Question 1

At what point does a river begin to flood?

Accepted Answer

When overbank flow f

Question 2

The gradient of a stream is greatest at the river mouth.

Accepted Answer

A) True 
 B)False

Question 3

Floodplains are usually built

Accepted Answer

A)  in the summer. 
B)  by bedload. 
C)  during channel avulsion. 
D)  at times of overbank flow. 
E)  by dissolved load. 
A)  in the summer. 
B)  by bedload. 
C)  during channel avulsion. 
D)  at times of overbank flow. 
E)  by dissolved load.

Question 4

An anastomosing river channel is characterised by

Accepted Answer

A)  a large number of intersecting active channels. 
B)  a single channel shaped like a snake. 
C)  a curving channel that migrates back and forth. 
D)  two or more channels and intervening stable islands. 
E)  avulsing channels and riffles. 
A)  a large number of intersecting active channels. 
B)  a single channel shaped like a snake. 
C)  a curving channel that migrates back and forth. 
D)  two or more channels and intervening stable islands. 
E)  avulsing channels and riffles.

Question 5

The worst flood disasters in human history (based on numbers of casualties)have occurred in

Accepted Answer

A)  Indonesia. 
B)  Thailand. 
C)  India. 
D)  Canada. 
E)  China. 
A)  Indonesia. 
B)  Thailand. 
C)  India. 
D)  Canada. 
E)  China.

Question 6

An important lesson learned from the 1993 Mississippi flood was

Accepted Answer

A)  levees remove land from the floodplain. 
B)  levees eliminate flood risk. 
C)  levees help the floodplain "soak up" flood waters. 
D)  the construction of levees produces a false sense of security. 
E)  levees built by farmers performed as well as government-built levees. 
A)  levees remove land from the floodplain. 
B)  levees eliminate flood risk. 
C)  levees help the floodplain "soak up" flood waters. 
D)  the construction of levees produces a false sense of security. 
E)  levees built by farmers performed as well as government-built levees.

Question 7

How are pools formed in a meandering river?

Accepted Answer

Pools are produced by scour at

Question 8

Converting forest land to agricultural land typically increases surface erosion.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is NOT a flood-proofing technique?

Accepted Answer

A)  constructing flood walls around buildings 
B)  placing dykes along the river to divert flood waters 
C)  installing drains with pumps to remove the water 
D)  installing ground level windows that open to allow flood waters to pass through the building 
E)  using waterproofed doors and windows 
A)  constructing flood walls around buildings 
B)  placing dykes along the river to divert flood waters 
C)  installing drains with pumps to remove the water 
D)  installing ground level windows that open to allow flood waters to pass through the building 
E)  using waterproofed doors and windows

Question 10

What does the total load of a river consist of?

Accepted Answer

The total load consi

Question 11

How can urbanization change the lag time between peak rainfall and a flood event?

Accepted Answer

The increase in impervious cov

Question 12

The centre of the most recent ice sheet to cover most of Canada was to the north and northeast of southern Manitoba.All else being equal,which of the following rivers in southern Manitoba would be most prone to flooding?

Accepted Answer

A)  a river flowing to the north 
B)  a river flowing to the south 
C)  a river flowing to the southwest 
D)  a river flowing to the west 
E)  a river flowing to the southeast 
A)  a river flowing to the north 
B)  a river flowing to the south 
C)  a river flowing to the southwest 
D)  a river flowing to the west 
E)  a river flowing to the southeast

Question 13

How does the duration of a flood event change as the flood crest moves down river?

Accepted Answer

The durati

Question 14

What is a typical cause of flash floods?

Accepted Answer

A)  melting snowpack 
B)  a prolonged rainy season 
C)  steep slopes and wet soil 
D)  logjam breakup 
E)  intense rainfall 
A)  melting snowpack 
B)  a prolonged rainy season 
C)  steep slopes and wet soil 
D)  logjam breakup 
E)  intense rainfall

Question 15

The northern Ontario town of Winisk was completely destroyed by flooding in 1986.This flooding was a result of

Accepted Answer

A)  a hurricane. 
B)  ice-jams. 
C)  an outburst from a glacial melt. 
D)  a rain-on-snow event. 
E)  an earthquake. 
A)  a hurricane. 
B)  ice-jams. 
C)  an outburst from a glacial melt. 
D)  a rain-on-snow event. 
E)  an earthquake.

