Question 1

Give the equation for stream discharge.What happens to stream velocity if discharge and depth remain the same,but width increases?

Accepted Answer

The answer of Give the equation for stream discharge.What happens...

Question 2

The effect of urbanization on a typical stream hydrograph is to

Accepted Answer

A) create a base flow. 
B) increase lag time between storm peak and peak stream discharge. 
C) decrease runoff. 
D) decrease lag time between storm peak and peak stream discharge. 
E) eliminate all flooding downstream. 
A) create a base flow. 
B) increase lag time between storm peak and peak stream discharge. 
C) decrease runoff. 
D) decrease lag time between storm peak and peak stream discharge. 
E) eliminate all flooding downstream.

Question 3

A cutoff on a meandering stream results in the formation of

Accepted Answer

A) an oxbow lake. 
B) a levee. 
C) a point bar. 
D) a terrace. 
E) a braided stream. 
A) an oxbow lake. 
B) a levee. 
C) a point bar. 
D) a terrace. 
E) a braided stream.

Question 4

Erosion of the walls of a channel normally occurs on the outside curve of a meander.

Accepted Answer

A) True 
 B)False

Question 5

In response to the occurrence of a local base level,

Accepted Answer

A) a stream continues to operate to reduce its landscape to sea level-the ultimate base level. 
B) sediments accumulate in response to the loss of flow velocity. 
C) sea level changes. 
D) this situation never occurs in nature. 
E) the stream cuts downward. 
A) a stream continues to operate to reduce its landscape to sea level-the ultimate base level. 
B) sediments accumulate in response to the loss of flow velocity. 
C) sea level changes. 
D) this situation never occurs in nature. 
E) the stream cuts downward.

Question 6

The downstream portion of a river

Accepted Answer

A) generally becomes more sluggish. 
B) generally is of higher velocity,although it is masked by reduced turbulence. 
C) features greater hydraulic action than do upstream portions. 
D) has lower discharges than do upstream portions. 
E) meanders as a result of the system operating to expend the most effort. 
A) generally becomes more sluggish. 
B) generally is of higher velocity,although it is masked by reduced turbulence. 
C) features greater hydraulic action than do upstream portions. 
D) has lower discharges than do upstream portions. 
E) meanders as a result of the system operating to expend the most effort.

Question 7

Drainage density refers to

Accepted Answer

A) the thickness of the water in the stream. 
B) the number of channels in an area. 
C) a measure determined by dividing the length of all the channels by the area of its drainage basin. 
D) the arrangement of channels in a given area. 
E) the volume of water in the drainage basin. 
A) the thickness of the water in the stream. 
B) the number of channels in an area. 
C) a measure determined by dividing the length of all the channels by the area of its drainage basin. 
D) the arrangement of channels in a given area. 
E) the volume of water in the drainage basin.

Question 8

Describe the formation of deltas and present the characteristics of at least three delta types.

Accepted Answer

Deltas are landforms that form at the mo

Question 9

Describe five common drainage patterns and the conditions that typically form them.

Accepted Answer

The answer of Describe five common drainage patterns and the...

Question 10

Stream drainage patterns are determined by which of the following?

Accepted Answer

A) slope and type of rock 
B) volume of water 
C) wind speeds in the drainage basin 
D) frequency of severe storms 
E) average annual temperature 
A) slope and type of rock 
B) volume of water 
C) wind speeds in the drainage basin 
D) frequency of severe storms 
E) average annual temperature

Question 11

The average size of sediment in a natural levee is ________ that found in the surrounding floodplain.

Accepted Answer

A) larger than 
B) smaller than 
C) the same size as 
A) larger than 
B) smaller than 
C) the same size as

Question 12

Which drainage pattern is produced by folded topography?

Accepted Answer

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

Question 13

A meandering stream is one that is

Accepted Answer

A) completely stable. 
B) completely unstable. 
C) delicately balanced between equilibrium and chaos. 
D) closed in terms of energy and matter input. 
E) closed in terms of energy,but open with respect to matter input. 
A) completely stable. 
B) completely unstable. 
C) delicately balanced between equilibrium and chaos. 
D) closed in terms of energy and matter input. 
E) closed in terms of energy,but open with respect to matter input.

Question 14

If a stream has just the gradient and discharge to transport its sediment load,it is said to be

Accepted Answer

A) "fit." 
B) competent. 
C) graded. 
D) in a nonequilibrium state. 
E) chaotic 
A) "fit." 
B) competent. 
C) graded. 
D) in a nonequilibrium state. 
E) chaotic

Question 15

Terraces form when a river's energy increases.

Accepted Answer

A) True 
 B)False

Question 16

Most of Saskatchewan,Manitoba,and Ontario are in which major drainage basin?

Accepted Answer

A) Hudson Bay 
B) Arctic 
C) Missouri 
D) Upper Mississippi 
E) Pacific 
A) Hudson Bay 
B) Arctic 
C) Missouri 
D) Upper Mississippi 
E) Pacific

Question 17

Floodplain formation occurs while a stream is downcutting rapidly.

Accepted Answer

A) True 
 B)False

Question 18

Nickpoints migrate downstream.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is used to measure streamflow?

Accepted Answer

A) stilling well and staff gauge 
B) barometer and sling psychrometer 
C) statistical methods of probability 
D) reservoirs 
E) anemometers 
A) stilling well and staff gauge 
B) barometer and sling psychrometer 
C) statistical methods of probability 
D) reservoirs 
E) anemometers

Question 20

If you live in an area that was flooded by the 100-year flood last year,you can conclude that

Accepted Answer

A) the next 100-year flood will occur in exactly 100 years. 
B) the next 100-year flood will occur in exactly 99 years. 
C) you could be flooded by the 100-year flood again this year. 
D) you do not have to worry about another flood of that size during your lifetime. 
E) the next 100-year flood will occur in one half life,or 50 years. 
A) the next 100-year flood will occur in exactly 100 years. 
B) the next 100-year flood will occur in exactly 99 years. 
C) you could be flooded by the 100-year flood again this year. 
D) you do not have to worry about another flood of that size during your lifetime. 
E) the next 100-year flood will occur in one half life,or 50 years.

Exam 14: River Systems and Landforms

Give the equation for stream discharge.What happens to stream velocity if discharge and depth remain the same,but width increases?

The effect of urbanization on a typical stream hydrograph is to

A cutoff on a meandering stream results in the formation of

Erosion of the walls of a channel normally occurs on the outside curve of a meander.

In response to the occurrence of a local base level,

The downstream portion of a river

Drainage density refers to

Describe the formation of deltas and present the characteristics of at least three delta types.

Describe five common drainage patterns and the conditions that typically form them.

Stream drainage patterns are determined by which of the following?

The average size of sediment in a natural levee is ________ that found in the surrounding floodplain.

Which drainage pattern is produced by folded topography?

A meandering stream is one that is

If a stream has just the gradient and discharge to transport its sediment load,it is said to be

Terraces form when a river's energy increases.

Most of Saskatchewan,Manitoba,and Ontario are in which major drainage basin?

Floodplain formation occurs while a stream is downcutting rapidly.

Nickpoints migrate downstream.

Which of the following is used to measure streamflow?

If you live in an area that was flooded by the 100-year flood last year,you can conclude that

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