Question 1

Peak discharge in flash floods can be reached in

Accepted Answer

A)  less than 10 minutes. 
B)  10-20 minutes. 
C)  30-60 minutes. 
D)  1-2 hours. 
E)  2-3 hours. 
A)  less than 10 minutes. 
B)  10-20 minutes. 
C)  30-60 minutes. 
D)  1-2 hours. 
E)  2-3 hours.

Question 2

Floods tend to have devastating effects on aquatic ecosystems.

Accepted Answer

A) True 
 B)False

Question 3

What is runoff?

Accepted Answer

Runoff is surface fl

Question 4

Identify and explain three natural service functions of flooding.

Accepted Answer

1.Fertile Land - nutrient rich depositio

Question 5

How can human-built dams disrupt the natural service functions of flooding?

Accepted Answer

Dams trap sediment behind them,starving

Question 6

Which of the following is NOT a channel restoration technique?

Accepted Answer

A)  reestablishing deeper pools 
B)  protecting channel banks by planting native trees 
C)  removing urban waste from stream channels 
D)  straightening of the river channel 
E)  reestablishing shallower riffles 
A)  reestablishing deeper pools 
B)  protecting channel banks by planting native trees 
C)  removing urban waste from stream channels 
D)  straightening of the river channel 
E)  reestablishing shallower riffles

Question 7

Meandering channels tend to be narrower and deeper than braided channels.

Accepted Answer

A) True 
 B)False

Question 8

Outburst floods and flash floods are essentially the same thing.

Accepted Answer

A) True 
 B)False

Question 9

Southward flowing rivers in Canada routinely produce ice-jam flooding in the spring.

Accepted Answer

A) True 
 B)False

Question 10

At what time of year do most large rivers in North America flood?

Accepted Answer

A)  late spring 
B)  summer 
C)  early fall 
D)  late fall 
E)  winter 
A)  late spring 
B)  summer 
C)  early fall 
D)  late fall 
E)  winter

Question 11

At which of the following places along a stream will erosion be the greatest?

Accepted Answer

A)  on the floodplain 
B)  near the headwaters 
C)  near the river mouth 
D)  at the base level 
E)  on the inside curve of river meanders 
A)  on the floodplain 
B)  near the headwaters 
C)  near the river mouth 
D)  at the base level 
E)  on the inside curve of river meanders

Question 12

Discuss the risks of building levees to protect human infrastructure along rivers with very high sediment load.

Accepted Answer

Rivers that carry a lot of sediment also

Question 13

What are the arguments against channelizing streams?

Accepted Answer

Draining wetlands adversely affects habi

Question 14

If you saw an aerial photograph of a river that had multiple active channels intersecting one another,how would you classify that type of channel pattern?

Accepted Answer

A)  meandering 
B)  anastomosing 
C)  braided 
D)  deluvian 
E)  alluvial 
A)  meandering 
B)  anastomosing 
C)  braided 
D)  deluvian 
E)  alluvial

Question 15

Compare and contrast the US and Canadian approaches to managing flood hazards.

Accepted Answer

Canadian: planning,regulation and zoning

Question 16

How can flooding cause fires in populated areas?

Accepted Answer

Floodwaters can produce short

Question 17

Which of the following is a secondary effect of flooding?

Accepted Answer

A)  loss of life by drowning 
B)  damage to infrastructure 
C)  hunger 
D)  damage to crops 
E)  sediment deposition 
A)  loss of life by drowning 
B)  damage to infrastructure 
C)  hunger 
D)  damage to crops 
E)  sediment deposition

Question 18

Small streams can flood at any time of the year.

Accepted Answer

A) True 
 B)False

Question 19

Riffles are deep areas created by scour at high flow.

Accepted Answer

A) True 
 B)False

Question 20

Describe a feature that a river builds when it flows from a mountains onto a plain.

Accepted Answer

The river will build

Peak discharge in flash floods can be reached in

Floods tend to have devastating effects on aquatic ecosystems.

What is runoff?

Identify and explain three natural service functions of flooding.

How can human-built dams disrupt the natural service functions of flooding?

Which of the following is NOT a channel restoration technique?

Meandering channels tend to be narrower and deeper than braided channels.

Outburst floods and flash floods are essentially the same thing.

Southward flowing rivers in Canada routinely produce ice-jam flooding in the spring.

At what time of year do most large rivers in North America flood?

At which of the following places along a stream will erosion be the greatest?

Discuss the risks of building levees to protect human infrastructure along rivers with very high sediment load.

What are the arguments against channelizing streams?

If you saw an aerial photograph of a river that had multiple active channels intersecting one another,how would you classify that type of channel pattern?

Compare and contrast the US and Canadian approaches to managing flood hazards.

How can flooding cause fires in populated areas?

Which of the following is a secondary effect of flooding?

Small streams can flood at any time of the year.

Riffles are deep areas created by scour at high flow.

Describe a feature that a river builds when it flows from a mountains onto a plain.

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

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Exam 9: River Flooding

Peak discharge in flash floods can be reached in

Floods tend to have devastating effects on aquatic ecosystems.

What is runoff?

Identify and explain three natural service functions of flooding.

How can human-built dams disrupt the natural service functions of flooding?

Which of the following is NOT a channel restoration technique?

Meandering channels tend to be narrower and deeper than braided channels.

Outburst floods and flash floods are essentially the same thing.

Southward flowing rivers in Canada routinely produce ice-jam flooding in the spring.

At what time of year do most large rivers in North America flood?

At which of the following places along a stream will erosion be the greatest?

Discuss the risks of building levees to protect human infrastructure along rivers with very high sediment load.

What are the arguments against channelizing streams?

If you saw an aerial photograph of a river that had multiple active channels intersecting one another,how would you classify that type of channel pattern?

Compare and contrast the US and Canadian approaches to managing flood hazards.

How can flooding cause fires in populated areas?

Which of the following is a secondary effect of flooding?

Small streams can flood at any time of the year.

Riffles are deep areas created by scour at high flow.

Describe a feature that a river builds when it flows from a mountains onto a plain.

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