Question 1

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 
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

Question 2

The lowest notch shown on this figure is 9 meters wide and 5 meters high from its base.The river has a velocity of 0.7 meters per second when it fills the notch.Based on the accompanying graph,what is the probability each year that the notch will be filled to the top?

Accepted Answer

A) 80 to 95% 
B) 60 to 70% 
C) 40 to 45% 
D) less than 40% 
E) none of these 
A) 80 to 95% 
B) 60 to 70% 
C) 40 to 45% 
D) less than 40% 
E) none of these

Question 3

Which of the following lessons was illustrated by flood data from the Colorado River and from the Yellowstone River?

Accepted Answer

A) fifty years is a long enough record to record all but a 100-year flood 
B) the largest flood possible along a river is likely to have been witnessed by humans 
C) few floods are ever larger than 10,000 cubic meters per second 
D) none of these 
A) fifty years is a long enough record to record all but a 100-year flood 
B) the largest flood possible along a river is likely to have been witnessed by humans 
C) few floods are ever larger than 10,000 cubic meters per second 
D) none of these

Question 4

What typically happens when tributaries join the main river?

Accepted Answer

A) channel size increases 
B) water velocity increases 
C) the amount of discharge increases 
D) total sediment load increases 
E) all of these 
A) channel size increases 
B) water velocity increases 
C) the amount of discharge increases 
D) total sediment load increases 
E) all of these

Question 5

Formation of entrenched meanders can result from a:

Accepted Answer

A) low-gradient river followed by downcutting 
B) braided river that later exceeds its capacity to carry sediment 
C) braided river followed by regional uplift 
D) steep-gradient mountain stream following by an increase in precipitation 
A) low-gradient river followed by downcutting 
B) braided river that later exceeds its capacity to carry sediment 
C) braided river followed by regional uplift 
D) steep-gradient mountain stream following by an increase in precipitation

Question 6

In the landscape pictured here,choose the location that you think would be best to put your house.

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 7

Which of the following features is most related to erosion along a low-gradient stream?

Accepted Answer

A) point bar 
B) floodplain 
C) levee 
D) none of these 
A) point bar 
B) floodplain 
C) levee 
D) none of these

Question 8

Which of the features on this aerial photograph is a cutbank?

Accepted Answer

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

Question 9

Which of these hydrographs shows a flash flood?

Accepted Answer

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

Question 10

Which of the following features are generally NOT associated with mountain streams and rivers?

Accepted Answer

A) waterfalls 
B) rapids 
C) canyons incised into bedrock 
D) meanders 
A) waterfalls 
B) rapids 
C) canyons incised into bedrock 
D) meanders

Question 11

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 12

Which of the following profiles does NOT match its position on the stream?

Accepted Answer

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

Question 13

Which of the following can influence a stream's profile?

Accepted Answer

A) a rise in sea level 
B) a fall in sea level 
C) tectonics 
D) all of these 
A) a rise in sea level 
B) a fall in sea level 
C) tectonics 
D) all of these

Question 14

Which of the following is NOT a common site for deposition of sediment?

Accepted Answer

A) point bar 
B) distributary system 
C) levee 
D) cutbank 
E) floodplain 
A) point bar 
B) distributary system 
C) levee 
D) cutbank 
E) floodplain

Question 15

What is a stream's discharge rate if it has a width of 10 meters,a depth of 2 meters,and a velocity of 2 meters per second?

Accepted Answer

A) 400 cubic meters per second 
B) 120 cubic meters per second 
C) 40 cubic meters per second 
D) 22 cubic meters per second 
E) 14 cubic meters per second 
A) 400 cubic meters per second 
B) 120 cubic meters per second 
C) 40 cubic meters per second 
D) 22 cubic meters per second 
E) 14 cubic meters per second

Question 16

What was the cause of flooding in the 1993 upper Mississippi River flood?

Accepted Answer

A) Heavy snowmelt in Canada sent large volumes of water down the river in the spring. 
B) A dam failed because it had been built in a risky place near a fault. 
C) Persistent thunderstorms caused large amounts of rainfall over a several-state region. 
D) Winter produced rain that melted snow that was on the ground. 
A) Heavy snowmelt in Canada sent large volumes of water down the river in the spring. 
B) A dam failed because it had been built in a risky place near a fault. 
C) Persistent thunderstorms caused large amounts of rainfall over a several-state region. 
D) Winter produced rain that melted snow that was on the ground.

Question 17

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 
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

Question 18

This plot shows the highest flow event that occurred each year on the Yellowstone River between 1924 and the 1990's.What is the maximum size of flood that probably can occur here?

Accepted Answer

A) up to 8,000 cubic meters per second 
B) more than 8,000 cubic meters per second and less than 9,000 cubic meters per second 
C) anything less than 9,000 cubic meters per second 
D) more than 9,000 cubic meters per second is possible 
A) up to 8,000 cubic meters per second 
B) more than 8,000 cubic meters per second and less than 9,000 cubic meters per second 
C) anything less than 9,000 cubic meters per second 
D) more than 9,000 cubic meters per second is possible

Question 19

Which of the features on this aerial photograph is a point bar?

Accepted Answer

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

Question 20

At which sites would this stream profile most likely be located?

Accepted Answer

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

Which of the following is commonly associated with tributaries?

The lowest notch shown on this figure is 9 meters wide and 5 meters high from its base.The river has a velocity of 0.7 meters per second when it fills the notch.Based on the accompanying graph,what is the probability each year that the notch will be filled to the top?

Which of the following lessons was illustrated by flood data from the Colorado River and from the Yellowstone River?

What typically happens when tributaries join the main river?

Formation of entrenched meanders can result from a:

In the landscape pictured here,choose the location that you think would be best to put your house.

Which of the following features is most related to erosion along a low-gradient stream?

Which of the features on this aerial photograph is a cutbank?

Which of these hydrographs shows a flash flood?

Which of the following features are generally NOT associated with mountain streams and rivers?

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

Which of the following profiles does NOT match its position on the stream?

Which of the following can influence a stream's profile?

Which of the following is NOT a common site for deposition of sediment?

What is a stream's discharge rate if it has a width of 10 meters,a depth of 2 meters,and a velocity of 2 meters per second?

What was the cause of flooding in the 1993 upper Mississippi River flood?

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

This plot shows the highest flow event that occurred each year on the Yellowstone River between 1924 and the 1990's.What is the maximum size of flood that probably can occur here?

Which of the features on this aerial photograph is a point bar?

At which sites would this stream profile most likely be located?

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Exam 16: Streams and Flooding

Which of the following is commonly associated with tributaries?

The lowest notch shown on this figure is 9 meters wide and 5 meters high from its base.The river has a velocity of 0.7 meters per second when it fills the notch.Based on the accompanying graph,what is the probability each year that the notch will be filled to the top?

Which of the following lessons was illustrated by flood data from the Colorado River and from the Yellowstone River?

What typically happens when tributaries join the main river?

Formation of entrenched meanders can result from a:

In the landscape pictured here,choose the location that you think would be best to put your house.

Which of the following features is most related to erosion along a low-gradient stream?

Which of the features on this aerial photograph is a cutbank?

Which of these hydrographs shows a flash flood?

Which of the following features are generally NOT associated with mountain streams and rivers?

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

Which of the following profiles does NOT match its position on the stream?

Which of the following can influence a stream's profile?

Which of the following is NOT a common site for deposition of sediment?

What is a stream's discharge rate if it has a width of 10 meters,a depth of 2 meters,and a velocity of 2 meters per second?

What was the cause of flooding in the 1993 upper Mississippi River flood?

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

This plot shows the highest flow event that occurred each year on the Yellowstone River between 1924 and the 1990's.What is the maximum size of flood that probably can occur here?

Which of the features on this aerial photograph is a point bar?

At which sites would this stream profile most likely be located?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

Volcanoes and Volcanic Hazards

Sedimentary Environments and Rocks

Deformation and Metamorphism

Geologic Time

The Seafloor and Continental Margins

Mountains, basins, and Continents

Earthquakes and Earths Interior

Climate, weather, and Their Influences on Geology

Glaciers, shorelines, and Changing Sea Levels

Weathering, soil, and Unstable Slopes

Water Resources

Energy and Mineral Resources

Geology of the Solar System

Filters