IAAI Certified Fire Investigator (CFI) Practice Test

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• Which building design feature aims to limit fire to its origin by containing it within compartments?
• This should be donned when dealing with hazardous chemicals.
• The process whereby a material increases in temperature without drawing heat from its surroundings.
• Which component in heat-producing appliances melts a pellet to turn off the unit when overheated?
• Thermal conductivity, density, and heat capacity are the three components of WHAT?
• What type of fire dynamics analysis model divides a room into many cells, enabling detailed computation of fluid movement?
• Which of the following is NOT considered a competent ignition source?
• Which term describes the boundary lines marking the edge of a fire pattern?
• The term associated with the air and gas flow in a compartment fire is
• Which factor in fire incidents causes more fatalities than flames?
• To submit a proposal to the NFPA 921 Committee, forms are available from the
• Which fire scenario is most likely to produce higher CO and soot due to limited ventilation?
• All voltages are _______, which means that a battery or DC generator creates a potential difference that can force charge through a wire.
• Which condition does NOT cause a cherry-pink coloration to the skin of a fire victim and is NOT visible on all skin types?
• The shattering type of explosion damage.
• Which of the following is a plausible cause of engine compartment fires on boats?
• In a vehicle fire, once a fuel is ignited, any additional fuels contained in the vehicle have significant effect on WHAT fire factor?
• In industrial-type buildings, which construction type is principally used?
• Which process occurs when heat alone causes material to break down without oxidation?
• Which phenomenon will occur in a compartment with a low ceiling and fire on the floor before the same fire in a room with high ceilings?
• The radiant heat flux from the gas layer to the floor that indicates flashover onset is measured as how many W per cm2?
• A chemical reaction that combines a substance with oxygen is known as what?
• Which term describes a chemical process of oxidation releasing heat and light?
• In criminal proceedings, which standard must be satisfied to convict?
• What term describes a catastrophic explosion caused by the rupture of a vessel containing a pressurized liquid when the vapor expands rapidly?
• Which term is used to describe the scene type where fire analysis must consider that evidence may still exist even if some materials are destroyed?
• A burn pattern analysis that is more useful for evaluating fire spread, rather than length or intensity of burning is called what?
• Which activity is typically performed outside the fire scene perimeter to replenish a fuel supply on a vehicle or equipment?
• These types of constructions or vehicles are similar in many ways to fires in houses and mobile homes.
• These can occur simultaneously and involve separate and independent examinations through which each party may develop an independent hypothesis.
• As WHAT increases, determining the pattern at the point of origin becomes more difficult?
• An investigator should notify this person(s) upon finding an incendiary device that has not activated
• The fire characteristic that most affects fire growth during the pre-flashover phase.
• Which color on the NFPA 704 placard represents instability?
• What is the upper explosive limit of methane?
• Which option correctly identifies the two-step approach to obtaining the appliance's identifying data in the area of origin?
• The concluding interpretation of a fire investigation is referred to as what?
• In high-pressure fuel-injected vehicles, what is the typical range of pressure used to pump fuel from a fuel tank?
• A protective device that motors are generally equipped with in a counter-top appliance, which may reset when the motor cools.
• Which home item is cited as having a peak HRR in the 3000-5000 kW range?
• This may occur when the vapor pressure of a liquid exceeds atmospheric pressure.
• Which valve type is commonly used to control water flow to a fire sprinkler system and is opened when the stem is up?
• What term describes any substance that can undergo combustion?
• Which construction type is noncombustible, built with steel and concrete, but with little to no fire resistance?
• In distinguishing between Ordinary and Frame construction, which element is most affected?
• A deflagration resulting from the sudden introduction of air into a confined space containing oxygen-deficient products of incomplete combustion?
• In fire testing or modeling, which term describes the air movement that must be considered for accurate results?
• The most reliable type of sprinkler system.
• In wildland fire assessment, which characteristic is indicated by the degree of damage to fuels?
• The starter motor draws its energy from this source.
• What is the best term for the standard plan that guides evidence handling in investigations?
• What does NFPA 921 primarily provide for fire investigators?
• What term refers to the borders or boundaries of fire patterns?
• A type of scene or circumstances, in which fires do NOT always destroy all physical evidence.
