Fire investigator master for tcfp full test bank answered

Fire Investigator - e e




Master for TCFP Full TestBank e e e e e e




, Answered e




Is NFPA 921 a guide or a standard? -
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It is the Guide for Fire and ExplosionInvestigations
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What are the six steps of the scientific method? -
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Recognize the needDefine the problem
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Collect the data Anal e e e




yze the data Develop
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a hypothesisTest the h
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ypothesis

What step of the scientific method is inductive reasoning? -
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Analyze the data What step of the scientific method is deductive reasoning? -
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Test the hypothesisWhat are the four parts of the fire tetrahedron? -
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Fuel (reducing agent)
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Heat

Oxidizing agent e




Uninhibited chemical chain reaction e e e




What kind of reaction absorbs energy, an endothermic or an exothermic reaction? -
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Endothermic
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What is heat transfer by direct contact called? - Conduction
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,What is heat transfer by gas flow / air movement called? -
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ConvectionWhat is heat transfer by microwave energy called? -
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Radiation
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What is a fuel controlled fire? -
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A fire that is limited by the amount ofcombustibles.
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What is a ventilation controlled fire? -
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A fire that is limited by the amount ofoxygen.
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What are the stages of fire growth? -
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IgnitionGrowth
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Flashover

Fully Developed e e




Decay

What is a flashover? -
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The transition phase from growth to fully developed, whereall surfaces reach ignitio
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n temperature almost simultaneously.
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What is ignition of the underside of the hot gas layer called? -
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Flameover orrollover
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What factors influence flashover conditions? -
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Size of the compartmentHeight of ceiling
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Ventilation Am e




ount of fuele e

,Layout of fuel e e




Location of fire in the compartment e e e e e




What are fire patterns? -
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The physical manifestation of the affects of fire onmaterials.
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What are the different types of fire patterns on the walls and ceiling? -
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PlumeGenerated patterns (often V shaped)
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Ventilation generated patterns e e




Hot gas layer patterns (Line of demarcation)
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What is spalling? - e e e


The separation of chunks of concrete with explosive force caused by the expansion o
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f water (moisture) trapped in the concrete as it turns tosteam
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What is char? - Pyrolized carbonaceous material
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What is oxidation? - e e e


Physical change in appearance of a material resulting from thecombination of oxygen.
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What is alloying? - e e e


Mixing two metals heated then cooled to change theirproperties. Often melts
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at a lower temperature.
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What is a clean burn? - e e e e e


When there was enough heat to burn away all carbon deposits (soot) on a surface lea
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ving a "clean" surface. Occurs on non-combustiblesurfaces.
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What is soot? - Elemental carbon produced during incomplete combustion.
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What is calcination? - e e e


When chemically bound water is driven out of gypsum wallsby the heat of the fire.
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, Does a 25 Watt light bulb expand towards the fire or pull inward away from it? -
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eBulbs 25 watts or less pull away. Bulbs greater than 25 watts will expand towardsthe f
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ire.

What causes heat shadowing? - An object blocking the travel of radiated heat.
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What is a dead load? -
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The weight of things attached to the building, like flooring,cloumns, and roof coveri
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ngs.

What is a live load? -
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A load that can move, like people, furniture, wind, water, andsnow.
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What is compartmentation? -
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Design features of a building that limit fire growth tothe room of origin.
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What are the five building construction types? - Type I -
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Fire resistantType II - Non combustible
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Type III - e e




Ordinary Type IV -
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Heavy timberType V -
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Wood frame
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What is ordinary construction? - Exterior walls are masonry and frame is wood.
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What is wood frame construction? -
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Lightweight wood construction, used inapartments, houses.
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What is platform frame construction? - Each floor is a seperate platform.
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What is balloon frame construction? -
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The wall studs extend from the foundation tothe roof.
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