Question 16

The phrase "The Gift of the Nile" refers to

Accepted Answer

A)  the fresh water the Nile provides. 
B)  the Aswan Dam built on the Nile in 1970. 
C)  flooding of the Nile. 
D)  transportation along the Nile. 
E)  the dissolved load the Nile transports. 
A)  the fresh water the Nile provides. 
B)  the Aswan Dam built on the Nile in 1970. 
C)  flooding of the Nile. 
D)  transportation along the Nile. 
E)  the dissolved load the Nile transports.

Question 17

In Canada,the federal criterion for defining the flood risk in an area is based on

Accepted Answer

A)  the average magnitude of the annual flood. 
B)  the 1-in-10 year flood. 
C)  the 1-in-50 year flood. 
D)  the 1-in-100 year flood. 
E)  the 1-in-200 year flood. 
A)  the average magnitude of the annual flood. 
B)  the 1-in-10 year flood. 
C)  the 1-in-50 year flood. 
D)  the 1-in-100 year flood. 
E)  the 1-in-200 year flood.

Question 18

Consider a stream that begins at 1000 m elevation in the mountains and flows to sea level over a distance of 500 km.What is its base level?

Accepted Answer

A)  0 m 
B)  100 m 
C)  250 m 
D)  500 m 
E)  1000 m 
A)  0 m 
B)  100 m 
C)  250 m 
D)  500 m 
E)  1000 m

Question 19

Identify the four benefits of dam construction.

Accepted Answer

1.reduce downstream

Question 20

The 2010 flood in Pakistan

Accepted Answer

A)  could be classified as a downstream flood. 
B)  occurred very rapidly. 
C)  was associated with a large cyclone. 
D)  displaced 21 million people. 
E)  killed over 1 million people. 
A)  could be classified as a downstream flood. 
B)  occurred very rapidly. 
C)  was associated with a large cyclone. 
D)  displaced 21 million people. 
E)  killed over 1 million people.

At what point does a river begin to flood?

The gradient of a stream is greatest at the river mouth.

Floodplains are usually built

An anastomosing river channel is characterised by

The worst flood disasters in human history (based on numbers of casualties)have occurred in

An important lesson learned from the 1993 Mississippi flood was

How are pools formed in a meandering river?

Converting forest land to agricultural land typically increases surface erosion.

Which of the following is NOT a flood-proofing technique?

What does the total load of a river consist of?

How can urbanization change the lag time between peak rainfall and a flood event?

The centre of the most recent ice sheet to cover most of Canada was to the north and northeast of southern Manitoba.All else being equal,which of the following rivers in southern Manitoba would be most prone to flooding?

How does the duration of a flood event change as the flood crest moves down river?

What is a typical cause of flash floods?

The northern Ontario town of Winisk was completely destroyed by flooding in 1986.This flooding was a result of

The phrase "The Gift of the Nile" refers to

In Canada,the federal criterion for defining the flood risk in an area is based on

Consider a stream that begins at 1000 m elevation in the mountains and flows to sea level over a distance of 500 km.What is its base level?

Identify the four benefits of dam construction.

The 2010 flood in Pakistan

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

Atmosphere and Severe Weather

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Exam 9: River Flooding

At what point does a river begin to flood?

The gradient of a stream is greatest at the river mouth.

Floodplains are usually built

An anastomosing river channel is characterised by

The worst flood disasters in human history (based on numbers of casualties)have occurred in

An important lesson learned from the 1993 Mississippi flood was

How are pools formed in a meandering river?

Converting forest land to agricultural land typically increases surface erosion.

Which of the following is NOT a flood-proofing technique?

What does the total load of a river consist of?

How can urbanization change the lag time between peak rainfall and a flood event?

The centre of the most recent ice sheet to cover most of Canada was to the north and northeast of southern Manitoba.All else being equal,which of the following rivers in southern Manitoba would be most prone to flooding?

How does the duration of a flood event change as the flood crest moves down river?

What is a typical cause of flash floods?

The northern Ontario town of Winisk was completely destroyed by flooding in 1986.This flooding was a result of

The phrase "The Gift of the Nile" refers to

In Canada,the federal criterion for defining the flood risk in an area is based on

Consider a stream that begins at 1000 m elevation in the mountains and flows to sea level over a distance of 500 km.What is its base level?

Identify the four benefits of dam construction.

The 2010 flood in Pakistan

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters