Question 1

Does channelization of a stream completely prevent flooding?

Accepted Answer

A)  No. Nothing can prevent flooding, 
B)  No. It increases flooding. 
C)  Yes. It is the best solution for flooding and it has no drawbacks. 
D)  Yes. However, it is not necessarily good for habitats. 
E)  No one actually knows because channelization of a stream has never been applied to the real world. 
A)  No. Nothing can prevent flooding, 
B)  No. It increases flooding. 
C)  Yes. It is the best solution for flooding and it has no drawbacks. 
D)  Yes. However, it is not necessarily good for habitats. 
E)  No one actually knows because channelization of a stream has never been applied to the real world.

Question 2

Where does a meandering river run the fastest?

Accepted Answer

A)  On the outside of a bend 
B)  On the inside of a bend 
C)  All parts of a meandering river run at similar speeds. 
D)  Near the point bars 
A)  On the outside of a bend 
B)  On the inside of a bend 
C)  All parts of a meandering river run at similar speeds. 
D)  Near the point bars

Question 3

Which statement is FALSE  about the effects that floods can have?

Accepted Answer

A)  Floods can supply nutrients to soils for farming. 
B)  Floods can clear ecosystems of debris. 
C)  Floods can supply sediments to build up the elevation of land. 
D)  Floods can bring nutrients to ecosystems. 
E)  Flooding has no positive effects; it is always bad for human interests. 
A)  Floods can supply nutrients to soils for farming. 
B)  Floods can clear ecosystems of debris. 
C)  Floods can supply sediments to build up the elevation of land. 
D)  Floods can bring nutrients to ecosystems. 
E)  Flooding has no positive effects; it is always bad for human interests.

Question 4

Imagine that you were put in charge of planning a public awareness campaign about flooding. What are some of the most important things that you would want people to know? Why are these important?

Accepted Answer

People should know basic information abo

Question 5

How does urbanization affect flooding?

Accepted Answer

Urbanization increases both the magnitud

Question 6

There are some places that have too high a flood risk for people to rebuild; these homes usually are better off abandoned.

Accepted Answer

A) True 
 B)False

Question 7

What is the greatest hazard to people in a flash flood?

Accepted Answer

A)  Sediment deposits 
B)  Erosion of farmland 
C)  People driving into floods and being carried away 
D)  Houses and other buildings being carried away 
E)  Fires 
A)  Sediment deposits 
B)  Erosion of farmland 
C)  People driving into floods and being carried away 
D)  Houses and other buildings being carried away 
E)  Fires

Question 8

In which of the following environments are flash floods LEAST common?

Accepted Answer

A)  Higher elevations in a small drainage basin 
B)  Arid environments with steep slopes 
C)  Humid environments with large meandering rivers 
D)  Urban environments with poor drainage 
A)  Higher elevations in a small drainage basin 
B)  Arid environments with steep slopes 
C)  Humid environments with large meandering rivers 
D)  Urban environments with poor drainage

Question 9

Choose the best answer. Which would increase during a flood, discharge or velocity?

Accepted Answer

A)  Discharge only because there is more water flowing 
B)  Velocity only because the water is flowing faster 
C)  Neither discharge or velocity because the stream will be doing more erosion during a flood 
D)  Neither discharge or velocity because both are constant for any given stream 
E)  Both discharge and velocity will increase because there is more water flowing and it is flowing faster. 
A)  Discharge only because there is more water flowing 
B)  Velocity only because the water is flowing faster 
C)  Neither discharge or velocity because the stream will be doing more erosion during a flood 
D)  Neither discharge or velocity because both are constant for any given stream 
E)  Both discharge and velocity will increase because there is more water flowing and it is flowing faster.

Question 10

What happens to rivers when they reach their base level?

Accepted Answer

A)  Their discharge decreases. 
B)  They erode sediment. 
C)  They fill the bottom of a v-shaped valley. 
D)  They often form alluvial fans or deltas. 
A)  Their discharge decreases. 
B)  They erode sediment. 
C)  They fill the bottom of a v-shaped valley. 
D)  They often form alluvial fans or deltas.

Question 11

In which of the following cases would you expect the LEAST amount of flooding due to a rainstorm? Assume all areas receive similar amounts of rainfall in the rainstorm and there are no flood control measures in any of the areas.

Accepted Answer

A)  An area where soil is already saturated due to previous recent thunderstorms 
B)  An area where the ground is frozen 
C)  A short duration rainstorm falling on an area that is typically very dry such as a desert 
D)  A city with many houses, paved roads, and sidewalks 
E)  A long duration rainstorm falling on an area that consists of forest, grasslands, and no human development. 
A)  An area where soil is already saturated due to previous recent thunderstorms 
B)  An area where the ground is frozen 
C)  A short duration rainstorm falling on an area that is typically very dry such as a desert 
D)  A city with many houses, paved roads, and sidewalks 
E)  A long duration rainstorm falling on an area that consists of forest, grasslands, and no human development.

Question 12

A narrow river usually runs faster than a wider one.

Accepted Answer

A) True 
 B)False

Question 13

Paving over land decreases the amount of flooding because water can't soak into the soil.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following loads would make a river appear murky or dirty?

