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IAAI CFI Actual Exam 2025 IAAI CFI Exam
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The melting temperature of aluminum - Answer-1220°F Which one of these is NOT considered a competent ignition source? Metal-to-metal sparks, Aluminum-to-pavement sparks, Metal-to-pavement sparks, Motor bearing sparks - Answer-Aluminum-to-pavement sparks A meaningful analysis of a fire requires an understanding of the fire growth, the total heat released, and WHAT? - Answer-Heat Release Rate What does he term AFCI stand for? And, the "A" specifically represents what? - Answer-Arc-fault circuit interrupter The organization that develops standard methods for testing materials
- Answer-ASTM Initiation of combustion by heat but without a spark or flame - Answer- Auto-ignition A deflagration resulting from the sudden introduction of air into a confined space containing oxygen-deficient products of incomplete combustion - Answer-Backdraft
An explosion caused by a combination of combustible materials heated to the ignition point and a sudden introduction of oxygen to support combustion - Answer-Backdraft A boat device that owners fail to keep clean, which is a frequent cause of engine compartment fires on boats - Answer-Backfire Flame Arrestor A device on a fluorescent light fixture that transforms the voltage from normal household voltage to a higher voltage - Answer-Ballast The starter motor draws its energy from this source - Answer-Battery The burden of proof in a criminal trial - Answer-Beyond a Reasonable Doubt The component that controls temperature in many heat-producing appliances - Answer-Bimetallic Thermostats This may occur when the vapor pressure of a liquid exceeds atmospheric pressure *And this is the most common mechanical explosion - Answer-BLEVE The temperature or point at which the vapor pressure of a liquid equals the external pressure applied - Answer-Boiling Point The process of electrically connecting two or more conductive objects
This occurs when intense radiated heat or direct flame contacts a surface during the fire, burning away deposits - Answer-Clean Burn This is a fire effect to furniture that does NOT provide the investigators with clues concerning the type of ignition source, but can show fire spread and intensity - Answer-Collapsed Furniture Springs A fire characteristic that is NOT necessarily an accurate indicator of the flame temperature - Answer-Color This feature distinguishes the heat-sensitive bulbs of sprinkler heads from each other - Answer-Color Codes A chemical process of oxidation, which occurs at a rate fast enough to produce heat and usually light in the form of either a glow or a flame - Answer-Combustion A building design feature that aims to limit the fire to its origin. - Answer-Compartmentation Located at the origin, these should be considered individually during the development of a cause hypothesis - Answer-Competent Ignition Source This should be donned when dealing with hazardous chemicals - Answer-Complete PPE An example of heat transfer, when the heating of a steel beam to an unexposed part of a building results in a fire in that location - Answer- Conduction
Overheating on a circuit is most likely to occur at this location on a circuit - Answer-Connection Points Consensus agreement between interested parties should be developed prior to the commencement of WHAT? - Answer-Joint Investigation Complicated patterns in glass - Answer-Crazing A type of scene or circumstances, in which fires do NOT always destroy all physical evidence - Answer-Crime Scenes A factor in OHM's law that can be calculated if you know resistance and voltage - Answer-Current (amperage) The reasoning in the scientific method used to test an hypothesis - Answer-Deductive Reasoning The reasoning process of moving from generalizations to particular assertion (*"Reduce to Deduce" *Test hypothesis ("deduce") *Test based on known facts *More confident assertion than induction) - Answer-Deductive Reasoning Type of evidence consisting of tangible items *as opposed to Testimonial Evidence or Documentary (written) Evidence - Answer-Demonstrative Evidence
An explosion that most often occurs in confined areas of relatively wide dispersal, where combustible dust can accumulate in sufficient quantity to support a propagating reaction. - Answer-Dust Explosion This analysis may be performed to determine the pre-fire condition of the engine and to establish possible motive for the destruction of the vehicle. - Answer-Engine Oil Analysis The fire scene itself needs to be considered as WHAT? - Answer- Evidence The process of photographing an item, then collecting, tagging and putting it in a log - Answer-Evidence Collection The importance of this fire investigative practice is no different in wildfire investigations, compared to structural fires. - Answer-Evidence Collection and Documentation 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 - Answer-Evidence Custodian The justification used to enter a property in order to extinguish a fire - Answer-Exigent Circumstances Also known as "Conclusions" - Answer-Final Hypothesis A team comprised of a homicide detective, medical examiner, and fire investigator - Answer-Fire Death Team
