Question 1

What other major natural hazard can be caused by wildfires?

Accepted Answer

The answer of What other major natural hazard can be...

Question 2

Pine beetles have killed many acres of forest in British Columbia and Alberta.Discuss the links among beetles' life cycle,wildfires,and climate change.

Accepted Answer

Beetle larvae are killed by cold tempera

Question 3

Presently in Canada most wildfires are started by

Accepted Answer

A)  people. 
B)  lightning. 
C)  asteroids. 
D)  spontaneous combustion. 
E)  rockfalls. 
A)  people. 
B)  lightning. 
C)  asteroids. 
D)  spontaneous combustion. 
E)  rockfalls.

Question 4

What happens to vegetation when it is preheated?

Accepted Answer

It loses a great dea

Question 5

Though the number of large wildfires in California has not changed significantly in the past few hundred years,their size,intensity,and effect on people has.Why?

Accepted Answer

Because the population of Cali

Question 6

Which of the following describes radiation,which is one kind of heat transfer process during the combustion phase of wildfire?

Accepted Answer

A)  heat transfer though electromagnetic waves 
B)  transmission of heat through molecular contact 
C)  heat transfer by the movement of heated gases driven by temperature differences in air 
D)  heat transfer by endothermic chemical reactions 
E)  heat transfer by splitting large fuel molecules into smaller ones 
A)  heat transfer though electromagnetic waves 
B)  transmission of heat through molecular contact 
C)  heat transfer by the movement of heated gases driven by temperature differences in air 
D)  heat transfer by endothermic chemical reactions 
E)  heat transfer by splitting large fuel molecules into smaller ones

Question 7

Houses on hillsides are usually safe from wildfires because the fires cannot climb hills.

Accepted Answer

A) True 
 B)False

Question 8

Why does the specific geographic area at risk from wildfires change from year to year?

Accepted Answer

Because wildfires are weather

Question 9

How does the fire season in Canada differ from the fire season in the United States?

Accepted Answer

The fire season in Canada exte

Question 10

Describe one example of a plant that has evolved to utilize fire in its life cycle.

Accepted Answer

Some species of pine trees hav

Question 11

Which of the following best describes what happens during the preignition process in wildfire development?

Accepted Answer

A)  Fuel is heated, it loses water and is ready to be ignited. 
B)  Fuel at the front of a fire is ignited. 
C)  Fuel gains carbon dioxide and is ready to burn. 
D)  Gases heat and expand into fuel. 
E)  Gases cool and contract to produce fuel. 
A)  Fuel is heated, it loses water and is ready to be ignited. 
B)  Fuel at the front of a fire is ignited. 
C)  Fuel gains carbon dioxide and is ready to burn. 
D)  Gases heat and expand into fuel. 
E)  Gases cool and contract to produce fuel.

Question 12

Only people can prevent forest fires.

Accepted Answer

A) True 
 B)False

Question 13

How can fire increase post-fire erosion?

Accepted Answer

A)  by removing dead wood that was holding soil in place 
B)  by creating a hydrophobic layer above which the soil erodes 
C)  by baking soil and creating an impervious surface layer 
D)  by increasing the amount and intensity of post-fire rainfall 
E)  by accelerating the breakdown of rock into erodible soil 
A)  by removing dead wood that was holding soil in place 
B)  by creating a hydrophobic layer above which the soil erodes 
C)  by baking soil and creating an impervious surface layer 
D)  by increasing the amount and intensity of post-fire rainfall 
E)  by accelerating the breakdown of rock into erodible soil

Question 14

What is the first process that occurs in the combustion phase of fire?

Accepted Answer

A)  preheating 
B)  pyrolysis 
C)  flaming combustion 
D)  ignition 
E)  extinction 
A)  preheating 
B)  pyrolysis 
C)  flaming combustion 
D)  ignition 
E)  extinction

Question 15

When is a fire considered extinct?

