Fire Behavior Greensboro Fire Practice Exam

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• What is the term for heat generated by physical forces?
• What phenomenon occurs when all combustibles in a room ignite simultaneously?
• In the context of fire behavior, what is smoke velocity an indicator of?
• What type of heat is released during the decomposition of chemical compounds?
• What is the threshold for an atmosphere to be considered oxygen-rich?
• Which component is considered the primary oxidizing agent in the air?
• What is the effect of a thicker material on ignition temperature?
• What process releases energy by splitting the nucleus of an atom?
• What type of heating occurs when a wire is not insulated well enough to maintain the current?
• What term describes a condition where flames move through or across unburned gases during a fire's progression?
• Exposure to carbon monoxide at which level (in ppm) can cause death within 30 minutes?
• What does the lower flammable limit (LFL) indicate?
• Which term best describes heat generated by electrical current that creates an arc?
• What occurs during the process of thermal layering?
• Which class of fire is specifically associated with combustible metals?
• What is the term for heat released by the mixture of matter in a liquid?
• What percentage of atmospheric air is composed of nitrogen?
• What is the minimum temperature required for a liquid fuel to produce an ignitable vapor mixture with air called?
• At what temperature in Fahrenheit do we begin to feel pain on the skin?
• Which of the following is a characteristic of backdraft?
• In fire behavior, what is the term for ignition initiated by a chemical process inherent to the material?
• What method of fire extinguishment is referred to as "suffocation"?
• What term describes the percentage of a substance in air that will burn once it is ignited?
• What is heat defined as in fire behavior?
• Which material typically has the lowest density among those listed?
• What is required for combustion to occur after a fuel is converted into a gaseous state?
• What key component does not belong to the fire triangle?
• What condition occurs when oxygen is admitted into an area filled with unburned carbon particles and fire gases?
• Which of the following is an essential factor to assess when evaluating how smoke is changing during a fire?
• What is referred to as a buoyant column of flame and hot combustion products rising above the fuel source?
• What are finely divided carbon particles produced during combustion called?
• What is the typical oxygen content reduction percentage during the growth stage of a fire?
• What principle states that matter and energy may be converted, but there is never any net loss of total mass-energy?
• What is the ignition temperature of diesel?
• What is a characteristic of under-ventilated combustion?
• What must be true for combustion to occur?
• What factors affect ignition time in liquids?
• What can a spark or flame applied to a mixture below its ignition temperature lead to?
• What does the heat of combustion indicate?
• What is the flammable range of CO?
• What is the process called when fire spreads in air along surfaces or through solid materials?
• Which constituent of smoke acts as an asphyxiate due to its narcotic nature?
• What occurs during over-ventilated combustion?
• What does "black fire" indicate about the condition of the smoke present?
• In which units is temperature measured?
• Suspended hydrocarbons and water are categorized as what type of smoke component?
• What is the boiling point of gasoline?
• Solids have a definite ____ and ____, which can affect their ability to ____.
• What is the flammable range of natural gas?
• The efficiency of flame spread is affected by which of the following factors?
• Which of the following characteristics is associated with a smoke explosion?
• What condition must be avoided to prevent uncontrolled combustion?
• What is the ignition temperature of oak?
• What factor is NOT considered when predicting the movement of fire?
• Which type of heating is generated by passing an electrical force through a conductor?
• What is released during the complete oxidation of a substance?
• What are the primary components of fire gases?
• What is the typical vapor pressure range for gasoline?
• Which of the following gases is considered a major component of smoke?
• What happens to air intake during a smoke explosion?
• Which type of fuel is considered the most dangerous?
• What type of energy is transmitted from the sun in form of electromagnetic radiation?
• What is the term for heating resulting from the action of electrical force on non-conducting material?
• In heat transfer, what is the term for the movement of heat from a fluid to a solid surface?
• What happens when unburned gases combine with newly admitted oxygen in a backdraft situation?
• What term describes the visible luminous body of gases that is burning?
• What best describes when a fire transitions from the incipient stage to a larger and more active fire?
• Which of the following is NOT one of the three major components of smoke?
• What concentration of carbon monoxide (in ppm) is associated with a slight headache within two to three hours?
• What type of heat is produced by the forced reduction of a gaseous volume?
• Class A fires typically involve which type of materials?
• A material's ability to store energy is referred to as what?
• Which type of substances typically will not mix with water?
• Which heating results from movement between two objects in contact with each other?
• What happens to a fireman's perception of their role, according to Chief Croker?
• What term describes the minimum temperature needed for a fuel to start self-sustained combustion?
• How do hydrocarbons interact with water?
• What is the ignition temperature of a substance typically used as a fuel in vehicles?
• Which of the following class of fire involves flammable liquids?
• Which of the following is primarily responsible for the spread of fire?
• What type of explosion is characterized by a flame front advancing at less than the speed of sound?
• What is produced by an ideal air-to-fuel ratio in combustion?
• What do you call the pressure exerted by escaping vapor from a liquid?
• What term describes the degree of molecular activity of a material compared to a reference point?