A type of analysis used to predict fire phenomena and characteristics of the environment - Answer-Fire Dynamics Analysis Observable or measurable changes in or on a material as the result of a fire - Answer-Fire Effects Once a fuel is ignited in a motor vehicle, any additional fuels contained in the vehicle have significant effect on WHAT fire factor? - Answer- Fire Growth Rate In a wildland fire, this fire characterisic is indicated by the degree of damage to the wildland fuel - Answer-Fire Intensity This investigative determination is based on witness information, fire patterns, arc mapping, and fire dynamics - Answer-Fire Origin The fifth and sixth amendments DO NOT answer questions regarding constitutional protections in relation to WHAT fire investigation aspect? (4th amendment issue) - Answer-Fire Scene Access Recreating pre-fire positions of contents - Answer-Fire Scene Reconstruction This type of door must be used when installed in a fire-rated wall. - Answer-Fire-rated Door This is the typical extent of thermal injuries sustained from an explosion flame front, due to the very short duration. - Answer-First or Second Degree Burns
The two mechanisms of convection heat transfer - Answer-Forced and Natural This law allows fire investigators to gain information, in most states - Answer-Freedom of Information Act Any substance that can undergo combustion - Answer-Fuel Total quantity of combustible contents of a building, space, or fire area (expressed in heat units or the equivalent weight in wood) - Answer- Fuel load This system in a vehicle has the following sequence of components: Fuel tank, fuel pump, fuel injector/carburetor, manifold, and cylinders.
- Answer-Fuel System Type of burning that occurs in the early stages of a compartment fire - Answer-Fuel-controlled Burning The location where firefighters should re-fuel all gas-powered equipment (away from the fire scene) - Answer-Remote Area NFPA is not this type of institute - Answer-Government Institute NFPA 921 is this type of document - Answer-Guide The information presented in NFPA 921 establishes WHAT? - Answer- Guidelines
Biological, chemical, physical, and radiological are examples of this concept that fire investigators should be aware of when investigating a fire scene - Answer-Hazards The first cutting unit on a combine - Answer-Header The measure of the rate of heat transfer to a surface - Answer-Heat flux The amount of heat released during complete combustion, which is considered a constant for a specific fuel (Generally considered a material property and therefore a constant for a specific fuel) - Answer-Heat of Combustion The heat energy that brings about ignition (divided into two parts: (a) equipment involved in ignition and (b) form of heat of ignition) - Answer-Heat of Ignition The fire characteristic that most affects fire growth during the pre- flashover phase of a fire - Answer-Heat Release Rate The transport of heat energy from one point to another point, caused by temperature difference between those points - Answer-Heat transfer The fire phenomenon responsible for much of the physical evidence used by fire investigators - Answer-Heat transfer The shattering type of explosion damage - Answer-High-Order Damage
A category of fire that is associated with multiple fires and trailers - Answer-Incendiary Fire This person can grant permission for a fire investigator to enter a scene before the fire is completely extinguished - Answer-Incident Scene Commander The reasoning process of moving from specific observation to broader generalizations (*Induction is to "increase" *Develop hypothesis ("induce") *More uncertain than deduction *Based on empirical data, training, and experience) - Answer-Inductive Reasoning Any person, entity, or organization with obligations or whose rights or interest might be affected by the investigation of a specific incident - Answer-Interested Party (1) Trust, (2) Caution, and (3) Distrust are three types of what? - Answer-Interviews This fire pattern is often caused by a natural gas leak - Answer- Inverted Cone Pattern Fire patterns commonly created when a vertical flame plume does not reach the ceiling - Answer-Inverted Cone Patterns In what group is one representative selected from each investigative party? - Answer-Team Leader Committee
A certain pattern that is not necessarily an indicator of the presence of an ignitable liquid - Answer-Irregular Pattern A professional description that (1) describes the specific job task, (2) lists items necessary to complete the task, and (3) describes measurable outcomes and evaluations for the task - Answer-Job Performance Requirement These can occur simultaneously and involve separate and independent examinations through which each party may develop an independent hypothesis - Answer-Joint Investigations Which of these fuels has the lowest ignition temperature: kerosene, gasoline, methane, or propane? - Answer-Kerosene The type of energy that is converted suddenly from potential energy during an explosion, with the production and release of gases under pressure. - Answer-Kinetic Energy This entity must confirm any sample obtained by canine alert, to be considered valid - Answer-Laboratory Analysis One of the most dangerous situations an investigator may encounter when examining a boat afloat after a fire - Answer-Lack of Stability This material is NOT acceptable to be used on the exterior (but is acceptable for the interior). - Answer-Laminated Wood The amount of heat absorbed by a substance during its change from a liquid to vapor - Answer-Latent Heat of Vaporization
