Question 1

What is the role of convection in wildfires?

Accepted Answer

A)  Rising hot air in the fire pulls in fresh air to fuel the flames. 
B)  Rising hot air in the fire pulls in fresh air to extinguish the flames. 
C)  Sinking hot air in the fire pushes air out the fire to extinguish the flames. 
D)  Sinking hot air in the fire pushes air out of the fire to fuel the flames. 
E)  Rising and falling air within the fire causes the fire to reuse air as fuel. 
A)  Rising hot air in the fire pulls in fresh air to fuel the flames. 
B)  Rising hot air in the fire pulls in fresh air to extinguish the flames. 
C)  Sinking hot air in the fire pushes air out the fire to extinguish the flames. 
D)  Sinking hot air in the fire pushes air out of the fire to fuel the flames. 
E)  Rising and falling air within the fire causes the fire to reuse air as fuel.

Question 2

What is the difference between preheating and pyrolysis?

Accepted Answer

A)  Preheating is caused by added heat, pyrolysis is caused by added chemicals. 
B)  Preheating is a natural process, pyrolysis is man-made. 
C)  Preheating involves drying of the fuel, pyrolosis involves a chemical change in the fuel. 
D)  Only preheating is necessary for a wildfire. 
E)  Preheating changes the fuel, pyrolosis changes the products in a fire. 
A)  Preheating is caused by added heat, pyrolysis is caused by added chemicals. 
B)  Preheating is a natural process, pyrolysis is man-made. 
C)  Preheating involves drying of the fuel, pyrolosis involves a chemical change in the fuel. 
D)  Only preheating is necessary for a wildfire. 
E)  Preheating changes the fuel, pyrolosis changes the products in a fire.

Question 3

Which of the following is NOT required for a fire to burn?

Accepted Answer

A)  Heat 
B)  Fuel 
C)  Oxygen 
D)  Carbon dioxide 
A)  Heat 
B)  Fuel 
C)  Oxygen 
D)  Carbon dioxide

Question 4

Which of the following statements about wildfire combustion is TRUE?

Accepted Answer

A)  Wildfires ignite repeatedly in order to keep moving. 
B)  All lightning strikes, if they have enough energy, will cause a wildfire to ignite. 
C)  Human activity is the only thing that can ignite a wildfire. 
D)  Combustion involves the absorption of energy in a fire. 
A)  Wildfires ignite repeatedly in order to keep moving. 
B)  All lightning strikes, if they have enough energy, will cause a wildfire to ignite. 
C)  Human activity is the only thing that can ignite a wildfire. 
D)  Combustion involves the absorption of energy in a fire.

Question 5

Which type of wildfire would you most likely see moving through a dry swamp during a drought?

Accepted Answer

A)  Ground fires 
B)  Surface fires 
C)  Crown fires 
D)  Tree fires 
E)  Drought fires 
A)  Ground fires 
B)  Surface fires 
C)  Crown fires 
D)  Tree fires 
E)  Drought fires

Question 6

Flaming combustion usually involves higher temperatures than smoldering combustion.

Accepted Answer

A) True 
 B)False

Question 7

How does topography influence a wildfire?

Accepted Answer

Topography can have a profound effect on

Question 8

Prescribed burns to reduce the fuel load have been extremely successful in stopping large wildfires in southern California.

Accepted Answer

A) True 
 B)False

Question 9

Fires will occur whether or not people start them, and humans play a relatively minor role in affecting large wildfires.

Accepted Answer

A) True 
 B)False

Question 10

Ignition by a lightning strike will always lead to a wildfire.

Accepted Answer

A) True 
 B)False

Question 11

Describe some of the positive effects of wildfires.

Accepted Answer

Fires tend to leave an accumulation of c

Question 12

Which North American regions are most vulnerable to wildfire? Why does the risk shift from year to year?

Accepted Answer

Large wildfires, however, are most commo

Question 13

Most animals are able to escape from the actual flames of a wildfire, but are harmed by destruction to their habitats.

Accepted Answer

A) True 
 B)False

Question 14

Wildfires are mostly caused by people and can be prevented through more education.

Accepted Answer

A) True 
 B)False

Question 15

Large wildfires that occur regularly in a location every 50 to 100 years will not become established unless sufficient fuel is present.

