Question 1

Imagine a wildfire occurs in a watershed that provides drinking water to a community.What is the most likely impact on the drinking water supply?

Accepted Answer

A)  The amount of water in the reservoir will stabilize due to rapid runoff. 
B)  Carbon from the ash will act as a natural filtration system for the water. 
C)  Water quality will increase because less debris will get into the reservoir. 
D)  Parasites in the water supply will increase, making the water unsafe to drink. 
E)  Erosion from slopes cleared by fire will decrease water quality. 
A)  The amount of water in the reservoir will stabilize due to rapid runoff. 
B)  Carbon from the ash will act as a natural filtration system for the water. 
C)  Water quality will increase because less debris will get into the reservoir. 
D)  Parasites in the water supply will increase, making the water unsafe to drink. 
E)  Erosion from slopes cleared by fire will decrease water quality.

Question 2

Under what conditions do wildfires develop?

Accepted Answer

Wildfires develop only when th

Question 3

In 1988,the natural-burn policy in Yellowstone National Park resulted in

Accepted Answer

A)  the destruction of the park ecosystem. 
B)  the death of 15 firefighters. 
C)  new fire-suppression policies. 
D)  a ban on all camp fires. 
E)  revitalized park ecosystems. 
A)  the destruction of the park ecosystem. 
B)  the death of 15 firefighters. 
C)  new fire-suppression policies. 
D)  a ban on all camp fires. 
E)  revitalized park ecosystems.

Question 4

The factors that contributed to the severity of the fires in British Columbia in 2003 and 2009 were

Accepted Answer

A)  lightning and an overabundance of forest fuel. 
B)  prolonged drought and lightning. 
C)  prolonged droughts and an overabundance of forest floor fuel. 
D)  consistently windy conditions. 
E)  ineffective fire suppression. 
A)  lightning and an overabundance of forest fuel. 
B)  prolonged drought and lightning. 
C)  prolonged droughts and an overabundance of forest floor fuel. 
D)  consistently windy conditions. 
E)  ineffective fire suppression.

Question 5

How do spot fires get started?

Accepted Answer

Burning material is

Question 6

Why are wildfires becoming more disastrous?

Accepted Answer

A)  Government resources for firefighting are insufficient. 
B)  Past fire-suppression techniques have increased the amount of fuel available. 
C)  The climate is getting drier as global temperatures rise. 
D)  The frequency and severity of lightning storms is increasing. 
E)  More people are moving to areas at risk for fire hazards. 
A)  Government resources for firefighting are insufficient. 
B)  Past fire-suppression techniques have increased the amount of fuel available. 
C)  The climate is getting drier as global temperatures rise. 
D)  The frequency and severity of lightning storms is increasing. 
E)  More people are moving to areas at risk for fire hazards.

Question 7

What is the aim of fire management?

Accepted Answer

It is to control wildfires for

Question 8

Some of the heat in a fire is transferred by radiation.

Accepted Answer

A) True 
 B)False

Question 9

Large wildfires in southern California

Accepted Answer

A)  are increasing in severity and intensity due to fire suppression. 
B)  rarely result in loss of property. 
C)  will likely become smaller in the future due to increased urbanization. 
D)  have increased greatly in number. 
E)  have decreased greatly in number. 
A)  are increasing in severity and intensity due to fire suppression. 
B)  rarely result in loss of property. 
C)  will likely become smaller in the future due to increased urbanization. 
D)  have increased greatly in number. 
E)  have decreased greatly in number.

Question 10

Which of the following is NOT a natural service function of wildfires?

Accepted Answer

A)  an increase in the nutrient content of a soil 
B)  the release of seeds from lodgepole pines 
C)  maintenance of stand age diversity 
D)  removal of species that have become too abundant in the forest ecosystem 
E)  removal of diseased, dying trees 
A)  an increase in the nutrient content of a soil 
B)  the release of seeds from lodgepole pines 
C)  maintenance of stand age diversity 
D)  removal of species that have become too abundant in the forest ecosystem 
E)  removal of diseased, dying trees

Question 11

Fire suppression policies over the past half century have reduced wildfire risk.

Accepted Answer

A) True 
 B)False

Question 12

The aim of fire management is to

Accepted Answer

A)  suppress all wildfires to protect the economic value of forests. 
B)  protect all human infrastructure regardless of economic value. 
C)  control fires to benefit ecosystems while protecting people and property. 
D)  remove fuel by letting natural wildfires burn until put out by natural processes. 
E)  determine where prescribed burns would be most beneficial. 
A)  suppress all wildfires to protect the economic value of forests. 
B)  protect all human infrastructure regardless of economic value. 
C)  control fires to benefit ecosystems while protecting people and property. 
D)  remove fuel by letting natural wildfires burn until put out by natural processes. 
E)  determine where prescribed burns would be most beneficial.