Accepted Answer

A)  Bed load 
B)  Suspended load 
C)  Dissolved load 
D)  Structural load 
E)  Buoyant load 
A)  Bed load 
B)  Suspended load 
C)  Dissolved load 
D)  Structural load 
E)  Buoyant load

Question 15

If you dip a glass of water into a river and passed the water through a very fine sieve that blocked all sediment grains from passing through, what will you be left with?

Accepted Answer

A)  Bed load 
B)  Suspended load 
C)  Dissolved load 
D)  Structural load 
A)  Bed load 
B)  Suspended load 
C)  Dissolved load 
D)  Structural load

Question 16

How would the hydrograph of a large rainstorm change after urbanization of an area?

Accepted Answer

A)  The hydrograph would become a straight line. 
B)  The peak of the hydrograph would become lower and wider. 
C)  The peak of the hydrograph would become higher and wider. 
D)  The peak of the hydrograph would become higher and narrower. 
E)  The peak of the hydrograph would become lower and narrower. 
A)  The hydrograph would become a straight line. 
B)  The peak of the hydrograph would become lower and wider. 
C)  The peak of the hydrograph would become higher and wider. 
D)  The peak of the hydrograph would become higher and narrower. 
E)  The peak of the hydrograph would become lower and narrower.

Question 17

Give an example of something that acts as a base level for streams. Explain what happens to the river as it reaches this level and why it is a base level. Sketch a longitudinal profile for this stream.

Accepted Answer

The base level of a river is the lowest

Question 18

Virtually all areas of the U.S. have some risk of flooding.

Accepted Answer

A) True 
 B)False

Question 19

During a flood, the safest place to be is behind a levee or floodwall.

Accepted Answer

A) True 
 B)False

Question 20

One of the benefits of flooding is deposition of fertile soil.

Accepted Answer

A) True 
 B)False

Does channelization of a stream completely prevent flooding?

Where does a meandering river run the fastest?

Which statement is FALSE about the effects that floods can have?

Imagine that you were put in charge of planning a public awareness campaign about flooding. What are some of the most important things that you would want people to know? Why are these important?

How does urbanization affect flooding?

There are some places that have too high a flood risk for people to rebuild; these homes usually are better off abandoned.

What is the greatest hazard to people in a flash flood?

In which of the following environments are flash floods LEAST common?

Choose the best answer. Which would increase during a flood, discharge or velocity?

What happens to rivers when they reach their base level?

In which of the following cases would you expect the LEAST amount of flooding due to a rainstorm? Assume all areas receive similar amounts of rainfall in the rainstorm and there are no flood control measures in any of the areas.

A narrow river usually runs faster than a wider one.

Paving over land decreases the amount of flooding because water can't soak into the soil.

Which of the following loads would make a river appear murky or dirty?

If you dip a glass of water into a river and passed the water through a very fine sieve that blocked all sediment grains from passing through, what will you be left with?

How would the hydrograph of a large rainstorm change after urbanization of an area?

Give an example of something that acts as a base level for streams. Explain what happens to the river as it reaches this level and why it is a base level. Sketch a longitudinal profile for this stream.

Virtually all areas of the U.S. have some risk of flooding.

During a flood, the safest place to be is behind a levee or floodwall.

One of the benefits of flooding is deposition of fertile soil.

Introduction to Natural Hazards

Internal Structure of the Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes

Mass Wasting

Subsidence and Soils

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Coastal Hazards

Climate and Climate Change

Wildfires

Impacts and Extinctions

Filters

Exam 6: Flooding

Does channelization of a stream completely prevent flooding?

Where does a meandering river run the fastest?

Which statement is FALSE about the effects that floods can have?

Imagine that you were put in charge of planning a public awareness campaign about flooding. What are some of the most important things that you would want people to know? Why are these important?

How does urbanization affect flooding?

There are some places that have too high a flood risk for people to rebuild; these homes usually are better off abandoned.

What is the greatest hazard to people in a flash flood?

In which of the following environments are flash floods LEAST common?

Choose the best answer. Which would increase during a flood, discharge or velocity?

What happens to rivers when they reach their base level?

In which of the following cases would you expect the LEAST amount of flooding due to a rainstorm? Assume all areas receive similar amounts of rainfall in the rainstorm and there are no flood control measures in any of the areas.

A narrow river usually runs faster than a wider one.

Paving over land decreases the amount of flooding because water can't soak into the soil.

Which of the following loads would make a river appear murky or dirty?

If you dip a glass of water into a river and passed the water through a very fine sieve that blocked all sediment grains from passing through, what will you be left with?

How would the hydrograph of a large rainstorm change after urbanization of an area?

Give an example of something that acts as a base level for streams. Explain what happens to the river as it reaches this level and why it is a base level. Sketch a longitudinal profile for this stream.

Virtually all areas of the U.S. have some risk of flooding.

During a flood, the safest place to be is behind a levee or floodwall.

One of the benefits of flooding is deposition of fertile soil.

Introduction to Natural Hazards

Internal Structure of the Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes

Mass Wasting

Subsidence and Soils

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Coastal Hazards

Climate and Climate Change

Wildfires

Impacts and Extinctions

Filters