• Geographic area, clusters, temporal frequency, and materials and methods are useful in identifying and establishing which act?
• Which component of the human body acts as a fuel to sustain a flame?
• Which technique is commonly used to document the sequence of events during a fire scene examination?
• Which material is NOT acceptable for exterior use but acceptable for interior use?
• What does fire often cause standard copper conductors to do?
• Which concept does NOT mean that an item of evidence cannot be removed from the fire scene to preserve it?
• Which term specifically describes the ratio of the average molecular weight of a gas or vapor to the average molecular weight of air?
• The onset of flashover occurs when the temperature in the upper gas layer reaches which value?
• This is a fire effect to furniture that does NOT provide investigators with clues concerning the ignition source, but can show fire spread and intensity
• Using the formula Watts = Amps × Volts, what wattage does a device draw if it uses 12.5 A on a 120 V circuit?
• What term describes the interface that can form when there is a poor electrical connection?
• Which concept should not be included in a summary report of findings?
• Which term refers to observable effects of fire on materials such as charring or glazing?
• Copper melts at approximately which temperature in °F?
• Which person can grant permission for a fire investigator to enter a scene before the fire is completely extinguished?
• Which color is not part of the sprinkler head temperature color coding (orange to black)?
• Which is a type of analysis used to predict fire phenomena and environmental characteristics?
• Which term describes the post-mortem condition in which muscles contract due to heat exposure?
• What is the ignition temperature of power steering fluid?
• What does TCO stand for in electrical safety?
• Electrical condition caused by a loose connection and oxide interface—what heating results?
• Which equation expresses electrical power in terms of voltage and current?
• What term describes any person, entity, or organization with obligations or whose rights or interests might be affected by the investigation of a specific incident?
• Evidence of smoke or soot in the lungs, bronchi, and trachea is one of the most significant factors in confirming that, at the time of the fire, the victim was WHAT?
• What is an immediate concern to the fire investigator regarding the structure?
• A boat device that owners fail to keep clean, which is a frequent cause of engine compartment fires on boats?
• The fire phenomenon responsible for much of the physical evidence used by fire investigators.
• The position on a receptacle, where the cord's wider prong is forced to plug into, due to a change that was made to 20-amp cords in 1987
• Which statement best describes the reasoning that is based on empirical data, training, and experience?
• In arson investigations, which substance is often targeted because it can be recovered from materials such as concrete floors and is an ignitable liquid?
• Recreating pre-fire positions of contents is also known as what?
• Which device on a structure's electrical system is located where service enters the building and is connected to the exterior conduit?
• Which option best describes the reasoning used to test a hypothesis by deriving conclusions from general principles?
• Which term denotes the energy release pattern that can cause explosive damage?
• What is the term for a team comprised of a homicide detective, medical examiner, and fire investigator?
• In which setting do dust explosions most often occur, as dust accumulates in confined areas?
• These three, Trust, Caution, and Distrust, are types of what in investigative interviewing?
• In a typical gasoline-powered vehicle, which sequence correctly lists the components of the fuel system?
• This is the difference between wildfire V-patterns and compartment fire V-patterns.
• The ordinary sustained burning mode in most fires is called what?
• Engine Oil Analysis can determine what about a vehicle?
• This investigative determination is based on witness information, fire patterns, arc mapping, and fire dynamics.
• What document protects confidential, trade secret, and propriety information during a fire investigation?
• Any substance that can undergo combustion is called what?
• A professional description that describes the specific job task, lists items necessary to complete the task, and describes measurable outcomes and evaluations for the task is called what?
• Which will create more damage in an explosion: the Upper or Lower Explosive Limit?
• The chemical and physical changes that occur in gypsum wallboard surfaces during a fire.
• The practice of evidence collection and documentation is equally important in which investigations?
• Where should firefighters re-fuel all gas-powered equipment away from the fire scene?
• What term describes the condition that occurs when there is a poor electrical connection?
• Who coordinates entry and safety at a fire scene and can grant investigators access while the fire is still active?
• Which term is used for the points in a circuit where conductors meet and where overheating risk is highest?
• What is the upper explosive limit of natural gas (methane)?
