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35 Cards in this Set
- Front
- Back
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Fire is a rapid, self-sustaining _________ process, accompanied by the evolution of heat and light and varying intensities. a molecular b exothermic c oxidation d endothermic |
c oxidation |
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The fire triangle includes fuel, an oxidizer, and: A a chemical chain reaction B energy C molecules D free radicals |
B energy |
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Adding a fourth component, a chemical chain reaction, to the fire triangle creates which of the following models? A Fire tetrahedron B fire polygon C fire square D fire rectangle |
A fire tetrahedron |
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What are the basic components to the chemistry of fire? A Paper and wood B gasoline and a match C oxidizer and fuel D two sticks |
C oxidizer and fuel |
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What are substances that evolve or generate oxygen, either at ambient temperatures or when exposed to heat? A molecules B oxidizers C fuel D elements |
B oxidizers |
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What are the two most common element in fuels? A Carbon and oxygen B oxygen and hydrogen C carbon and hydrogen D carbon and nitrogen |
C carbon and hydrogen |
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Which of the following is not considered a state of matter or a fuel? A Solid B liquid C gas D combustion |
D combustion |
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Which process converts solid and liquid fuels to the gases state by the application of energy? A pyrolysis B evaporation C ignition D combustion |
A pyrolysis |
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At what temperature does fuel continue combustion without any external input of heat, becoming self-sustaining? A Fire temperature B ignition temperature C combustion temperature D melting temperature |
B ignition temperature |
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Which of the following is not a factor affecting the rate at which solid fuels are pyrolized? A Mass B arrangement C moisture content D overall cost |
D overall cost |
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Which of the following refers to the grouping of fuel over a prescribed area? A Mass B arrangement C moisture content D continuity |
D continuity |
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Which of the following can be absorbed by fuel and affects its ease of ignition? A Mass B arrangement C moisture content D continuity |
C moisture content |
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Which of the following refers to the ability of substance to mix with water? A Miscibility B specific gravity C volatility D vapor pressure |
A Miscibility |
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Which of the following refers to the weight of a liquid as compared to the weight of an equal volume of water? A Miscibility B specific gravity C volatility D vapor pressure |
B specific gravity |
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Which of the following refers to the ease with which a fuel gives off vapors at ambient temperature? A Boiling point B specific gravity C volatility D vapor pressure |
C volatility |
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what is the pressure exerted by a vapor molecules on the sides of a container at equilibrium? A Boiling point B specific gravity C volatility D vapor pressure |
D vapor pressure |
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When the vapor pressure equals atmospheric pressure at the surface of the liquid, what has been reached? A Boiling point B specific gravity C vapor density D flashpoint |
A Boiling point |
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The relative density of vapor or gas as compared to air is its; A boiling point B specific gravity C vapor density D flashpoint |
C vapor density |
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What is the minimum temperature of a liquid at which it gives off sufficient vapors to form an ignitable mixture with air, although ignition will not be sustained? A Boiling point B volatility C vapor density D flashpoint |
D flashpoint |
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Which of the following gas characteristics is maximum concentration of gas or vapor in the air above which is not possible to ignite vapors? A Upper flammable limit B flammable range C lower flammable limit D vapor density |
A Upper flammable limit |
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Which of the following gas characteristics is minimum concentration of gas or vapor in the air above which is not possible to ignite vapors?A Upper flammable limitB flammable rangeC lower flammable limit D vapor density |
C lower flammable limit |
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The portion of gas or vapor in air between the upper and lower flammable limits is called the: A upper flammable limit B flammable range C lower flammable limit D vapor density |
B flammable range |
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Which of the following possible sources of heat involves the breaking down in combination of molecules? A Chemical B mechanical C electrical D nuclear |
A chemical |
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Which of the following methods of heat transfer is the transfer of heat through a medium without visible motion? A Conduction B convection C radiation D direct contact |
A Conduction |
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The transfer of heat through a circulating medium, such as liquids or gases, is indicative of which of the following methods of heat transfer? A Conduction B convection C radiation D direct contact |
B convection |
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The transfer of heat by wavelengths of energy is which of the following methods of heat transfer? A Conduction B Convection C radiation D direct contact |
C radiation |
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which fire classification involves ordinary combustibles such as wood, paper, and cotton? A class a B class b C class d D class k |
A class a |
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Flammable and combustible liquids fall into which fire classification? A class a B class b C class c D class d |
B class b |
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which fire classification involves materials such as magnesium, titanium, zirconium, and potassium? A class b B class c C class d D class k |
C class d |
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which fire classification deals with energized electrical equipment? A class a B class d C class c D class k |
C class c |
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cooking materials such as cooking oils, fats, and grease fall into which fire classification? A class a B class d C class c D class k |
D class k |
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in which stage of fire does the fire reach a point at which it no longer needs input heat from outside sources to continue burning? A incipient B free burning C flash over D decay |
A incipient |
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In which stage of fire is heat released, bringing more fuel to ignition temperature? A incipient B free burning C flash over D decay |
B free burning |
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In which state of fire are all available fuels in the fire's perimeter burning? A incipient B free burning C flash over D decay |
C flash over |
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In which stage has the fire run out of available fuel or oxygen? A incipient B free burning C flash over D decay |
D decay |