• Which term describes heat occurring when electrical current is interrupted?
• What does vapor pressure indicate?
• What is the form of energy characterized by the vibration of molecules capable of initiating chemical changes?
• What percentage of atmospheric air consists of gases other than oxygen or nitrogen?
• Which element is commonly associated with producing toxic smoke in fires?
• What term describes an effective force on fluid due to density or temperature differences in a gravitational field?
• What is defined as the temperature at which a liquid converts to gas at vapor pressure equal to atmospheric pressure?
• What kind of situations typically result in the formation of black smoke?
• What happens to a flame when the oxygen concentration is 14% or less?
• Heat causes harm by which two types of heat transfer?
• What is the normal body temperature in Fahrenheit?
• As smoke rises, what does it help indicate to firefighters?
• What term describes the formation of a chemical bond between oxygen and another element?
• Which of the following best describes a wind-driven fire?
• In which stage does available fuel become consumed, leading to a fuel controlled fire?
• What happens to energy when there is a reduction in the mass of fuel?
• What is the name of the process by which energy is released when two nuclei join together?
• What is the term for materials that yield oxygen or gases during a chemical reaction but are not combustible by themselves?
• What is an important characteristic of gaseous fuels in fire behavior?
• What is the process called when heat is conducted from one body to another by molecular energy transfer?
• What term describes the ability of a substance to mix with water?
• Which byproduct is most commonly produced during smoldering?
• What is the gas stream that flows from the fire that continues to mix air without further chemical reactions?
• Which gas is NOT commonly found in smoke?
• What property is inversely proportional to temperature in gases, leading to an upward force on the hot gases?
• What process must liquid fuels undergo to ignite?
• What is a key attribute of chemical flame inhibition in fire extinguishment?
• Which of the following components can determine the stage of a fire?
• What is the term for the ratio of the weight of a given volume of a liquid compared with the weight of an equal volume of water?
• What is the process of air or gases being drawn into a fire called?
• How many stages are there in the development of fire?
• What occurs when flames encounter excess air?
• What is the boiling point range of kerosene?
• What term describes the density of gases in relation to air?
• What is the specific gravity of water?
• Which type of ignition is not initiated by an external source?
• What stage of fire development occurs after the fully developed stage?
• In fire development, what follows the growth stage?
• What type of heat is released as an arc occurs between oppositely charged surfaces?
• Which of the following attributes refers to the mass or heaviness of smoke particles?
• Which measurement unit corresponds to heat energy?
• What is the flash point of gasoline?
• Surface tension will be insufficient in which type of fire?
• What is one of the warning signs of a rollover?
• What stage occurs when all combustible materials are involved in the fire?
• What does the upper flammable limit (UFL) refer to?
• Which of the following is NOT a characteristic of combustion?
• Smoke velocity helps to suggest what aspect of a fire situation?
• Heat stress and altered mental status occur when the body's core temperature reaches which Fahrenheit degree?
• What is the significance of the term 'self-sustaining chemical reaction' in the context of combustion?
• Which element is involved in oxidation processes?
• What percent of oxygen is typically found in atmospheric air?
• Which material is noted to have the highest ignition temperature among the following?
• How does fuel typically change state during the combustion process?
• What does radiation refer to in heat transfer?
• What percentage of oxygen is required for combustion to occur?
• What is the general effect of reduced oxygen levels on combustion?
• What element is released during the combustion of fuel besides light?
• Which of the following is an example of irritant gases (acid gases)?
• What type of smoke component do carbon monoxide and other harmful substances represent?
• Reading smoke enables the firefighter to determine which of the following?
• What signifies that an area is approaching a flashover condition?
• How is heat energy measured?
• What type of energy is considered to be released during combustion reactions?
• What does smoldering primarily produce?
• What is the flammable range of propane?
• What type of smoke is typically produced by solid materials when they are first ignited due to moisture content in the smoke?
• What happens to the buoyant force when a hot plume of gases cools to the surrounding air temperature?
• What is the ignition temperature of pine?
• Which type of explosion is characterized by a flame front and pressure wave that advance through the material at a rate that exceeds the speed of sound?
• Which heating occurs due to the electrical resistance in a conductor?
• What role does heat play in relation to fire hazards?
• What factors are directly related to self-heating?
• What is an essential component for the process of combustion?
• What is the typical room temperature in Fahrenheit where combustion can occur?
• During which stage does the fire plume develop and begin to entrain air?
• Which of the following is a characteristic of a rollover?
• 1 calorie is equivalent to how many joules?
• What describes the surface area of material in relation to its mass?
• What is the conversion of a liquid into the gaseous state through the action of heat?
• What is the primary characteristic of heat energy?
• What does HRR stand for in fire behavior terminology?
• What is the primary source of heat in combustion reactions?
• Which substances are known to typically mix with water?
• What is the fully developed stage in fire development characterized by?
• In the burning process, what must be achieved in terms of the fuel/air mixture?
• The physical disposition of material is characterized as either ____ or ____.
• Which type of fire extinguisher is most suitable for Class D fires?
• What is the term for the chemical decomposition of a substance through the action of heat?