Accepted Answer

When it no longer ha

Question 16

In Canada,the total area burned by wild fires in the first half of the 20th century was less than the total area burned in the second half of the 20th century.

Accepted Answer

A) True 
 B)False

Question 17

Fire requires the following three conditions

Accepted Answer

A)  fuel, heat, and lightning. 
B)  oxygen, dry conditions and lightning. 
C)  fuel, oxygen, and heat. 
D)  fuel, oxygen, and dry conditions. 
E)  oxygen, dry conditions, and heat. 
A)  fuel, heat, and lightning. 
B)  oxygen, dry conditions and lightning. 
C)  fuel, oxygen, and heat. 
D)  fuel, oxygen, and dry conditions. 
E)  oxygen, dry conditions, and heat.

Question 18

Wildfire scientists and firefighters classify fire behaviour according to

Accepted Answer

A)  the wind speed at the fire site. 
B)  the amount of precipitation that has fallen in the region. 
C)  the humidity at the fire site. 
D)  the layer of fuel that is allowing the fire to spread. 
E)  the species of vegetation that is being burnt. 
A)  the wind speed at the fire site. 
B)  the amount of precipitation that has fallen in the region. 
C)  the humidity at the fire site. 
D)  the layer of fuel that is allowing the fire to spread. 
E)  the species of vegetation that is being burnt.

Question 19

What is pyrolysis?

Accepted Answer

Chemical degradation of organi

Question 20

Wildfires can generate their own wind.

Accepted Answer

A) True 
 B)False

What other major natural hazard can be caused by wildfires?

Pine beetles have killed many acres of forest in British Columbia and Alberta.Discuss the links among beetles' life cycle,wildfires,and climate change.

Presently in Canada most wildfires are started by

What happens to vegetation when it is preheated?

Though the number of large wildfires in California has not changed significantly in the past few hundred years,their size,intensity,and effect on people has.Why?

Which of the following describes radiation,which is one kind of heat transfer process during the combustion phase of wildfire?

Houses on hillsides are usually safe from wildfires because the fires cannot climb hills.

Why does the specific geographic area at risk from wildfires change from year to year?

How does the fire season in Canada differ from the fire season in the United States?

Describe one example of a plant that has evolved to utilize fire in its life cycle.

Which of the following best describes what happens during the preignition process in wildfire development?

Only people can prevent forest fires.

How can fire increase post-fire erosion?

What is the first process that occurs in the combustion phase of fire?

When is a fire considered extinct?

In Canada,the total area burned by wild fires in the first half of the 20th century was less than the total area burned in the second half of the 20th century.

Fire requires the following three conditions

Wildfire scientists and firefighters classify fire behaviour according to

What is pyrolysis?

Wildfires can generate their own wind.

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

What other major natural hazard can be caused by wildfires?

Pine beetles have killed many acres of forest in British Columbia and Alberta.Discuss the links among beetles' life cycle,wildfires,and climate change.

Presently in Canada most wildfires are started by

What happens to vegetation when it is preheated?

Though the number of large wildfires in California has not changed significantly in the past few hundred years,their size,intensity,and effect on people has.Why?

Which of the following describes radiation,which is one kind of heat transfer process during the combustion phase of wildfire?

Houses on hillsides are usually safe from wildfires because the fires cannot climb hills.

Why does the specific geographic area at risk from wildfires change from year to year?

How does the fire season in Canada differ from the fire season in the United States?

Describe one example of a plant that has evolved to utilize fire in its life cycle.

Which of the following best describes what happens during the preignition process in wildfire development?

Only people can prevent forest fires.

How can fire increase post-fire erosion?

What is the first process that occurs in the combustion phase of fire?

When is a fire considered extinct?

In Canada,the total area burned by wild fires in the first half of the 20th century was less than the total area burned in the second half of the 20th century.

Fire requires the following three conditions

Wildfire scientists and firefighters classify fire behaviour according to

What is pyrolysis?

Wildfires can generate their own wind.

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