North Carolina Fire Investigation Technician (FIT) Practice Test

These questions are part of the practice quiz. Start practicing

• What defines alternating current (AC)?
• What concept is important to utilize in fire investigations?
• Radiation is transferred more easily between which types of sources?
• What risk arises if a leak of propane or natural gas occurs?
• Under what circumstance may a BLEVE occur?
• True or False: Sometimes fire patterns are not visually obvious.
• Which hazard is significant when dealing with natural gas?
• What contributes to the ignitability of liquids when in contact with hot components?
• NFPA 921 defines motive as ______.
• Which of the following is a common fire suppression activity used in wildfires?
• What type of evidence includes items that can physically be analyzed?
• Which of the following is an example of an incendiary device?
• Why might exhaust venting be crucial in a building?
• How is voltage commonly represented in equations?
• What is considered a clean burn?
• What type of electrical circuit may RVs utilize?
• What happens when a seizure occurs in legal terms?
• What is the maximum allowed percent capacity for transporting storage tanks?
• Where can hydrogen gas be present during vehicle fires?
• What does the K-factor represent in fire calculations?
• How is a hypothesis best defined?
• What is the common method by which combustion air is provided?
• What is described as the output in a system?
• True or False: It is difficult to absolutely prevent static electricity.
• Which of the following factors is essential for understanding fire dynamics?
• Which component is crucial for providing electrical energy in vehicles?
• True or False: Portable lighting is not required at every fire scene.
• What is the term for the heating of a fuel to the point where it ignites without an external ignition source?
• Which type of evidence is created specifically by a witness or attorney to illustrate a point?
• What is fire spread analysis primarily focused on?
• Which methods can ignite gas from a burner?
• In the context of hypothesis testing, why is disproving important?
• Which of the following are considered fire effects?
• What type of reasoning is primarily used in the hypothesis testing step of the scientific method?
• What are interstitial spaces in a building?
• What type of flame is most efficient in burning fuels completely?
• The intentional burning of property that is not categorized as arson is typically considered what?
• Where is direct current typically found?
• Why is exhaust venting required in buildings?
• Your perimeter on an explosion incident should be set up ______.
• The optimum concentration for combustion is typically what?
• What is the effect of rapidly cooling glass?
• Which factor is crucial when documenting a fire scene?
• What does a tool mark at a point of forcible entry signify in fire investigations?
• What impact do hydrocarbons have in the context of fire?
• Every fire is considered a _________ that requires a response by the fire service.
• What role does temperature play in the behavior of gas during a fire?
• What is a major skill of accelerant residue evidence collection?
• What should investigators be aware of regarding fire extinguisher usage during a vehicle fire?
• What is confirmation bias?
• When does the peak Heat Release Rate occur in a fire?
• What method is commonly used to locate leaks in fuel gas piping?
• Which of the following is NOT a criteria for a confined space according to OSHA?
• What size are fire sprinkler system indicating valves typically?
• Why should a smoldering ignition source not be disregarded?
• True or False: Temperature and flame color should be relied on as indicators of what is burning.
• When is a criminal search warrant typically issued?
• The first material ignited that sustains the combustion process beyond the actual ignition source must be ______.
• Where are smoke detectors typically installed for optimal effectiveness?
• What is defined as the lowest temperature at which a liquid emits sufficient vapors to support a momentary flame?
• What defines an area of origin in a fire investigation?
• What primarily influences conduction?
• In which scenarios are overloads that cause fires least likely to occur?
• True or False: Comparing relative depth of calcinations is a reliable method for indicating fire spread.
• What does NFPA 10 pertain to?
• True or False: Fuel gases can function both as the initial fuel and as a fuel source for the fire.
• What is the minimum ignition energy required for fugitive gases?
• What is the significance of understanding fire dynamics?
• In a vehicle investigation, what should the investigator start with?
• Which aspect is considered important when transporting evidence?
• In fire investigation, what is crucial for ensuring the preservation of evidence?
• True or False: Origin determination and cause determination are two unrelated topics.
• Which of the following does NOT support combustion?
• Which search pattern is NOT typically used in fire investigations?
• What is a county?
• What are protected areas?
• Compared to cold air, warm air will hold more of what substance?
• What characterizes an exothermic reaction?
• Most vehicles primarily use what type of electrical current?
• Which dimension is critical in assessing surface fuels?
• What describes the phenomenon of the doughnut-shaped pattern in fire investigations?
• What visible occurrence may happen when pulling a plug while current is flowing?
• What is a major consequence of failing to recognize signs of lying during an investigation?
• What does carbon monoxide bind with when inhaled?
• Which factor can lead to the creation of a fire storm?
• What is the primary focus of a technical review in fire investigations?
• OSHA requires how many criteria to establish a proper permit-required confined space?