• Which attribute of smoke indicates the amount of fuel being converted to a gas?
• During the decay stage, what typically happens to the fire?
• What is the ignition temperature of kerosene?
• Which term describes the energy released from the nucleus of an atom?
• In the context of fire behavior, how many sides does the fire tetrahedron have?
• According to the law of heat flow, where does heat tend to flow?
• What type of gases can induce pain to the eyes and respiratory tract?
• In terms of fire dynamics, what does “flow path” refer to?
• Which property of a liquid is measured by its volatility?
• Which of the following indicates a rapid buildup of heat in a room?
• What does smoke color primarily help to identify in a fire scenario?
• If a liquid has a specific gravity greater than 1, what happens when it is placed in water?
• Which of the following represents an essential ingredient of combustion in the fire tetrahedron?
• What is the heating resulting from external physical forces called?
• What does the presence of moisture in smoke typically produce?
• Which of the following is NOT associated with rollover characteristics?
• What do liquids need to ignite aside from being within a certain temperature range?
• Class K fires are primarily related to what type of materials?
• What adverse effect occurs at a carbon monoxide exposure level of 400 ppm?
• Which method of fire extinguishment involves reducing temperature to prevent vapor creation?
• Which classification of fuel presents the greatest risk for fires?
• In the context of fire behavior, what does a lower flash point indicate?
• If a product has a vapor density greater than 1, what will it do?
• How does the flammable range affect a substance's potential for combustion?
• What factor makes it easier for a solid to absorb heat and ignite?
• What is an example of an instantaneous explosion?
• What is a significant characteristic of fires at the decay stage?
• What is combustion defined as?
• Which fire stage does not contain an active fire but shows signs of combustion?
• Which factor is crucial for combustion to sustain after ignition?
• What is the minimum temperature that black smoke can indicate during a fire?
• Which smoke attribute helps to determine what materials are burning and the stage of fire?
• What does smoke density indicate about the smoke itself?
• What does the fire triangle illustrate as essential for fire?
• What is the danger of being within the flammable/explosive range of a substance?
• What is the result of heat released due to the mixing of different matters in liquids?
• What is referred to as the force within a liquid's surface?
• What is the primary characteristic of a Class C fire?
• What describes the tendency of gases to stratify according to their temperature?
• What is the equivalent of 1 BTU in joules?
• What is the first stage of a fire when combustion begins and the fire is generally small and confined?
• What type of heat is caused by applying electrical energy to matter?
• Which of the following gases are classified as narcotic gases?
• How is Heat Release Rate (HRR) typically measured?
• What is the vapor point of kerosene?
• Which of the following is not one of the three states of matter in which fuel may be found?
• Which statement describes the effect of carbon monoxide at exposure levels of 6400 ppm?
• Carbon, soot, dust, and fibers are all examples of which component of smoke?
• What type of ignition occurs due to a hot spot, spark, or small flame?
• What is the lower explosive limit (LEL) in relation to igniting liquids?
• What phenomenon occurs when a material increases in temperature without an external heat source?
• Which material has the lowest ignition temperature among the following?
• What is a sign that a backdraft may happen during a fire?
• Vaporization of a liquid requires ____ energy input than pyrolysis of a solid fuel.
• What happens when a substance has a specific gravity less than 1?
• What term is used to describe the movement of heat and smoke from high to low pressure areas?
• What is the flammable range of gasoline?
• What benefit does vertical ventilation provide in a fire scenario?
• Which component is essential for sustaining a fire once it has started?
• What do flames emerging from doors and windows indicate in a fire scenario?
• What is the primary ambition expressed by Chief Croker?
• How does lower surface tension affect flame spread across a surface?
• What is the flash point range of kerosene?
• What is the flammable range of acetylene?
• What do we call the first stage of fire development where ignition occurs?
• At what percent of oxygen will combustion cease?
• What is the flammable range of kerosene?
• What is indicated by a high smoke volume during a fire event?
• What is the temperature range typically associated with the flashover stage of a fire?
• What is the main cause of fire-related deaths, which should be considered toxic?
• What process must solid fuels undergo to become a gas?
• What occurs during the process of auto ignition?
• Which is true about the flash point of a liquid?
• What type of heat occurs when there is a physical interaction without the need for electrical input?
• At what temperature will a liquid produce sufficient vapors to support continuous combustion once ignited?
• What type of heat energy results from changes in the chemical makeup of materials during combustion?
• If a product has a vapor density less than 1, what will it do?
• Which factor is crucial for assessing the behavior of fuel during fire scenarios?
• What is the ignition temperature of pine?
• A state of induced sleep that reduces the capacity to escape is caused by what type of gases?
• What term describes the heat flow rate per unit area of the flow path?
• Which of the following best defines the term "heat release rate"?
• What is the measurement of energy required to heat 1 pound of water from 39°F to 40°F?
• Which of the following is considered a polar solvent?
• What term refers to the ease with which liquids give off vapors?
• What is the vapor density of air?
• Which term describes the ability to transfer heat through a material?
• What does the rate of entrainment influence regarding flame behavior?