ques ons for TCFP Fire Inves gator With complete
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Is NFPA 921 a guide or a standard? - CORRECT ANSWERS It is the Guide for Fire and Explosion
Inves%ga%ons
What are the six steps of the scien%fic method? - CORRECT ANSWERS Recognize the need
Define the problem
Collect the data
Analyze the data
Develop a hypothesis
Test the hypothesis
What step of the scien%fic method is induc%ve reasoning? - CORRECT ANSWERS Analyze the
data
What step of the scien%fic method is deduc%ve reasoning? - CORRECT ANSWERS Test the
hypothesis
What are the four parts of the fire tetrahedron? - CORRECT ANSWERS Fuel (reducing agent)
Heat
Oxidizing agent
Uninhibited chemical chain reac%on
What kind of reac%on absorbs energy, an endothermic or an exothermic reac%on? - CORRECT
ANSWERS Endothermic
,What is heat transfer by direct contact called? - CORRECT ANSWERS Conduc%on
What is heat transfer by gas flow / air movement called? - CORRECT ANSWERS Convec%on
What is heat transfer by microwave energy called? - CORRECT ANSWERS Radia%on
What is a fuel controlled fire? - CORRECT ANSWERS A fire that is limited by the amount of
combus%bles.
What is a ven%la%on controlled fire? - CORRECT ANSWERS A fire that is limited by the amount
of oxygen.
What are the stages of fire growth? - CORRECT ANSWERS Igni%on
Growth
Flashover
Fully Developed
Decay
What is a flashover? - CORRECT ANSWERS The transi%on phase from growth to fully
developed, where all surfaces reach igni%on temperature almost simultaneously.
What is igni%on of the underside of the hot gas layer called? - CORRECT ANSWERS Flameover
or rollover
What factors influence flashover condi%ons? - CORRECT ANSWERS Size of the compartment
Height of ceiling
,Ven%la%on
Amount of fuel
Layout of fuel
Loca%on of fire in the compartment
What are fire pa9erns? - CORRECT ANSWERS The physical manifesta%on of the affects of fire
on materials.
What are the different types of fire pa9erns on the walls and ceiling? - CORRECT ANSWERS
Plume Generated pa9erns (o;en V shaped)
Ven%la%on generated pa9erns
Hot gas layer pa9erns (Line of demarca%on)
What is spalling? - CORRECT ANSWERS The separa%on 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? - CORRECT ANSWERS Pyrolized carbonaceous material
What is oxida%on? - CORRECT ANSWERS Physical change in appearance of a material resul%ng
from the combina%on of oxygen.
What is alloying? - CORRECT ANSWERS Mixing two metals heated then cooled to change their
proper%es. O;en melts at a lower temperature.
What is a clean burn? - CORRECT ANSWERS When there was enough heat to burn away all
carbon deposits (soot) on a surface leaving a "clean" surface. Occurs on non-combus%ble
surfaces.
, What is soot? - CORRECT ANSWERS Elemental carbon produced during incomplete
combus%on.
What is calcina%on? - CORRECT ANSWERS When chemically bound water is driven out of
gypsum walls by the heat of the fire.
Does a 25 Wa9 light bulb expand towards the fire or pull inward away from it? - CORRECT
ANSWERS Bulbs 25 wa9s or less pull away. Bulbs greater than 25 wa9s will expand towards the
fire.
What causes heat shadowing? - CORRECT ANSWERS An object blocking the travel of radiated
heat.
What is a dead load? - CORRECT ANSWERS The weight of things a9ached to the building, like
flooring, cloumns, and roof coverings.
What is a live load? - CORRECT ANSWERS A load that can move, like people, furniture, wind,
water, and snow.
What is compartmenta%on? - CORRECT ANSWERS Design features of a building that limit fire
growth to the room of origin.
What are the five building construc%on types? - CORRECT ANSWERS Type I - Fire resistant
Type II - Non combus%ble
Type III - Ordinary
Type IV - Heavy %mber
Type V - Wood frame