AU 61 Chapter 5 Exam Questions and Answers All Correct
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Course
AU 61
Institution
AU 61
AU 61 Chapter 5 Exam Questions and Answers All Correct
The presence of which one of the following elements of construction in a building would affect the vertical spread of fire more than the horizontal spread of fire?
Select one:
A. A dropped ceiling
B. A window
C. An elevator
D. A crawl ...
AU 61 Chapter 5 Exam Questions
and Answers All Correct
The presence of which one of the following elements of construction in a building would
affect the vertical spread of fire more than the horizontal spread of fire?
Select one:
A. A dropped ceiling
B. A window
C. An elevator
D. A crawl space - Answer ✔ C. An elevator
Which one of the following processes of heat transfer explains the rapid spread of fire in
vertical openings such as elevators and stairs?
Select one:
A. Conduction
B. Combustion
C. Radiation
D. Convection - Answer ✔ D. Convection
Flash flaming can spread fire suddenly over a large area in which one of the following
ways?
Select one:
A. Sudden introduction of a fresh supply of oxygen
B. Convection
C. Conduction
D. Radiation - Answer ✔ A. Sudden introduction of a fresh supply of oxygen
Regarding flame spread due to flashover, which one of the following statements is true?
Select one:
A. Flashover is the ignition of all the fire-resistive substances in a space containing a
large, hostile fire.
B. Flashover occurs when flammable dust, vapors, or gases in an area come in contact
with an ignition source.
C. Flashover occurs when heat rises and ignites vapors, which initiate a chemical chain
reaction.
D. Flashover can occur only if all of the combustibles in a room absorb heat at
approximately the same rate and have approximately the same self-ignition point. -
Answer ✔ D. Flashover can occur only if all of the combustibles in a room absorb heat
at approximately the same rate and have approximately the same self-ignition point.
, Which one of the following statements is true regarding fire damage resulting from
heat?
Select one:
A. Noncombustible materials are not damaged by heat.
B. Heat damage often causes collapse.
C. Heat damage is rarely as severe as fire damage.
D. Materials with higher caloric value release less heat. - Answer ✔ B. Heat damage
often causes collapse.
To date, the most costly wildfires in the U.S. have occurred in which one of the following
states?
Select one:
A. New Mexico
B. Arizona
C. California
D. Nevada - Answer ✔ C. California
Which one of the following is the most common cause of ignition in wildfires?
Select one:
A. Downed electrical lines
B. Arson
C. Campfires
D. Lightning strikes - Answer ✔ D. Lightning strikes
Fire differs from other forms of oxidation in which one of the following ways?
Select one:
A. It can sustain itself without oxygen.
B. It requires a fuel source.
C. The speed at which the chemical reaction occurs is different.
D. It releases energy in the form of heat. - Answer ✔ C. The speed at which the
chemical reaction occurs is different.
Extreme friction provides which one of the following basic components of fire?
Select one:
A. Fuel
B. Oxygen
C. Uninterrupted chain reaction
D. Heat - Answer ✔ D. Heat
The fire tetrahedron model illustrates that if any of the four components of fire were
removed, the fire would do which one of the following?
Select one:
A. Spread
B. Ignite
C. Extinguish
D. Create another chemical reaction - Answer ✔ C. Extinguish
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