• Which term describes the fire plume behavior where hot gases travel along the ceiling before spreading?
• The heat energy that brings about ignition.
• The type of pipeline used to convey natural gas from the storage or production facilities to local utilities
• The failure of one of these types of construction features can affect adjacent members of a similar type.
• Which type of pipeline conveys natural gas from storage or production facilities to local utilities?
• The importance of this fire investigative practice is no different in wildfire investigations, compared to structural fires. Which practice is described?
• A protective device in motors that may reset after cooling
• Which construction type is Ordinary construction with masonry or noncombustible exterior walls?
• If the fire origin is clearly defined, the cause can be determined even without which element?
• NFPA 921 is published on a revision cycle of how many years?
• Biological, chemical, physical, and radiological are examples of this concept that fire investigators should be aware of when investigating a fire scene.
• The blast scene perimeter distance is recommended to be how many times the distance to the furthest debris?
• These construction features are tested for fire spread from below, but NOT from above.
• What law governs marine fire investigations?
• Biological, chemical, physical, and radiological are examples of what concept fire investigators should be aware of at a fire scene?
• A meaningful analysis of a fire requires understanding of fire growth, the total heat released, and what?
• Consensus agreement between interested parties should be developed prior to the commencement of WHAT?
• The ignition temperature of power steering fluid is closest to which temperature?
• Latent Heat of Vaporization refers to the heat absorbed during which change?
• The component that controls temperature in many heat-producing appliances.
• Which material is NOT commonly subject to self-heating?
• Which type of reasoning moves from general premises to a specific conclusion?
• What type of evidence consists of tangible items?
• Which best describes the white quadrant on the NFPA 704 placard?
• The rate of fire growth, as determined by witnesses, is considered highly subjective.
• Which fuel item has the greatest peak heat release rate in unconfined burning?
• In a wildland fire, which fire characteristic is indicated by the degree of damage to the wildland fuel?
• Which term is used to describe the ratio of the average molecular weight of a gas or vapor to the average molecular weight of air?
• Which construction type corresponds to Heavy timber or mill construction?
• What is the lower explosive limit of methane?
• A law that may govern the fire investigation of a boat is what?
• Combustible materials should be kept 18 inches away from this fire protection device.
• During a major investigation involving multiple tenants, which measure should NOT be allowed until the area has been examined and safety concerns addressed?
• Which type of photography is helpful in understanding the relationship of a small subject to its relative position in a larger area?
• What term describes the rate at which energy is used?
• To validate a canine alert sample, which laboratory process is required?
• When the fire plume reaches the ceiling and moves laterally along the ceiling, this is known as?
• Which ignition source requires heat transfer from an electrical source to maintain until the adjacent fuel ignition temperature?
• Which fire phenomenon is not really a consideration for wildfires?
• To tell if a hole in a horizontal surface was burned from above or below, examiners look for WHAT?
• What term describes the act of electrically joining conductive objects to establish a common electrical potential?
• A material with a flame spread index of 0-25 falls into which class?
• A key method used by investigators when an appliance is determined to be in the area of origin, particularly the positioning of all controls and components.
• What is the post-mortem response of the body to heat, characterized by contraction of muscles?
• The NFPA standard for hazard identification
• Which statement is true regarding the relationship between wildfires and the phenomenon of flashover?
• By taking these two steps, an investigator can obtain the manufacturer's name, model & serial numbers, manufacture date, and any warnings on an appliance, determined to be in the area of fire origin.
• Which category of fire is strongly indicated by the confirmation of multiple fires?
• What is the flash point of power steering fluid?
• Ignition that involves transferring sufficient heat to a fuel by passage of electrical current to ignite material that is closeby is called what?
• Engine Oil Analysis is used to determine which of the following?
• Materials that can react with each other are known as which category?
• Which of the following best describes a liquid with a flash point above 100°F?
• What is the primary purpose of the Freedom of Information Act in the context of fire investigations?
• Which lightning occurrence is less likely to cause a fire compared with cloud-to-ground?
• What are the flame spread categories and their index ranges?
• Which term describes a fire pattern that is not necessarily an indicator of the presence of an ignitable liquid?
