Question 1

Which event is best represented by the hydrograph shown here?

Accepted Answer

A) A summer thunderstorm 
B) A very long period of steady light rain 
C) A long drought with no rain for months 
D) A winter snowstorm followed by very cold weather 
A) A summer thunderstorm 
B) A very long period of steady light rain 
C) A long drought with no rain for months 
D) A winter snowstorm followed by very cold weather

Question 2

Which of the following features is NOT formed by stream deposition?

Accepted Answer

A) broad plains next to a braided stream 
B) a floodplain 
C) a delta 
D) a waterfall 
A) broad plains next to a braided stream 
B) a floodplain 
C) a delta 
D) a waterfall

Question 3

Which of the following is commonly associated with tributaries?

Accepted Answer

A) Rapids when the tributary joins the main river 
B) Delivery of sediment to the main river 
C) An increase in the discharge in the main river 
D) All of these are correct. 
A) Rapids when the tributary joins the main river 
B) Delivery of sediment to the main river 
C) An increase in the discharge in the main river 
D) All of these are correct.

Question 4

At which site along this stream would a point bar form?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 5

What could cause this stream to begin carving into the landscape?

Accepted Answer

A) If base level is lowered,such as a drop in sea level 
B) If the land is uplifted relative to the sea 
C) If a change in climate weathers and weakens the rocks 
D) All of these are correct. 
A) If base level is lowered,such as a drop in sea level 
B) If the land is uplifted relative to the sea 
C) If a change in climate weathers and weakens the rocks 
D) All of these are correct.

Question 6

Which of the following can have a significant effect on a river?

Accepted Answer

A) rises and drops in sea level 
B) tectonics 
C) types of bedrock in the river 
D) changes in climate 
E) All of these are correct. 
A) rises and drops in sea level 
B) tectonics 
C) types of bedrock in the river 
D) changes in climate 
E) All of these are correct.

Question 7

Using this plot of annual peak discharge,what is the probability each year that a flood of 1,000 cubic meters per second will occur?

Accepted Answer

A) 1 in 1,000,or 0.01% 
B) 1 in 100,or 1% (100-year flood) 
C) Between 10% and 20% 
D) More than 20% 
A) 1 in 1,000,or 0.01% 
B) 1 in 100,or 1% (100-year flood) 
C) Between 10% and 20% 
D) More than 20%

Question 8

Which of the following sites is most likely to be flooded if all other factors are held constant?

Accepted Answer

A) a site that is higher but closer to the river than a site that is lower but farther from the river 
B) a site next to the river where the main channel is wider and deeper than other segments of the river 
C) a site on the floodplain instead of a site on an older terrace 
D) All of these are correct. 
A) a site that is higher but closer to the river than a site that is lower but farther from the river 
B) a site next to the river where the main channel is wider and deeper than other segments of the river 
C) a site on the floodplain instead of a site on an older terrace 
D) All of these are correct.

Question 9

On this graph of discharge versus season for a river in the Rocky Mountains,why is the highest runoff likely to be in the spring?

Accepted Answer

A) Winter snow melts in the spring. 
B) The Rocky Mountains have many tornadoes during the spring. 
C) The Rocky Mountains experience hurricanes in the spring. 
D) All of these are correct. 
A) Winter snow melts in the spring. 
B) The Rocky Mountains have many tornadoes during the spring. 
C) The Rocky Mountains experience hurricanes in the spring. 
D) All of these are correct.

Question 10

What would happen if the amount of ice in this area increases?

Accepted Answer

A) The land near the ice would rise. 
B) The area near the ice would experience isostatic rebound. 
C) The weight of the ice depresses the land,possibly causing the river to change direction. 
D) None of these are correct. 
A) The land near the ice would rise. 
B) The area near the ice would experience isostatic rebound. 
C) The weight of the ice depresses the land,possibly causing the river to change direction. 
D) None of these are correct.

Question 11

How is an alluvial fan formed?

Accepted Answer

A) A stream erodes down through older terraces and entrenched meanders. 
B) Sediment is deposited by debris flows and streams that decrease in velocity along the mountain front. 
C) A landslide blocks the stream,causing sediment to accumulate upstream. 
D) A dam increases the speed of currents below the dam. 
A) A stream erodes down through older terraces and entrenched meanders. 
B) Sediment is deposited by debris flows and streams that decrease in velocity along the mountain front. 
C) A landslide blocks the stream,causing sediment to accumulate upstream. 
D) A dam increases the speed of currents below the dam.

Question 12

Which of the features on this aerial photograph is a cut bank?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 13

What can you conclude by comparing the left and right hydrographs,each of which depict the same amount of time?

Accepted Answer

A) The left diagram has a higher peak discharge. 
B) The right diagram represents a quicker event,like a flash flood. 
C) Neither graph shows a true flood. 
D) None of these are correct. 
A) The left diagram has a higher peak discharge. 
B) The right diagram represents a quicker event,like a flash flood. 
C) Neither graph shows a true flood. 
D) None of these are correct.

Question 14

Which of the following is properly called a flood?

Accepted Answer

A) When a meander is cut off and forms a lake 
B) When the entire bottom of the channel is covered with water 
C) If water spreads out over the floodplain 
D) When water is 1 meter below the top of the channel 
A) When a meander is cut off and forms a lake 
B) When the entire bottom of the channel is covered with water 
C) If water spreads out over the floodplain 
D) When water is 1 meter below the top of the channel

Question 15

Which of the following is true about the 1993 upper Mississippi River flood and 1976 Thompson River flood?

