IAAI Certified Fire Investigator (CFI) Practice Test

These questions are part of the practice quiz. Start practicing

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