• Fire patterns commonly created when a vertical flame plume does not reach the ceiling are called what?
• Which term describes a material that increases in temperature due to exothermic reactions with the surrounding atmosphere?
• What is the most common open-flame ignition source in non-fuel injected vehicles?
• The fire scene itself needs to be considered as WHAT?
• In the typical fuel system sequence, which component directly precedes the fuel injector or carburetor?
• Which device interrupts electrical arc faults?
• What is the recommended perimeter distance for securing a blast scene relative to the furthest debris?
• Which term describes the rate at which a material's surface temperature rises when exposed to heat?
• The person at a fire scene who manages various aspects of the evidence collection process, including an evidence log and evidence bagging, tagging, preservation and storage is called what?
• Which term describes the study used to forecast fire behavior and environmental interactions?
• Complicated patterns in glass.
• Fuel-air mixtures at or near the lower explosive limit (LEL) do NOT always produce less ________ than those near the upper explosive limit (UEL).
• Most engine fires typically penetrate the interior compartment at this location of the vehicle.
• What is the measure of the rate of heat transfer to a surface?
• A type of fire dynamics analysis model that divides each room into two or more spaces.
• Which term refers to the body formed by selecting one representative from each investigative party?
• Which concept governs entry into a fire scene when exigent circumstances, warrants, or consent may apply?
• Which condition is among the most dangerous when examining a boat that is afloat after a fire?
• Which photography type is used to show the position of a small subject within a larger context?
• Which gas is commonly encountered as a narcotic exposure in a fire?
• What does OS&Y stand for in valve terminology?
• NFPA 921 is this type of document.
• A liquid with a flash point below 100°F is classified as
• Which interior-use material is not suitable for exterior use?
• What type of heating results from the passage of an electrical current through a conductor?
• Deductive reasoning is generally more confident than inductive reasoning. Which type of reasoning is generally less certain?
• What is the melting temperature of aluminum?
• Which type of evidence is typically in written or recorded form, such as reports?
• An explosion caused by a combination of combustible materials heated to the ignition point and a sudden introduction of oxygen to support combustion?
• In a post-suppression assessment, which activity identifies and controls remaining hotspots?
• This feature distinguishes the heat-sensitive bulbs of sprinkler heads from each other
• An investigator can closely examine this component of a cord to determine if it was plugged into a receptacle.
• The burden of proof in a criminal trial.
• Which type of burning occurs in the early stages of a compartment fire?
• Which law allows fire investigators to gain information in most states?
• Which of the following is the expansion for the acronym AFCI, with the 'A' representing the concept described?
• A phenomenon that does NOT occur to human bodies (not supported by evidence)?
• In fire analysis, what is the term for the total quantity of combustible contents of a building, space, or fire area expressed in heat units or the equivalent weight in wood?
• A type of fire that produces more carbon monoxide and more soot than fuel-controlled fires.
• Which material heats up the quickest under radiant flux: Oak Boards, Concrete Wall, Gypsum Plaster, or Rigid Polystyrene Panels?
• A type of device in a vehicle, which can cause an electrical overload to factory installed wiring is what?
• The reasoning process of moving from specific observations to broader generalizations is called what?
• The term for keeping evidence intact and uncontaminated is known as what?
• Ohm's Law formula
• Which construction type is noncombustible and built with steel and concrete with high fire resistance?
• The optimum fuel/air mixture where combustion is most efficient.
• The primary difference between Ordinary and Frame constructions involves the construction of what component?
• What is the standard unit of electric potential difference (voltage)?
• Which term is described as a fuel characteristic that has little significance when the fuel is released as a spray?
• The melting point of copper is approximately which temperature in Fahrenheit?
• Which characteristic of structural explosion damage has no direct correlation to the vapor density of the gas-vapor fuel?
• Which term describes a professional description that lists the necessary tasks, required items, and criteria for evaluating performance?
• This vehicle component will NOT usually ignite gasoline.
• Who has responsibility for monitoring safety conditions at the fire or explosion scene?
• The unit used to express radiant heat flux that signals the onset of flashover is which of the following?
• Which of these fuels has the lowest ignition temperature: kerosene, gasoline, methane, or propane?
• In glass, what term describes a network of fine cracks that can form from stress rather than direct impact?
