Fire Investigator - Master for TCFP Test
Exam Questions and Verified 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
1|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,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
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©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,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.
3|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, 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.
What is calcination? - ✔✔When chemically bound water is driven out of gypsum
walls by the heat of the fire.
Does a 25 Watt light bulb expand towards the fire or pull inward away from it? -
✔✔Bulbs 25 watts or less pull away. Bulbs greater than 25 watts will expand
towards the fire.
What causes heat shadowing? - ✔✔An object blocking the travel of radiated
heat.
What is a dead load? - ✔✔The weight of things attached to the building, like
flooring, cloumns, and roof coverings.
What is a live load? - ✔✔A load that can move, like people, furniture, wind,
water, and snow.
4|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
Exam Questions and Verified 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
1|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,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
2|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,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.
3|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, 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.
What is calcination? - ✔✔When chemically bound water is driven out of gypsum
walls by the heat of the fire.
Does a 25 Watt light bulb expand towards the fire or pull inward away from it? -
✔✔Bulbs 25 watts or less pull away. Bulbs greater than 25 watts will expand
towards the fire.
What causes heat shadowing? - ✔✔An object blocking the travel of radiated
heat.
What is a dead load? - ✔✔The weight of things attached to the building, like
flooring, cloumns, and roof coverings.
What is a live load? - ✔✔A load that can move, like people, furniture, wind,
water, and snow.
4|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
