IFSTA ESSENTIALS OF FIRE FIGHTING
- CHAPTER 5: FIRE BEHAVIOR (LATEST
2026/ 2027 UPDATE) QUESTIONS AND
100% CORRECT VERIFIED ANSWERS|
GRADE A+
1. Which of the following describes a chemical reaction that releases energy in the form of
heat and light?
A. Endothermic reaction
B. Synthesis
C. Sublimation
D. Exothermic reaction
Answer: D
Conceptual Explanation: An exothermic reaction is a chemical reaction that releases
energy, usually in the form of heat and light, whereas an endothermic reaction absorbs
energy.
2. Which component was added to the fire triangle to create the fire tetrahedron?
A. Oxygen
B. Heat
,C. Fuel
D. Chemical chain reaction
Answer: D
Conceptual Explanation: The fire tetrahedron includes the original three elements
(oxygen, fuel, heat) plus a self-sustaining chemical chain reaction.
3. Potential energy is best defined as:
A. Stored energy possessed by an object
B. The amount of heat required to raise temperature
C. Energy in motion
D. The measure of a material’s conductivity
Answer: A
Conceptual Explanation: Potential energy is stored energy that can be released, such as
the energy found in a pile of wood or a tank of propane.
4. What is the term for the minimum temperature at which a fuel in the air must be heated to
start self-sustained combustion without an external spark or flame?
A. Autoignition temperature
B. Flash point
C. Fire point
, D. Piloted ignition temperature
Answer: A
Conceptual Explanation: Autoignition temperature (AIT) is the minimum temperature at
which a substance will spontaneously ignite without an external ignition source.
5. Which type of ignition occurs when a mixture of fuel and oxygen encounters an external
heat source with sufficient energy to start the combustion process?
A. Non-piloted ignition
B. Autoignition
C. Piloted ignition
D. Spontaneous ignition
Answer: C
Conceptual Explanation: Piloted ignition is the most common type, involving an external
source like a match, spark, or lighter.
6. Which form of heat transfer occurs through the movement of hot smoke and fire gases?
A. Conduction
B. Convection
C. Radiation
D. Induction
- CHAPTER 5: FIRE BEHAVIOR (LATEST
2026/ 2027 UPDATE) QUESTIONS AND
100% CORRECT VERIFIED ANSWERS|
GRADE A+
1. Which of the following describes a chemical reaction that releases energy in the form of
heat and light?
A. Endothermic reaction
B. Synthesis
C. Sublimation
D. Exothermic reaction
Answer: D
Conceptual Explanation: An exothermic reaction is a chemical reaction that releases
energy, usually in the form of heat and light, whereas an endothermic reaction absorbs
energy.
2. Which component was added to the fire triangle to create the fire tetrahedron?
A. Oxygen
B. Heat
,C. Fuel
D. Chemical chain reaction
Answer: D
Conceptual Explanation: The fire tetrahedron includes the original three elements
(oxygen, fuel, heat) plus a self-sustaining chemical chain reaction.
3. Potential energy is best defined as:
A. Stored energy possessed by an object
B. The amount of heat required to raise temperature
C. Energy in motion
D. The measure of a material’s conductivity
Answer: A
Conceptual Explanation: Potential energy is stored energy that can be released, such as
the energy found in a pile of wood or a tank of propane.
4. What is the term for the minimum temperature at which a fuel in the air must be heated to
start self-sustained combustion without an external spark or flame?
A. Autoignition temperature
B. Flash point
C. Fire point
, D. Piloted ignition temperature
Answer: A
Conceptual Explanation: Autoignition temperature (AIT) is the minimum temperature at
which a substance will spontaneously ignite without an external ignition source.
5. Which type of ignition occurs when a mixture of fuel and oxygen encounters an external
heat source with sufficient energy to start the combustion process?
A. Non-piloted ignition
B. Autoignition
C. Piloted ignition
D. Spontaneous ignition
Answer: C
Conceptual Explanation: Piloted ignition is the most common type, involving an external
source like a match, spark, or lighter.
6. Which form of heat transfer occurs through the movement of hot smoke and fire gases?
A. Conduction
B. Convection
C. Radiation
D. Induction
