Fire Investigator - master for TCFP Test: Fire Investigator -Master for TCFP Test Bank: Questions & Answers: Latest Updated

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Is NFPA 921 a guide or a standard? (Ans- It is the Guide for Fire and Explosion Investigations What are the six steps of the scientific method? (Ans- Recognize the need Define the problem C... ollect the data Analyze the data Develop a hypothesis Test the hypothesis What step of the scientific method is inductive reasoning? (Ans- Analyze the data What step of the scientific method is deductive reasoning? (Ans- Test the hypothesis What are the four parts of the fire tetrahedron? (Ans- Fuel (reducing agent) Heat Oxidizing agent Uninhibited chemical chain reaction What kind of reaction absorbs energy, an endothermic or an exothermic reaction? (Ans- Endothermic What is heat transfer by direct contact called? (Ans- Conduction What is heat transfer by gas flow / air movement called? (Ans- Convection What is heat transfer by microwave energy called? (Ans- Radiation What is a fuel controlled fire? (Ans- A fire that is limited by the amount of combustibles. What is a ventilation controlled fire? (Ans- A fire that is limited by the amount of oxygen. What are the stages of fire growth? (Ans- Ignition Growth Flashover Fully Developed Decay What is a flashover? (Ans- 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? (Ans- Flameover or rollover What factors influence flashover conditions? (Ans- Size of the compartment Height of ceiling Ventilation Amount of fuel Layout of fuel Location of fire in the compartment What are fire patterns? (Ans- The physical manifestation of the affects of fire on materials. What are the different types of fire patterns on the walls and ceiling? (Ans- Plume Generated patterns (often V shaped) Ventilation generated patterns Hot gas layer patterns (Line of demarcation) What is spalling? (Ans- 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? (Ans- Pyrolized carbonaceous material What is oxidation? (Ans- Physical change in appearance of a material resulting from the combination of oxygen. What is alloying? (Ans- Mixing two metals heated then cooled to change their properties. Often melts at a lower temperature. What is a clean burn? (Ans- 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? (Ans- Elemental carbon produced during incomplete combustion. What is calcination? (Ans- 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? (Ans- Bulbs 25 watts or less pull away. Bulbs greater than 25 watts will expand towards the fire. What causes heat shadowing? (Ans- An object blocking the travel of radiated heat. What is a dead load? (Ans- The weight of things attached to the building, like flooring, cloumns, and roof coverings. What is a live load? (Ans- A load that can move, like people, furniture, wind, water, and snow. What is compartmentation? (Ans- Design features of a building that limit fire growth to the room of origin. What are the five building construction types? (Ans- Type I - Fire resistant Type II - Non combustible Type III - Ordinary Type IV - Heavy timber Type V - Wood frame What is ordinary construction? (Ans- Exterior walls are masonry and frame is wood. What is wood frame construction? (Ans- Lightweight wood construction, used in apartments, houses. What is platform frame construction? (Ans- Each floor is a seperate platform. What is balloon frame construction? (Ans- The wall studs extend from the foundation to the roof. What is Ohm's Law? (Ans- V=IR (E = I x R) What is voltage? (Ans- Pressure What is current? (Ans- Flow What is resistance? (Ans- Friction, opposition to the flow What is an overload? (Ans- Power needs exceed the circuit's capacity. [Show More]

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