Fire Behavior 3

What type of reaction absorbs energy as it occurs?

• Kinetic

• Potential

• Exothermic

• Endothermic

The process of ignition causes pyrolysis in solid fuels and ___ in liquid fuels.

• melting

• freezing

• vaporization

• kinetic reaction

What are the elements necessary to create fire in the model represented by the fire triangle?

• Fuel, oxygen, heat

• Heat, fuel, ignition

• Passive agents and heat

• Oxygen and passive agents

What product of combustion causes the most fire deaths?

• Toxic smoke

• Thermal energy

• Carbon dioxide

• Hydrogen cyanide

Which of the following BEST describes why firefighters must use SCBA during overhaul?

• Smoke is not like other flammable gases; it will not burn or explode.

• Hazardous concentrations of smoke are only present outside the structure.

• Hazardous concentrations are typically below short-term exposure limits.

• Volume and density of smoke may be reduced, but the hazard is not eliminated.

Which of the following sources of energy is a form of oxidation?

• Sparking

• Self-heating

• Resistance heating

• Spontaneous ignition

What method of heat transfer occurs when a material is heated as the result of direct contact with a heat source?

• Potential

• Radiation

• Conduction

• Convection

What heat transfer method usually occurs through movement of hot smoke and fire gases?

• Potential

• Radiation

• Conduction

• Convection

Which of the following terms is the total amount of energy released when a specific amount of fuel is burned?

• Thermal energy

• Chemical energy

• Heat release rate

• Heat of combustion

Heat release rate is usually expressed in which of the following measurements?

• Kilowatts (kW)

• Kilojoules/gram (kJ/g)

• British thermal unit (Btu)

• Kilowatts per meter squared (kW/m2)