NFPA hazard placard: red TOP (flammability) yellow RIGHT (instability) blue LEFT (health) white BOTTOM (special/specific) *(0 minimal to 4 severe hazard) - Answer-NFPA 704 Not every portion of WHAT document is essential to every fire or explosion incident - Answer-NFPA 921 To submit a proposal to the NFPA 921 Committee, forms are available from the _____________________. - Answer-NFPA website Type of construction principally used in industrial type buildings - Answer-Noncombustible This protects confidential, trade secret, and propriety information in a fire investigation - Answer-Nondisclosure Agreement During a major investigation involving multiple tenants, this should NOT be allowed until after the entire area has been examined and safety concerns have been addressed - Answer-Occupant Access The primary difference between Ordinary and Frame constructions involves mostly the construction of WHAT? - Answer-Exterior Walls One type of valve commonly used to control water flow to fire sprinkler system
*which is open when the position of the stem is up - Answer-Outside Screw and Yoke The electrical compromise between an energized wire and a ground wire - Answer-Overcurrent The process of extinguishing hotspots and searching for hidden fires, after suppression efforts - Answer-Overhaul A chemical reaction that combines a substance with oxygen - Answer- Oxidation The basic chemical process associated with combustion - Answer- Oxidation This occurs when there is a poor electrical connection - Answer-Oxide Interface A material that is NOT commonly subject to self-heating - Answer- Paper While the scene is being "dug out" or excavated, this technique is used throughout the investigation process to document the sequence of events. - Answer-Photography When the origin is clearly defined, it is possible to make a credible determination regarding the cause of the fire, even without the availability of WHAT? - Answer-Physical Evidence of the Cause A fuel item that has the greatest peak heat release rate (in unconfined burning). - Answer-Polyurethane Sofa
This item may be found on a boat because they are often used in firework events - Answer-Pyrotechnics Fire spread from one fuel package to another is generally caused by WHAT? - Answer-Radiative Ignition The ________________________ as determined by witnesses is highly subjective - Answer-Rate of Fire Growth The primary goal for an investigator recording and photographing the scene - Answer-Recalling Observations This process regarding fuel-powered equipment should be done outside the fire scene perimeter - Answer-Refueling This characteristic of structural explosion damage has no direct correlation to the vapor density of the gas-vapor fuel - Answer-Relative Elevation of Damage This type of fire spread mechanism has four modes: which are conduction, flame, hot gas layer radiation, and drop down - Answer- Remote Ignition Type of heating that results from the passing of an electrical current through a conductor - Answer-Resistance Heating This is caused when electricity flows through a loose connection *And, through an oxide interface - Answer-Resistance Heating
During this firefighting strategy, the use of water hoselines should be restricted and limited, especially in the area of origin. - Answer- Overhaul Exigency statutes, Search warrant, Verbal or written consent relate to what key concept when investigating a fire? - Answer-Right to Entry Which of these material's surface would heat up the quickest when exposed to radiant flux: oak boards, concrete wall, rigid polystyrene panels, or gypsum plaster? - Answer-Rigid Polystyrene Panels These types of constructions or vehicles are similar in many ways to fires in houses and mobile homes. - Answer-RV and Motor Homes The first step to be taken by an investigator at the scene of an explosion. - Answer-Secure the Scene A process whereby a material undergoes a chemical reaction and increases in temperature solely due to exothermic reactions between the material and the surrounding atmosphere - Answer-Self-Heating Type of photography that is helpful in understanding the relationship of a small subject to its relative position in a larger area - Answer- Sequential Photographs Geographic area, clusters, temporal frequency, and materials and methods are useful in identifying and establishing this act - Answer- Serial Fire-Setting At a minimum, this investigative practice should be done on all fire scenes - Answer-Simple Sketch