• What is a crucial factor for maintaining the integrity of evidence?
• A plan in fire investigation is most often referred to as what?
• What level of carboxyhemoglobin (COHb) in the body is generally considered fatal?
• Which two gases are commonly released during a fire?
• What critical aspect is part of gathering evidence at a fire scene?
• What is empirical data based on?
• What is the main purpose of grounding in electrical systems?
• Which item would be considered a personal item in fire investigations?
• What is the first component of the fire tetrahedron?
• What must the air-to-gas ratio be within for fuels with a high surface-to-mass ratio to sustain combustion?
• When using arc mapping, what does the presence of electrical arcing indicate?
• What is one potential consequence of improperly trained fire investigators?
• Which of the following could prevent the area of origin from being defined?
• What does overload refer to in electrical terms?
• A common challenge in fire investigation involves understanding patterns of?
• Why do ventilation controlled fires tend to burn more intensely?
• Seismic effect injuries may present as which of the following?
• What is the purpose of fire stops in a building?
• What can sufficiently ignite from contact with heated exhaust system components?
• How can mechanical sparks occur?
• What is the significance of analyzing fire patterns?
• What is physical evidence?
• Where can an investigator view various technical manuals?
• What is one of the first tasks an investigator should conduct at a fire scene?
• How is a guide different from a standard?
• A lack of fire stops in a building may allow for what?
• What does beveling indicate in fire investigations?
• What is a chain of custody?
• What is the legal term for intentionally starting a fire or causing an explosion?
• Polyvinyl chloride is commonly used as what?
• True or False: Containers are required by the US Department of Transportation to have pressure relief valves or fusible plugs.
• Why should confirmation bias be avoided in fire investigations?
• Which of the following are the three fuel categories in vehicle fires?
• Which factor does NOT affect the rate of char?
• True or False: Temperatures in most structure fires typically exceed 1900 degrees Fahrenheit for long durations.
• Which of the following is NOT a factor affecting char rate?
• What is static electricity?
• Which of the following statements is about the growth and development of fire?
• In what three ways is heat transferred?
• What is the main objective of document analysis in fire investigations?
• What aspect of fire investigation was highlighted by unusual flame patterns?
• What is one key advantage of photoelectric smoke detectors over ionization detectors?
• What is the most common valve that controls gas flow from the container?
• Which statement best describes the effect of heat on materials?
• What is a parting arc in electrical systems?
• A lay witness is also referred to as what?
• Which four components are required to support combustion?
• Who determines the qualifications of an expert witness in a trial?
• What does thermal decomposition signify?
• What might be challenging to differentiate in well-developed compartment fires?
• What is a common motivation for child firesetters?
• What is the purpose of a catalytic converter?
• What does "oxidation" in the context of fire investigation refer to?
• Which path does electricity typically follow?
• What does vaporization refer to in fire investigations?
• What is the primary objective of a fire cause and origin investigation?
• What does site safety require identification of?
• In a complex investigation, handling of evidence should be designated to whom?
• Which NFPA standard is related to sprinkler systems in one- and two-family dwellings?
• Which unit is most commonly associated with measuring mechanical power?
• What is aluminum primarily used for in fire safety?
• Active fire protection systems are categorized into which three general areas?
• True or False: Static may accumulate in liquid, particularly with liquid hydrocarbons.
• The compartmentation of a structure refers to what?
• What should be done as soon as possible before a scene becomes altered?
• What are the three basic causes of fire patterns?
• What does oxidation involve in a combustion context?
• What role does an exhaust vent serve in a fire investigation context?
• What can hot embers carried by the wind initiate?
• Courts in some states recognize what as a legal cause of action against a spoliator?
• Which of the following accessories attached to the engine can fail during a fire?
• What role does experience play in conducting fire analysis?
• What is the primary purpose of fire patterns analysis?
• What role does an investigator play regarding the conclusion of a fire investigation?
• What is a critical approach to examining evidence?
• Who is generally responsible for security and access at an investigation site?
• What type of notification is essential in healthcare facilities during a fire?
• What is a primary fire risk associated with radiant heaters?
• In what areas might a fire investigator render opinions?
• What are modified ignition sources?
• What causes annealed springs to form?
• What category do flaming ignition sources fall under?
• A delay to wait for daylight during an investigation is generally considered?
• What is a fire flank?
• An incendiary fire is ______.
• What is a significant consideration when determining the cause of a fire?
• Full room involvement can result in the production of which type of patterns?
• What is the starting level of oxygen in the atmosphere?
• Buoyant flows in fire scenarios are caused by what phenomenon?
• What is an interrogatory?
• What role do dust explosions typically play in industrial settings?
• Natural gas is supplied through which of the following?
• An investigation must take place within a "reasonable time" following which event?