Accepted Answer

A) True 
 B)False

Question 16

Florida is the only U.S. state that has never experienced wildfire.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following best describes what happens during the combustion phase of wildfires?

Accepted Answer

A)  Fuel is heated and ready to be ignited. 
B)  Fuel is ignited, leading to flames and smoldering. 
C)  Fuel explodes causing the wildfires to extinguish. 
D)  Fire reaches a source of water where it reacts strongly. 
A)  Fuel is heated and ready to be ignited. 
B)  Fuel is ignited, leading to flames and smoldering. 
C)  Fuel explodes causing the wildfires to extinguish. 
D)  Fire reaches a source of water where it reacts strongly.

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

In which of the following regions are wildfires LEAST likely to begin?

Accepted Answer

A)  Grasslands 
B)  Woodlands 
C)  Marshes 
D)  Rainforests 
E)  Sand dunes with no vegetation 
A)  Grasslands 
B)  Woodlands 
C)  Marshes 
D)  Rainforests 
E)  Sand dunes with no vegetation

Question 20

Which of the following is NOT released during wildfire?

Accepted Answer

A)  Heat 
B)  Water vapor 
C)  Oxygen 
D)  Carbon dioxide 
E)  Light 
A)  Heat 
B)  Water vapor 
C)  Oxygen 
D)  Carbon dioxide 
E)  Light

What is the role of convection in wildfires?

What is the difference between preheating and pyrolysis?

Which of the following is NOT required for a fire to burn?

Which of the following statements about wildfire combustion is TRUE?

Which type of wildfire would you most likely see moving through a dry swamp during a drought?

Flaming combustion usually involves higher temperatures than smoldering combustion.

How does topography influence a wildfire?

Prescribed burns to reduce the fuel load have been extremely successful in stopping large wildfires in southern California.

Fires will occur whether or not people start them, and humans play a relatively minor role in affecting large wildfires.

Ignition by a lightning strike will always lead to a wildfire.

Describe some of the positive effects of wildfires.

Which North American regions are most vulnerable to wildfire? Why does the risk shift from year to year?

Most animals are able to escape from the actual flames of a wildfire, but are harmed by destruction to their habitats.

Wildfires are mostly caused by people and can be prevented through more education.

Large wildfires that occur regularly in a location every 50 to 100 years will not become established unless sufficient fuel is present.

Florida is the only U.S. state that has never experienced wildfire.

Which of the following best describes what happens during the combustion phase of wildfires?

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

In which of the following regions are wildfires LEAST likely to begin?

Which of the following is NOT released during wildfire?

Introduction to Natural Hazards

Internal Structure of the Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes

Flooding

Mass Wasting

Subsidence and Soils

Atmosphere and Severe Weather

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Exam 13: Wildfires

What is the role of convection in wildfires?

What is the difference between preheating and pyrolysis?

Which of the following is NOT required for a fire to burn?

Which of the following statements about wildfire combustion is TRUE?

Which type of wildfire would you most likely see moving through a dry swamp during a drought?

Flaming combustion usually involves higher temperatures than smoldering combustion.

How does topography influence a wildfire?

Prescribed burns to reduce the fuel load have been extremely successful in stopping large wildfires in southern California.

Fires will occur whether or not people start them, and humans play a relatively minor role in affecting large wildfires.

Ignition by a lightning strike will always lead to a wildfire.

Describe some of the positive effects of wildfires.

Which North American regions are most vulnerable to wildfire? Why does the risk shift from year to year?

Most animals are able to escape from the actual flames of a wildfire, but are harmed by destruction to their habitats.

Wildfires are mostly caused by people and can be prevented through more education.

Large wildfires that occur regularly in a location every 50 to 100 years will not become established unless sufficient fuel is present.

Florida is the only U.S. state that has never experienced wildfire.

Which of the following best describes what happens during the combustion phase of wildfires?

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

In which of the following regions are wildfires LEAST likely to begin?

Which of the following is NOT released during wildfire?

Introduction to Natural Hazards

Internal Structure of the Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes

Flooding

Mass Wasting

Subsidence and Soils

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Coastal Hazards

Climate and Climate Change

Impacts and Extinctions

Filters