• Which category of fires is heavily influenced by weather patterns including wind and humidity?
• In an electrical circuit, if the current leaving the panel is 12.5 A and flows through a 1500 W load, what is the amperage of the return path?
• Which toxin's levels dissipate over time after removal from the fire environment?
• In fire scene analysis, how is fuel load defined?
• Recreating pre-fire positions of contents
• What is the product of current (amps) and voltage (volts)?
• Which type of fire normally produces char from thermal decomposition?
• The process of electrically connecting two or more conductive objects.
• Which gas is often described as a narcotic exposure during fires?
• NFPA standard that prohibits gas piping in air ducts, clothes chutes, and elevator shafts
• What document is used to prevent disclosure of confidential information during investigations?
• Which organization develops standard methods for testing materials?
• A type of material that, when trapped in a concrete floor, can be recovered by using lime, diatomaceous earth, or non-self-rising flour is called what?
• Which term describes a substance that will ignite on contact with an oxidizer?
• The national applicable performance standards for fire investigators
• These can occur simultaneously and involve separate and independent examinations through which each party may develop an independent hypothesis.
• These medical procedures should be done of the entire deceased body, including the clothing and associated debris found near the body.
• A fire characteristic that is NOT necessarily an accurate indicator of the flame temperature
• Which concept regarding fire growth is often assessed through witness accounts?
• Which device requires keeping 18 inches away from combustibles to reduce fire risk?
• What is the range of numbers used on the NFPA 704 hazard rating scale?
• HIN stands for Hull Identification Number, used in investigations of which vehicle type?
• The temperature or point at which the vapor pressure of a liquid equals the external pressure applied.
• A pattern that is not necessarily an indicator of the presence of an ignitable liquid is called what?
• Which statement best describes Backdraft?
• Which term refers to devices or effects used in fireworks that may be found on a boat?
• Fire patterns that indicate a deliberate attempt to distribute fire from one location to another
• What process describes decomposition into simpler molecular compounds due to heat alone?
• The standards that gas cylinders must conform to (Dept. of Transportation)
• What type of explosion damage describes a heaving or pushing effect?
• Specific Gravity is described as the ratio of the density of a substance to the density of water for liquids and solids, and to air for gases. Which option correctly reflects this definition?
• Which act is identified by geographic area, clusters, temporal frequency, and materials and methods?
• Which phase involves searching for hidden fires and removing hotspots after the main fire has been extinguished?
• This fire spread mechanism has four modes: conduction, flame, hot gas layer radiation, and drop down.
• Which term describes a substance that spontaneously ignites upon exposure to atmospheric oxygen?
• In fire analysis, which metric directly relates to the rate at which energy is added to the fire?
• Which term describes the destruction or alteration of evidence that hinders an investigation?
• An example of heat transfer, when heating a steel beam to an unexposed part of a building results in a fire in that location.
• A subcategory of arson involving revenge that is typically not satisfied with a single fire?
• Which term describes the energy that leads to ignition, including ignition equipment and form?
• Fire scene examinations should NOT be conducted in WHAT MANNER?
• The agency that provides recall information on marine vessel fires is which?
• Which category of fire is associated with multiple fires and trailers?
• Deliberately setting fires to cause additional fires is characteristic of which category of fire?
• NFPA hazard placard: red TOP (flammability) yellow RIGHT (instability) blue LEFT (health) white BOTTOM (special/specific) is associated with which standard?
• What term describes the first cutting unit on a combine?
• Not every portion of which NFPA document is essential to every fire or explosion incident?
• The ratio of the density of a substance to the density of a standard is called WHAT?
• The remains of which appliance component may indicate if it was operating at the time of the incident?
• The information presented in NFPA 921 establishes WHAT?
• Which imaging modality is used during examination of the deceased body to detect hidden injuries and foreign materials?
• A specific device on a structure that is associated with electricity and is part of the electrical system.
• The first edition of NFPA 1033 was published in which year?
• AFCI stands for Arc-Fault Circuit Interrupter; what does the 'A' represent?
• Two factors or situations leading to a fire that may show the nature of the incident responsibility are called what?
