Essentials of Fire Fighting 7th Edition: Chapter
4, Fire Dynamics Which element is included in the fire tetrahedron that is not part of the fire triangle model? - ANSWER Chemical chain reaction In order to burn, fuel must be in a _____ state. - ANSWER Gaseous Which statement about smoke is accurate? - ANSWER Smoke has the potential to burn.Which is a measure of heat energy transfer rate? - ANSWER Heat Flux
Heat transfers from one body to another by three mechanisms: conduction,
radiation, and: - ANSWER Convection 1 / 3
A fuel's _____ is the total amount of thermal energy released when a specific amount of that fuel burns. - ANSWER heat of combustion Which type of fuel is difficult to extinguish using water as the only extinguishing agent? - ANSWER Liquids that are less dense (lighter) than water What is the primary consideration affecting how easily solid fuels ignite? - ANSWER Surface to mass ratio What is the primary oxidizing agent in most fires? - ANSWER Oxygen in the air The range of concentrations of fuel vapor and air within which combustion can occur is the: - ANSWER flammable (explosive) range.Which is an example of a self-sustaining chemical reaction? - ANSWER Flaming combustion 2 / 3
The four stages of fire development are: - ANSWER
incipient, growth, fully developed, decay Which stage of fire occurs when all combustible materials in the compartment are burning at their peak heat release rate based on the available oxygen? - ANSWER Fully developed
Development of a fire in the incipient stage depends largely upon the: -
ANSWER characteristics and configuration of the fuel involved.If there are no openings for lateral movement during the growth stage of a fire, the
hot gases released during combustion will fill the compartment: - ANSWER
starting at the ceiling and filling down.
Most residential fires that develop beyond the incipient state become: -
ANSWER ventilation limited.When a compartment fire is in ventilation-limited decay, _____ can trigger flashover quickly. - ANSWER introduction of new oxygen
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