IAAI CFI Study Questions and Answers: Fire Investigation Fundamentals, Exams of Pharmacology

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IAAI CFI Study Questions And Answers

A liquid with a flash point ABOVE 100F - ANSWER>>Combustible Liquid

If the current flowing out from an electrical panel is 12.5 amps, and it then flows through an electrical load of 1500 watts, what is the amperage of the remaining current flow of the return circuit? - ANSWER>>12.

If a hair dryer draws 8.3amps (in a home with 120-volt service), what is the wattage?

*Power (P) = current (I) x voltage (V) Watts = amps x volts - ANSWER>>

The year of the first edition of NFPA 1033 - ANSWER>>

The recommended distance for securing the perimeter of a blast scene

*That is, the distance from the furthest debris - ANSWER>>1.5 times

What temperature in the upper gas layer causes the onset of Flashover? - ANSWER>>1100°F

The temperature at which copper melts - ANSWER>>1960°F

The measurement of the radiant heat flux (from gas layer to the floor) that indicates the onset of flashover - ANSWER>>2 W/cm

The voltage between the two hot wires at the service entrance cables in most single-family residences in the United States (single-phase service with three wires) - ANSWER>>240 volts

The revision cycle for NFPA 921 (timespan) - ANSWER>>3 years

The flash point of power steering fluid - ANSWER>>350°F

In high-pressure fuel-injected vehicles, this is the typical range of pressure that is used to pump fuel from a fuel tank - ANSWER>>35-70 p.s.i.

The lower explosive and upper explosive limit of natural gas (methane)? - ANSWER>>5 and 17

The ignition temperature of power steering fluid - ANSWER>>680°F

Any substance that can undergo combustion - ANSWER>>Fuel

Two factors or situations leading to a fire that may show the nature of the incident responsibility. - ANSWER>>Act or Omission

This concept should not be included in a summary report of findings. - ANSWER>>Additional Investigative Recommendations

A law that may govern the fire investigation of a boat - ANSWER>>Admiralty Law

A type of device in a vehicle, which can cause an electrical overload to factory installed wiring - ANSWER>>After-market Equipment

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? - ANSWER>>Alive and Breathing

Those who have the responsibility for monitoring safety conditions at the fire or explosion scene - ANSWER>>All Team Members

The melting temperature of aluminum - ANSWER>>1220°F

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 - ANSWER>>Bonding

Most engine fires typically penetrate the interior compartment at this location of the vehicle - ANSWER>>Bottom Passenger Side of the Windshield

An investigator can closely examine this component of a cord to determine if it was plugged into a receptacle - ANSWER>>Brass Prongs (male ends)

The chemical and physical changes that occur in gypsum wallboard surfaces during a fire - ANSWER>>Calcination

A narcotic gas that one might be exposed to in the fire - ANSWER>>Carbon Monoxide

The levels of this toxin dissipate over time after removal from the fire environment. - ANSWER>>Carbon Monoxide

This toxic condition does NOT cause a cherry-pink coloration to the skin of the fire victim and is NOT visible on all skin types - ANSWER>>Carbon Monoxide Poisoning

This occurrence is the most common open-flame ignition source in non-fuel injected vehicles - ANSWER>>Carburetor Backfire

When the fire plume reaches the ceiling of a room and moves laterally along the ceiling - ANSWER>>Ceiling jet

An item in the home that burns at a peak HRR of 3000-5000kW, which is hotter than a pool of gasoline or a polyurethane chair - ANSWER>>Christmas Tree

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

Type of evidence consisting of tangible items

*as opposed to Testimonial Evidence or Documentary (written) Evidence - ANSWER>>Demonstrative Evidence

A burn pattern analysis that is MORE useful for evaluating fire spread, rather than length or intensity of burning - ANSWER>>Depth of Char

All voltages are _________________, which means that a battery or DC generator creates a potential difference that can force charge through a wire - ANSWER>>Differential

The ordinary sustained burning mode in most fires - ANSWER>>Diffusion Flame Burning

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 - ANSWER>>Document and Carefully Move

What type of evidence is an investigator's report? - ANSWER>>Documentary Evidence

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. - ANSWER>>Documentation

The standards that gas cylinders must conform to

(Dept. of Transportation) - ANSWER>>DOT Standards

Types of fuses that have one element for overloads and another element for short circuits - ANSWER>>Dual Element Fuses

A particular type of an explosion that does NOT often result in pronounced seats of explosion - ANSWER>>Dust Explosion

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

Class C: Flame spread index 76- 200 - ANSWER>>Flame Spread Rating

This type of fuel can only be ignited by a spark or pilot flame over specific ranges of gas concentration - ANSWER>>Flammable Gases

A liquid with a flash point below 100*F - ANSWER>>Flammable Liquid

The characteristic of an appropriate mixture of vapor-to-air, which will cause it to ignite when subjected to an ignition source - ANSWER>>Flash point

A specific fuel characteristic, which will have little or no significance when the fuel is released in a spray form. - ANSWER>>Flash Point

In this phenomenon, the radiant ignition of exposed combustible materials is key - ANSWER>>Flashover

This 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 - ANSWER>>Flashover

This fire phenomenon is not really a consideration for wildfires - ANSWER>>Flashover

These construction features are tested for fire spread from below, but NOT from above - ANSWER>>Floor Assemblies

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

A type of material that, when trapped in a concrete floor, can be recovered by using lime, diatomaceous earth, or non-self-rising flour. - ANSWER>>Ignitable Liquid

Ignition that involves transferring sufficient heat to a fuel by passage of electrical current to ignite material that is closeby - ANSWER>>Ignition by Electrical Energy

The minimum temperature needed to heat a fuel so as to ignite and begin self- sustained combustion - ANSWER>>Ignition Temperature

An item that tends to "pull" toward the heat source

(*if over 25 watts) - ANSWER>>Incandescent Light Bulbs

A category of fire that is strongly indicated by the confirmation of multiple fires - ANSWER>>Incendiary Fire

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

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 - ANSWER>>Neutral Position

The national applicable performance standards for fire investigators - ANSWER>>NFPA 1033

NFPA standard that prohibits gas piping in air ducts, clothes chutes, and elevator shafts - ANSWER>>NFPA 54

The NFPA standard for hazard identification - ANSWER>>NFPA 704

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

Any substance that spontaneously ignites upon exposure to atmospheric oxygen.

• ANSWER>>Pyrophoric Material

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

Determining which pattern was produced at the point of origin becomes more difficult as WHAT increases? - ANSWER>>Fire Size and Duration

The softening and loosening of the wire's thermoplastic insulation due to heating (fire) - ANSWER>>Sleeving