• If voltage is 120 volts and current is 3 amperes, what is the electrical power in watts?
• Which statement correctly describes the behavior of carbon monoxide after a fire has been extinguished?
• In most single-family residences with a single-phase service that has three wires, what is the voltage between the two hot wires at the service entrance?
• What term describes any substance that will spontaneously ignite or explode upon exposure to an oxidizer?
• Which term describes the characteristic of an appropriate vapor-to-air mixture that will ignite when subjected to an ignition source?
• The ratio of the average molecular weight of a gas or vapor to the average molecular weight of air is called WHAT?
• Which explosion type is associated with dust and often lacks pronounced blast seats?
• In CFD modeling for fire dynamics, what is the primary purpose of dividing the space into cells?
• NFPA is not this type of institute.
• Overheating on a circuit is most likely to occur at this location on a circuit.
• Which evidence indicates pre-death trauma in a fire fatality?
• What fire dynamics model subdivides a room into multiple zones to simulate the spread of heat and smoke?
• A liquid with a flash point below 100°F is classified as which type of liquid?
• Which device is designed to release water in response to heat?
• Which type of fuel can only be ignited by a spark or pilot flame over specific ranges of gas concentration?
• A hair dryer drawing 8.3 A on a 120-volt service consumes approximately how many watts?
• The energy released during an explosion from the sudden conversion of potential energy and gas production under pressure is called?
• Which concept regarding physical evidence and the fire scene is NOT the sole responsibility of the fire investigator?
• Heaters located just under the interior faces of a refrigerators keep this from occurring.
• Which term describes evidence used to illustrate a fact with diagrams or models?
• The ratio of the mass of a given volume of a substance to the mass of equal volume of water at 4°C is called what?
• A sample obtained by canine alert is considered valid only after which step in evidence processing?
• In what group is one representative selected from each investigative party?
• Where can an investigator obtain recall information regarding fire causes in boats and the vessel manufacturer, model, and year?
• Weather history is an important factor when investigating these types of fires.
• What is the process of extinguishing hotspots and searching for hidden fires after suppression efforts?
• What is the basic chemical process associated with combustion?
• Which term describes the ideal proportion of fuel to air for complete combustion?
• Which construction type is Wood framed construction?
• Which term denotes the rate of flow of electric charge?
• The phrase 'In this phenomenon, the radiant ignition of exposed combustible materials is key' refers to which phenomenon?
• What are the two basic types of fire patterns?
• Which firefighting strategy requires restricting the use of water hoselines, especially at the area of origin?
• Exigency statutes, search warrants, and verbal or written consent relate to which concept when investigating a fire?
• A mechanism used to reduce voltages from the normal 120 V and to isolate the rest of an appliance from the supply circuit
• The transport of heat energy from one point to another, caused by temperature difference.
• Which term best describes a material that resists ignition and is often used in industrial construction?
• What is the standard unit of electric current?
• Which term describes the combined effect of thermal conductivity, density, and heat capacity?
• Which object is associated with the greatest heat release rate among common furnishings?
• Fire spread from one fuel package to another is generally caused by which mechanism?
• An item that tends to 'pull' toward the heat source if over 25 watts is known as what?
• Which process regarding fuel-powered equipment should be performed outside the fire scene perimeter?
• Which term describes one form of static electricity?
• Which risk poses the greatest danger when approaching a boat after a fire?
• Which two mechanisms describe convection heat transfer?
• What is the formula for electrical power?
• The fifth and sixth amendments DO NOT answer questions regarding constitutional protections in relation to WHAT fire investigation aspect? (4th amendment issue)
• Located at the origin, these should be considered individually during the development of a cause hypothesis.
• Fire in which the heat release rate or growth is controlled by the amount of air available to the fire.
• What type of evidence consists of statements by witnesses or experts?
• Which term is the constant related to energy released during complete combustion per unit mass?
• CFD stands for which term?
• Which device is used to control the flow of water to underground piping such as sprinklers or hydrants?
• What investigative practice should be done at a fire scene as a minimum?
• What is a key consideration when validating a fire test or model regarding the fire's characteristics?
• The process of photographing an item, then collecting, tagging and logging it is called what?
• A building described as Heavy timber construction is categorized as which Type?
