface that extends inland from sea level,and is inclined gently upward. 
B) a level above which a stream cannot erode its valley. 
C) an evolutionary cycle of landscape development. 
D) flat plateaus. 
E) the top surface of a delta.

Question 16

Dam decommissioning and removal

Accepted Answer

A) allows fish habitat to return to a more natural state in many rivers in North America. 
B) will increase hydroelectric production. 
C) will prevent flooding along major waterways. 
D) allows sediment to be collected for removal from ponds. 
E) will increase the water temperature in rivers. 
A) allows fish habitat to return to a more natural state in many rivers in North America. 
B) will increase hydroelectric production. 
C) will prevent flooding along major waterways. 
D) allows sediment to be collected for removal from ponds. 
E) will increase the water temperature in rivers.

Question 17

Maximum velocity in a stream 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) in the geometric centre of the channel. 
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) in the geometric centre of the channel.

Question 18

Flood control often produces conditions of worse flooding in subsequent high-water events.

Accepted Answer

A) True 
 B)False

Question 19

The suspended load of a stream consists of particles that are

Accepted Answer

A) rolled and bounced along the stream bed. 
B) held aloft in the stream flow. 
C) dragged along the stream bed. 
D) dissolved in solution. 
E) attached to the bed. 
A) rolled and bounced along the stream bed. 
B) held aloft in the stream flow. 
C) dragged along the stream bed. 
D) dissolved in solution. 
E) attached to the bed.

Question 20

Bed load is moved by

Accepted Answer

A) saltation and traction 
B) traction and suspension. 
C) suspension and solution. 
D) traction and solution. 
E) saltation only. 
A) saltation and traction 
B) traction and suspension. 
C) suspension and solution. 
D) traction and solution. 
E) saltation only.

Exam 14: River Systems and Landforms

Distributaries develop in the headwater region of a river.

The base level concept was put forward by William Morris Davis in 1909.

Which of the following is true of stormflow and hydrographs for urban areas?

Rivers have played a relatively minor role in the geography of human history.

Which of the following is correctly matched?

Over the past 5000 years,the Mississippi River has produced how many distinct deltaic formations?

At any one moment,approximately ________ of fresh water flows through Earth's rivers and streams.

Which is typical of a rejuvenated system?

Stream-related processes are termed

The suspended load of a stream is the coarser materials that are dragged along the stream bed.

Which of the following rock types is most affected by fluvial solution?

The Colorado River,which carved the Grand Canyon,no longer reaches the sea because of water extraction.

As base level is approached by a stream,the ability of a stream to erode its bed

The general term for clay,silt,and sand deposited by running water is

John Wesley Powell put forward the idea of base level,which refers to

Dam decommissioning and removal

Maximum velocity in a stream is found

Flood control often produces conditions of worse flooding in subsequent high-water events.

The suspended load of a stream consists of particles that are

Bed load is moved by

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