Question 13

Hot fires that scorch dry,coarse soil may lead to

Accepted Answer

A)  the formation of a water-repellent layer. 
B)  decreased surface runoff. 
C)  increased soil strength and fewer landslides. 
D)  increased water infiltration. 
E)  more debris flows. 
A)  the formation of a water-repellent layer. 
B)  decreased surface runoff. 
C)  increased soil strength and fewer landslides. 
D)  increased water infiltration. 
E)  more debris flows.

Question 14

On a scale of decades to centuries,the most important condition for initiating large wildfires is

Accepted Answer

A)  human carelessness. 
B)  volcanic activity. 
C)  lightning. 
D)  the climate. 
E)  forest composition. 
A)  human carelessness. 
B)  volcanic activity. 
C)  lightning. 
D)  the climate. 
E)  forest composition.

Question 15

Fire can increase the nutrient content of soil.

Accepted Answer

A) True 
 B)False

Question 16

What is the greatest risk during a well-planned,well-researched prescribed burn?

Accepted Answer

A)  The amount of fuel will change. 
B)  Fire fighting equipment will break down. 
C)  Nearby towns will have to be evacuated. 
D)  The weather will change. 
E)  Lightning strikes will increase the fire's area. 
A)  The amount of fuel will change. 
B)  Fire fighting equipment will break down. 
C)  Nearby towns will have to be evacuated. 
D)  The weather will change. 
E)  Lightning strikes will increase the fire's area.

Question 17

What is the purpose of prescribed burns?

Accepted Answer

To reduce the amount

Question 18

Crown fires can spread independently of surface fires.

Accepted Answer

A) True 
 B)False

Question 19

If you were to predict wildfire behaviour in a certain area,what three factors would be most important to consider?

Accepted Answer

Fuel type

Question 20

Why have wildfires become more hazardous in southern California in the past hundred years?

Accepted Answer

A)  Hot, dry Santa Ana winds have become more extreme. 
B)  El Niño conditions have become more severe. 
C)  Flammable vegetation in yards has increased. 
D)  More people have moved to fire-prone areas. 
E)  More forested slopes have been clearcut. 
A)  Hot, dry Santa Ana winds have become more extreme. 
B)  El Niño conditions have become more severe. 
C)  Flammable vegetation in yards has increased. 
D)  More people have moved to fire-prone areas. 
E)  More forested slopes have been clearcut.

Imagine a wildfire occurs in a watershed that provides drinking water to a community.What is the most likely impact on the drinking water supply?

Under what conditions do wildfires develop?

In 1988,the natural-burn policy in Yellowstone National Park resulted in

The factors that contributed to the severity of the fires in British Columbia in 2003 and 2009 were

How do spot fires get started?

Why are wildfires becoming more disastrous?

What is the aim of fire management?

Some of the heat in a fire is transferred by radiation.

Large wildfires in southern California

Which of the following is NOT a natural service function of wildfires?

Fire suppression policies over the past half century have reduced wildfire risk.

The aim of fire management is to

Hot fires that scorch dry,coarse soil may lead to

On a scale of decades to centuries,the most important condition for initiating large wildfires is

Fire can increase the nutrient content of soil.

What is the greatest risk during a well-planned,well-researched prescribed burn?

What is the purpose of prescribed burns?

Crown fires can spread independently of surface fires.

If you were to predict wildfire behaviour in a certain area,what three factors would be most important to consider?

Why have wildfires become more hazardous in southern California in the past hundred years?

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

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Climate Change

Meteorite Impacts and Extinctions

Filters

Exam 13: Wildfires

Imagine a wildfire occurs in a watershed that provides drinking water to a community.What is the most likely impact on the drinking water supply?

Under what conditions do wildfires develop?

In 1988,the natural-burn policy in Yellowstone National Park resulted in

The factors that contributed to the severity of the fires in British Columbia in 2003 and 2009 were

How do spot fires get started?

Why are wildfires becoming more disastrous?

What is the aim of fire management?

Some of the heat in a fire is transferred by radiation.

Large wildfires in southern California

Which of the following is NOT a natural service function of wildfires?

Fire suppression policies over the past half century have reduced wildfire risk.

The aim of fire management is to

Hot fires that scorch dry,coarse soil may lead to

On a scale of decades to centuries,the most important condition for initiating large wildfires is

Fire can increase the nutrient content of soil.

What is the greatest risk during a well-planned,well-researched prescribed burn?

What is the purpose of prescribed burns?

Crown fires can spread independently of surface fires.

If you were to predict wildfire behaviour in a certain area,what three factors would be most important to consider?

Why have wildfires become more hazardous in southern California in the past hundred years?

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

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Climate Change

Meteorite Impacts and Extinctions

Filters