2024 TCPF FIRE INVESTIGATOR -
MASTER EXAM QUESTIONS AND
ANSWERS GRADED A+
Is NFPA 921 a guide or a standard?
It is the Guide for Fire and Explosion Investigations
What are the six steps of the scientific method?
Recognize the need
Define the problem
Collect the data
Analyze the data
Devel...
2024 TCPF FIRE INVESTIGATOR -
MASTER EXAM QUESTIONS AND
ANSWERS GRADED A+
Is NFPA 921 a guide or a standard?
It is the Guide for Fire and Explosion Investigations
What are the six steps of the scientific method?
Recognize the need
Define the problem
Collect the data
Analyze the data
Develop a hypothesis
Test the hypothesis
What step of the scientific method is inductive reasoning?
Analyze the data
What step of the scientific method is deductive reasoning?
Test the hypothesis
What are the four parts of the fire tetrahedron?
Fuel (reducing agent)
Heat
Oxidizing agent
,Uninhibited chemical chain reaction
What kind of reaction absorbs energy, an endothermic or an exothermic reaction?
Endothermic
What is heat transfer by direct contact called?
Conduction
What is heat transfer by gas flow / air movement called?
Convection
What is heat transfer by microwave energy called?
Radiation
What is a fuel controlled fire?
A fire that is limited by the amount of combustibles.
What is a ventilation controlled fire?
A fire that is limited by the amount of oxygen.
What are the stages of fire growth?
Ignition
,Growth
Flashover
Fully Developed
Decay
What is a flashover?
The transition phase from growth to fully developed, where all surfaces reach ignition temperature
almost simultaneously.
What is ignition of the underside of the hot gas layer called?
Flameover or rollover
What factors influence flashover conditions?
Size of the compartment
Height of ceiling
Ventilation
Amount of fuel
Layout of fuel
Location of fire in the compartment
What are fire patterns?
The physical manifestation of the affects of fire on materials.
What are the different types of fire patterns on the walls and ceiling?
, Plume Generated patterns (often V shaped)
Ventilation generated patterns
Hot gas layer patterns (Line of demarcation)
What is spalling?
The separation of chunks of concrete with explosive force caused by the expansion of water (moisture)
trapped in the concrete as it turns to steam
What is char?
Pyrolized carbonaceous material
What is oxidation?
Physical change in appearance of a material resulting from the combination of oxygen.
What is alloying?
Mixing two metals heated then cooled to change their properties. Often melts at a lower temperature.
What is a clean burn?
When there was enough heat to burn away all carbon deposits (soot) on a surface leaving a "clean"
surface. Occurs on non-combustible surfaces.
What is soot?
Elemental carbon produced during incomplete combustion.
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