- Which of the following BEST describes what the fire tetrahedron represents?A.A transfer of sound energyB.The process of autoignitionC.An uninhibited chemical chain reactionD.The relationship between fuel, oxygen, heat
- What type of fuel can be the most dangerous of all the types?A.SolidB.LiquidC.GaseousD.Chemical
- What term defines the minimum concentration of fuel vapor and air that supports combustion?A.VaporizationB.Vapor pressureC.Lower flammable limitD.Upper flammable limit
- The neutral plane in the growth stage is the:A.beginning of rapid transition layers.B.point where thermal layering begins.C.opening in the hot and cool layers.D.interface of hot and cool layers at an opening.
- Damaged equipment marked for training can be used in:A. live fire training.B. any type of training.C. non-live fire training.D. training for the public, not for firefighters.
- Which of the following is defined as the tendency of gases to form into layers according to temperature?A.Type of fuelB.Thermal layeringC.Location of ignitionD.Location of fuel package
- Structural fire fighting protective clothing must meet what NFPA® standard?A. 1500B. 1971C. 1977D. 1982
- What term is used to describe the extent to which a substance will mix with water?A.SolubilityB.MixabilityC.VolatilityD.Reactivity
- What product of combustion is the most common product in structure fires?A.Toxic smokeB.Thermal energyC.Hydrogen cyanideD.Carbon monoxide
- What are the elements necessary to create fire in the model represented by the fire triangle?A.Fuel, oxygen, heatB.Heat, fuel, ignitionC.Passive agents and heatD.Oxygen and passive agents
- Which of the following represents the amount of energy that an object can release in the future?A.KineticB.ThermalC.PotentialD.Mechanical
- What type of reaction releases energy in the form of heat and sometimes light?A.KineticB.PotentialC.ExothermicD.Endothermic
- When a substance changes from one type of matter to another, it has had a:A.chemical shift.B.physical change.C.chemical reaction.D.physical alteration.
- The critical temperature for steel trusses is:A.300¡F (149¡C).B.500¡F (260¡C).C.900¡F (482¡C).D.1,000¡F (538¡C).
- What mode of combustion produces a smoldering glow in a materialÕs surface?A.KineticB.FlamingC.PotentialD.Nonflaming
- The energy possessed by a moving object is called:A.kinetic energy.B.thermal energy.C.potential energy.D.mechanical energy.
- What type of reaction absorbs energy as it occurs?A.KineticB.PotentialC.ExothermicD.Endothermic
- The process of ignition causes pyrolysis in solid fuels and ___ in liquid fuels.A.meltingB.freezingC.vaporizationD.kinetic reaction
- The potential chemical energy of fuel in fire behavior is converted to:A.sound energy.B.thermal energy.C.electrical energy.D.mechanical energy.
- In what mode of combustion is a visible flame produced?A.KineticB.FlamingC.PotentialD.Nonflaming