• Which device isolates a load from the supply while stepping down voltage?
• Which term describes the combined practice of collecting and documenting evidence at a fire scene?
• In sprinkler head temperature color coding from low to high, which sequence correctly lists the colors?
• What term denotes the minimum temperature needed to heat a fuel so as to ignite and begin self-sustained combustion?
• Which factor is influenced by additional fuels in a vehicle after ignition?
• This is the typical extent of thermal injuries sustained from an explosion flame front, due to the very short duration.
• The justification used to enter a property in order to extinguish a fire is known as what?
• The electrical fault described as a pathway between an energized wire and a grounded wire is called what?
• What is the primary goal for an investigator when recording and photographing the scene?
• What is the first step to be taken by an investigator at the scene of an explosion?
• Which term is associated with devices used to create visual displays through combustion and controlled explosive effects?
• An outside screw and yoke valve is open when the stem is in which position?
• What component uses exhaust gases for propulsion and is typically the hottest point in an internal combustion engine?
• During excavation, which technique is used throughout the investigation to document the sequence of events?
• An item in the home that burns at a peak HRR of 3000-5000 kW, hotter than a pool of gasoline or a polyurethane chair is the...
• In the sequence of evidence handling, what step follows photographing an item?
• Which term describes the softening of the wire's thermoplastic insulation due to heating?
• Which color on the NFPA 704 placard represents flammability?
• Which option is used to identify the sprinkler head bulbs by temperature rating?
• Specific Gravity is defined as the ratio of the mass of a given volume of a substance to the mass of an equal volume of water at 4°C.
• Which explosive limit defines the maximum concentration of a flammable gas in air at which ignition can still occur?
• Which color on the NFPA 704 placard represents health hazards?
• What term denotes the amount of heat released during complete combustion, considered a constant for a specific fuel?
• The type of number an investigator should look for during a boat fire investigation.
• More people are killed by this in a fire incident, not necessarily by the flames of fire
• What is the name of the system used to rate a material's flame spread potential, with classes A, B, and C?
• During a major investigation, what procedure is important to establish and follow when a particular item is deemed evidence?
• What is the lower explosive limit of natural gas (methane)?
• Which term describes the energy that initiates ignition?
• During an explosion, the energy transformation primarily responsible for the blast effect is which?
• If a liquid has a flash point above 100°F, it is best described as which type of liquid?
• Which option may indicate if a device was operating at the time of the incident?
• This firefighting tactic made directly above the fire will help localize the fire.
• Damage and fire patterns on concrete that are not a positive indicator of a liquid accelerant are called WHAT?
• Also known as "Conclusions", what term is used to describe the final hypothesis?
• A process whereby a material increases in temperature solely due to exothermic reactions between the material and the surrounding atmosphere is known as?
• What type of evidence is an investigator's report?
• What describes observable or measurable changes in a material as a result of a fire?
• Which fire pattern is often caused by a natural gas leak?
• A factor in OHM's law that can be calculated if you know resistance and voltage.
• Which term defines the ratio of the density of a substance to the density of water for liquids and solids?
• Which fuse type combines overload protection with short-circuit protection using two elements?
• The two mechanisms of convection heat transfer are
• Which fire characteristic is NOT indicated by the angle of the borders of the V pattern?
• Which term describes a formal agreement among interested parties before a fire investigation begins?
• A building described as Wood framed construction is categorized as which Type?
• Which component on an electrical plug would most likely indicate it was designed to be inserted into a receptacle?
• What term describes the softening and loosening of the wire's thermoplastic insulation due to heating?
• Which fire process is vehicle motor oil NOT prone to undergo?
• Which term defines the temperature at which a liquid's vapor pressure equals the surrounding atmospheric pressure?
• Initiation of combustion by heat but without a spark or flame?
• This type of door must be used when installed in a fire-rated wall.
• A fire scene with multiple ignition points is best described as which type of fire?
• This occurs when intense radiated heat or direct flame contacts a surface during the fire, burning away deposits.
• Static electricity flowing from cloud to ground or from cloud to cloud is known as what phenomenon?
• A device on a fluorescent light fixture that transforms the voltage from household voltage to a higher voltage is called what?