• How can ignition sources be characterized?
• Where would private mode notifications be more appropriate?
• What information should you gather from a witness at a fire scene?
• After flashover, fire burning transitions from which condition to another?
• Through deductive reasoning, an ultimate conclusion can be described as?
• Which characteristic of wires does a lower AWG number signify?
• How are lines of demarcation created?
• Which OSHA regulation deals with operations at a hazardous waste site?
• What is the purpose of the soap bubble solution in fire investigations?
• Which of the following is a characteristic of evidence in an investigation?
• What is characteristic of a back-stabbed receptacle?
• During an investigation, what role do witness statements play?
• What does the term 'allowing of metals' refer to?
• What happens to the combustion rate when the fuel mixture is either fuel rich or fuel lean?
• The term 'flashpoint' refers to ______.
• What should be considered during the hypothesis testing process?
• What is a defining feature of photoelectric smoke detectors?
• Deflagration is characterized by what?
• Exhaust venting is required for what reason?
• What are examples of different compounds produced during the combustion process?
• What aspect has a significant effect on the results of an explosion?
• Carbon dioxide (CO2) is a good suppression agent because ___________.
• Which component is essential for alerting occupants in a fire alarm system?
• A fire is what kind of reaction?
• Where is non-combustible construction primarily used?
• How does inductive reasoning work in the context of investigations?
• What is pyrolysis?
• What type of fuels do engine lubricants belong to in vehicles?
• What factors define sprinkler heads?
• Some of the most common forms of gas utilization equipment are ________.
• Which of the following is NOT a common type of pressure regulator?
• What types of output signals can a fire alarm control unit generate?
• Which of the following does NOT contribute to effective fire alarm notifications?
• What does an event data recorder do?
• What type of gauge gives readings of liquid contents at various levels?
• What is the first admissibility requirement under FRE rule 702?
• Natural gas is typically recovered from what source?
• What occurs when current flows through a high resistance path?
• How must a body found at a fire or explosion scene be treated?
• When should witnesses be separated during an investigation?
• What kind of damage can prevent the use of analytical tools during an investigation?
• Which NFPA standard addresses the competence of responders to hazardous materials incidents?
• What effect does the production of dense black smoke indicate in a fire scenario?
• What is a weatherhead in terms of electrical service?
• What are fire effects?
• What does the arson-reporting/immunity act require from insurance companies?
• In fire investigation, what role does understanding heat capacity play?
• What are the levels of hypothesis certainty?
• Which step in the scientific method involves testing hypotheses?
• How often is NFPA 1033 revised?
• What is the typical arrangement in larger electrical structures?
• Dry chemical extinguishing agents do not __________.
• What does any other color in wiring indicate?
• Where can guidelines for proper PPE for wildland firefighting be found?
• Devices connected to openings in tanks are known as:
• A camera with a resolution of at least what is recommended for fire investigation documentation?
• How often is NFPA 921 revised?
• The conductor size determines:
• What type of system involves smoke detectors as a critical component?
• What is the common power source for appliances in fire investigations?
• True or False: If a fire continues to intensify and grow, the rate of mass loss will increase.
• A complex fire investigation generally involves which of the following?
• True or False: Accelerated fires burn faster than non-accelerated fires do, but they do not burn at higher temperatures.
• Examples of notification appliances include:
• Fire investigators can primarily be found in which two sectors?
• Which statement about hypothesis formation is accurate?
• What does beveling on wooden wall studs indicate?
• What does spalling refer to?
• Under high voltages, what property does air exhibit when conductors are separated?
• Long, unusual flame and heat damage at floor level is usually caused by what?
• Corrosion may cause as many as what percent of all known gas leaks?
• What type of fuel is characterized as being inorganic?
• How are early hypotheses characterized in the context of fire investigations?
• In which situation would collecting evidence be most critical?
• What is the most common fuel char is found on?
• To whom do NFPA documents apply when adopted?
• What is the process of melting?
• What should influence an investigator's decision to collect physical evidence?
• What challenges may an investigator face during litigation?
• How is heat measured?
• Are fire movement patterns better indicators of origin than intensity patterns?
• What does the 5th amendment protect against?
• How is Heat Release Rate (HRR) measured?
• What role does documentation play in fire investigations?
• A blast pressure front encountering a significantly different temperature layer may cause what?
• What is a lay witness?
• Arson to an occupied structure is generally classified as what degree?
• What do ground fuels primarily consist of?
• The medical community estimates burn damage using which method?
• What is the fire point of a volatile combustible substance?
• What should an investigator prioritize when reviewing evidence?
• What does fire pattern analysis involve?
• When conducting a fire investigation, what is a critical factor to monitor?
• What is calcination in the context of fire investigations?
• What is a crucial factor when identifying vehicle evidence?