Accepted Answer

A) Both floods lasted approximately the same amount of time. 
B) Both floods resulted from similar-sized storms. 
C) In both floods,most damage occurred on a broad floodplain adjacent to the river. 
D) None of these are correct. 
A) Both floods lasted approximately the same amount of time. 
B) Both floods resulted from similar-sized storms. 
C) In both floods,most damage occurred on a broad floodplain adjacent to the river. 
D) None of these are correct.

Question 16

What type of stream is shown in this figure?

Accepted Answer

A) Meandering stream 
B) Braided stream 
C) A stream whose main channel has high sinuosity 
D) An esker 
A) Meandering stream 
B) Braided stream 
C) A stream whose main channel has high sinuosity 
D) An esker

Question 17

At which point or points does the current flow fastest in the center of the channel?   
A)A
B)B
C)C
D)D

Accepted Answer

The answer of At which point or points does the...

Question 18

Which of the following accompanies urbanization (replacing farms and open areas with cities)?

Accepted Answer

A) The discharge pattern of streams in the area does not change. 
B) Runoff occurs more quickly and produces a higher peak flow. 
C) Runoff becomes more spread out in time,increasing the amount of flooding. 
D) Runoff becomes more spread out in time,reducing the amount of flooding. 
E) None of these are correct. 
A) The discharge pattern of streams in the area does not change. 
B) Runoff occurs more quickly and produces a higher peak flow. 
C) Runoff becomes more spread out in time,increasing the amount of flooding. 
D) Runoff becomes more spread out in time,reducing the amount of flooding. 
E) None of these are correct.

Question 19

Which of the following is true about levees?

Accepted Answer

A) They are a reliable way to protect an area from flooding. 
B) To be called a levee,a feature needs to be at least partly constructed by humans. 
C) A levee can trap water on the floodplain after the flood has subsided. 
D) None of these are correct. 
A) They are a reliable way to protect an area from flooding. 
B) To be called a levee,a feature needs to be at least partly constructed by humans. 
C) A levee can trap water on the floodplain after the flood has subsided. 
D) None of these are correct.

Question 20

Which of the following statements about streams is not true?

Accepted Answer

A) Base level is the lowest elevation to which a stream can erode. 
B) A steep stream high above base level generally will be eroding its channel. 
C) Some streams can simply transport material instead of eroding or depositing material. 
D) Streams typically do not respond to a change in climate. 
A) Base level is the lowest elevation to which a stream can erode. 
B) A steep stream high above base level generally will be eroding its channel. 
C) Some streams can simply transport material instead of eroding or depositing material. 
D) Streams typically do not respond to a change in climate.

Which event is best represented by the hydrograph shown here?

Which of the following features is NOT formed by stream deposition?

Which of the following is commonly associated with tributaries?

At which site along this stream would a point bar form?

What could cause this stream to begin carving into the landscape?

Which of the following can have a significant effect on a river?

Using this plot of annual peak discharge,what is the probability each year that a flood of 1,000 cubic meters per second will occur?

Which of the following sites is most likely to be flooded if all other factors are held constant?

On this graph of discharge versus season for a river in the Rocky Mountains,why is the highest runoff likely to be in the spring?

What would happen if the amount of ice in this area increases?

How is an alluvial fan formed?

Which of the features on this aerial photograph is a cut bank?

What can you conclude by comparing the left and right hydrographs,each of which depict the same amount of time?

Which of the following is properly called a flood?

Which of the following is true about the 1993 upper Mississippi River flood and 1976 Thompson River flood?

What type of stream is shown in this figure?

At which point or points does the current flow fastest in the center of the channel? A)A B)B C)C D)D

Which of the following accompanies urbanization (replacing farms and open areas with cities)?

Which of the following is true about levees?

Which of the following statements about streams is not true?

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Exam 13: Streams and Flooding

Which event is best represented by the hydrograph shown here?

Which of the following features is NOT formed by stream deposition?

Which of the following is commonly associated with tributaries?

At which site along this stream would a point bar form?

What could cause this stream to begin carving into the landscape?

Which of the following can have a significant effect on a river?

Using this plot of annual peak discharge,what is the probability each year that a flood of 1,000 cubic meters per second will occur?

Which of the following sites is most likely to be flooded if all other factors are held constant?

On this graph of discharge versus season for a river in the Rocky Mountains,why is the highest runoff likely to be in the spring?

What would happen if the amount of ice in this area increases?

How is an alluvial fan formed?

Which of the features on this aerial photograph is a cut bank?

What can you conclude by comparing the left and right hydrographs,each of which depict the same amount of time?

Which of the following is properly called a flood?

Which of the following is true about the 1993 upper Mississippi River flood and 1976 Thompson River flood?

What type of stream is shown in this figure?

At which point or points does the current flow fastest in the center of the channel? A)A B)B C)C D)D

Which of the following accompanies urbanization (replacing farms and open areas with cities)?

Which of the following is true about levees?

Which of the following statements about streams is not true?

The Nature of Physical Geography

Energy and Matter in the Atmosphere

Atmospheric Motion

Atmospheric Moisture

Weather Systems and Severe Weather

Atmosphere-Ocean-Cryosphere Interactions

Climates Around the World

Water Resources

Understanding Landscapes

Plate Tectonics and Regional Features

Volcanoes,deformation,and Earthquakes

Weathering and Mass Wasting

Glaciers and Glacial Landforms

Coasts and Changing Sea Levels

Soils

Ecosystems and Biogeochemical Cycles

Biomes

Filters