Question 1

V-shaped stream valleys result from the downcutting of stream erosion and ____________

Accepted Answer

A)   mass wasting on the valley sides
B)   isostatic rebound
C)   the "rule of the V's"
D)   conservation of angular momentumE) A) and C)
F) A) and B)

Question 2

Which has greater competence?

Accepted Answer

A)   a small mountain stream
B)   the Mississippi RiverC) A) and B)
D) undefined

Question 3

In a region with prominent perpendicular sets of joints,a ____________ drainage network is expected.

Accepted Answer

A)   dendritic
B)   radial
C)   rectangular
D)   trellisE) B) and C)
F) A) and C)

Question 4

The sediment load of a stream consists of only those grains that are fine enough to stay in suspension.

Accepted Answer

A) True 
 B)False  False

Question 5

Braided streams ____________.

Accepted Answer

A)   consist of a series of intertwined channels that are overloaded with sediment
B)   have flowing water either episodically or during a portion of the year
C)   have a channel that is highly sinuous (curvy) 
D)   are those that divert flow from streams they have, through stream erosion, intersectedE) A) and C)
F) B) and C)

Question 6

The outer edge of a meander,where material is being eroded,is a(n) ____________.

Accepted Answer

A)   meander neck
B)   cut bank
C)   point bar
D)   abandoned meanderE) B) and C)
F) A) and B)

Question 7

All flowing,as opposed to standing,water on the Earth's surface is confined to stream channels.

Accepted Answer

A) True 
 B)False

Question 8

The stream gradient of most rivers ____________.

Accepted Answer

A)   is greater near the source than near the mouth
B)   is greater near the mouth than near the source
C)   does not change significantly as the river flows downstream
D)   is greater for a meandering stream than for any other typeE) B) and D)
F) None of the above A

Question 9

The flat-lying area surrounding a river channel is termed the ____________.

Accepted Answer

A)   base level
B)   floodplain
C)   stream gradient
D)   thalwegE) B) and C)
F) C) and D)

Question 10

The deltas of all major rivers consist of multiple radiating lobes of sediment in a "bird's foot" configuration,similar to the Mississippi River delta.

Accepted Answer

A) True 
 B)False

Question 11

In the region immediately surrounding an isolated volcano,a ____________ drainage network is expected.

Accepted Answer

A)   dendritic
B)   radial
C)   rectangular
D)   trellisE) All of the above
F) B) and D)

Question 12

The distinction between a valley and a canyon is ____________.

Accepted Answer

A)   nonexistent; the two terms are synonymous
B)   the sides of a canyon are steeper than those of a valley
C)   the sides of a valley are steeper than those of a canyon
D)   valleys are often cut by streams; canyons are eroded out by the windE) A) and B)
F) None of the above

Question 13

The lowest elevation to which a stream can downcut is the ____________.

Accepted Answer

A)   base level
B)   floodplain
C)   stream gradient
D)   thalwegE) All of the above
F) None of the above

Question 14

The shape of a delta is primarily determined by ____________.

Accepted Answer

A)   the shape of the river channel near the mouth
B)   the average grain size of the suspended and bed loads
C)   whether river currents, wave-driven currents, or tidal currents are locally predominant
D)   the type of rock that is weathering at outcrops near the headwaters of the riverE) A) and D)
F) C) and D)

Question 15

All flooding events occur so rapidly that there is no time to alert people in harm's way.

Accepted Answer

A) True 
 B)False  False

Question 16

At a waterfall,where two sedimentary lithologies are juxtaposed,which lithology is more likely to form the cliff over which the water falls?

Accepted Answer

A)   sandstone
B)   shaleC) A) and B)
D) undefined

Question 17

Within a meander,where is sediment most likely to be deposited?

Accepted Answer

A)   on the outer banks of the meander
B)   on the inner banks of the meander
C)   uniformly to either side of the meanderD) A) and C)
E) All of the above

Question 18

An arroyo refers to ____________.

Accepted Answer

A)   the inner bank of a meander, where sediment is deposited
B)   an earthen levee designed to reduce flooding in a portion of the floodplain
C)   an ephemeral stream channel that only has discharge after rainfall or snowmelt
D)   a point in a stream channel where it is relatively easy to crossE) All of the above
F) A) and D)

Question 19

Ephemeral streams ____________.

Accepted Answer

A)   consist of a series of intertwined channels that are overloaded with sediment
B)   have flowing water either episodically or during a portion of the year
C)   have a channel that is highly sinuous (curvy) 
D)   are those that divert flow from streams they have, through stream erosion, intersectedE) A) and D)
F) A) and C)

Question 20

The discharge of a river traveling through a humid region will typically ___________ downstream; the discharge of a river traveling through an arid region will typically ____________ downstream.

Accepted Answer

A)   increase; increase
B)   decrease; decrease
C)   increase; decrease
D)   decrease; increaseE) A) and C)
F) C) and D)

Exam 14: Running Water: the Geology of Streams and Floods

V-shaped stream valleys result from the downcutting of stream erosion and ____________

Correct AnswerverifiedShow Answer

Which has greater competence?

Correct AnswerverifiedShow Answer

In a region with prominent perpendicular sets of joints,a ____________ drainage network is expected.

Correct AnswerverifiedShow Answer

The sediment load of a stream consists of only those grains that are fine enough to stay in suspension.

Correct AnswerverifiedFalse

Braided streams ____________.

Correct AnswerverifiedShow Answer

The outer edge of a meander,where material is being eroded,is a(n) ____________.

Correct AnswerverifiedShow Answer

All flowing,as opposed to standing,water on the Earth's surface is confined to stream channels.

Correct AnswerverifiedShow Answer

The stream gradient of most rivers ____________.

Correct AnswerverifiedA

The flat-lying area surrounding a river channel is termed the ____________.

Correct AnswerverifiedShow Answer

The deltas of all major rivers consist of multiple radiating lobes of sediment in a "bird's foot" configuration,similar to the Mississippi River delta.

Correct AnswerverifiedShow Answer

In the region immediately surrounding an isolated volcano,a ____________ drainage network is expected.

Correct AnswerverifiedShow Answer

The distinction between a valley and a canyon is ____________.

Correct AnswerverifiedShow Answer

The lowest elevation to which a stream can downcut is the ____________.

Correct AnswerverifiedShow Answer

The shape of a delta is primarily determined by ____________.

Correct AnswerverifiedShow Answer

All flooding events occur so rapidly that there is no time to alert people in harm's way.

Correct AnswerverifiedFalse

At a waterfall,where two sedimentary lithologies are juxtaposed,which lithology is more likely to form the cliff over which the water falls?

Correct AnswerverifiedShow Answer

Within a meander,where is sediment most likely to be deposited?

Correct AnswerverifiedShow Answer

An arroyo refers to ____________.

Correct AnswerverifiedShow Answer

Ephemeral streams ____________.

Correct AnswerverifiedShow Answer

The discharge of a river traveling through a humid region will typically ___________ downstream; the discharge of a river traveling through an arid region will typically ____________ downstream.

Correct AnswerverifiedShow Answer

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False

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A

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False

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The discharge of a river traveling through a humid region will typically _ downstream; the discharge of a river traveling through an arid region will typically __ downstream.

Correct Answer
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