• How is Heat Release Rate (HRR) measured?
• What are blow holes indicative of in fire investigations?
• What must each type of incident investigated by an investigator establish?
• Before removing evidence from the fire origin area, what must be done?
• Scene photos during an investigation should be accompanied by what?
• What is the purpose of a "formal interpretation" in fire investigation standards?
• What is the primary purpose of fire investigation?
• What might indicate the occurrence of spot fires?
• Modern vehicles commonly include which of the following as part of the airbag activation system?
• What are two types of physical or phase changes?
• What phenomenon occurs when circuits overheat?
• What type of device is a manual fire alarm box?
• When collecting conductors from an arc survey site, what should an investigator ensure?
• What is the NFPA standard for workplace electrical safety?
• Container appurtenances refer to what?
• What is a building's fuel gas system primarily used to control?
• A complex investigation generally includes what?
• Which of the following would NOT typically be considered a symptom leading to juvenile firesetting?
• Which of the following is considered the basic law of electricity for a resistive circuit?
• What type of evidence will most directly point toward an incendiary fire?
• Who is responsible for managing access to a fire investigation site?
• What defines the relationship between fire behavior and the presence of snags?
• A thermopile consists of a series of what?
• What are fireballs?
• Is the use of a neutral UV filter on a camera recommended for all fire scene photography?
• What can happen when a positively charged lead goes to the ground?
• Is it true that the appliance must be compatible with the type of gas it uses?
• What is a characteristic of a laceration sustained in a seismic event?
• According to fire investigation principles, what is critical to establish at the hypothesized origin?
• What is the definition of a protocol in the context of fire investigations?
• What is the purpose of NFPA 1033?
• What should be done if a strong odor of an ignitable liquid is present in a sample?
• Which type of smoke detector uses light scattering or obscuration for operation?
• What is the purpose of a systematic approach in fire investigation?
• A material will display more evidence of oxidation when exposed to what condition?
• According to ANSI Z535.4 standards, what does a caution label indicate?
• Loss, destruction, or material alteration of an object or document that is evidence or potential evidence in a legal proceeding is known as _______.
• What must an investigator determine when dealing with fire protection systems?
• Which of the following is NOT a reason to conduct fire spread analysis?
• How is the combustion of a fuel mixture affected by balance?
• What is the significance of a fire investigation report?
• What is the most common type of mechanical explosion encountered by investigators?
• In vehicle fires, which of the following is NOT a fuel category?
• A statement of danger should identify what?
• What can the main electrical distribution panel often be referred to as?
• What is the primary energy source in a vehicle?
• Which of the following is NOT a type of valve commonly associated with fire investigation?
• What effect does heat have on the body that may cause a specific posture?
• What is the primary function of a gas burner?
• How should a fire investigator visualize a fire?
• What is the definition of fire?
• What is a primary characteristic of diffusion flames?
• What is referred to as the 'headspace' in fire investigation?
• What is the purpose of conducting an administrative review?
• Which of the following are hazard condition categories?
• Investigations should be approached in what manner for consistency?
• Natural gas piping cannot be run through which of the following?
• What defines an "interested party" in a fire investigation?
• How should serious injury fires and explosives be investigated?
• What is the primary function of firefighter ventilation techniques?
• Which materials are known to produce large amounts of dense black smoke when burned?
• Which of the following elements is key in determining how a fire spread?
• How many spokespersons should represent each interested party in a fire investigation?
• Where is the fire heel situated in relation to the fire head?
• When are vaporizers frequently used?
• Which of the following best describes an impact load?
• An administrative search warrant cannot be employed once there is evidence of which situation?
• What is heat?
• What is the purpose of fuses, circuit breakers, or fusible links in a vehicle?
• Where is service equipment typically located in a building?
• Which type of sprinkler system activates when a certain temperature threshold is met?
• What is the consequence of oxygen levels falling below 10 percent?
• When does a non-seated explosion occur?
• Which of the following is NOT considered demonstrative evidence?
• What does the term "danger" indicate according to ANSI Z 535.4?
• What do pressure gauges measure in relation to tanks?
• What must be done with a hypothesis according to the scientific method?
• Which of the following best describes an 'accelerant'?
• What is a key factor that impacts witness accuracy in reporting fire growth?
• Mechanical power for motors is usually expressed as what unit?
• What can happen to PVC in a fire?
• In incidents where individuals survive but are injured, what should the investigator do?
• What does metal to pavement contact typically produce?
• What does the presence of melted metals in a vehicle indicate?
• Why must an investigator be cautious with information obtained during an investigation?
• True or False: The investigation process can include evaluating the building's structural integrity.
• Which of the following is a crucial element for determining the area of origin in a fire investigation?
• What characteristic do aluminum conductors exhibit in the event of a fire?
• During a trial, what key role does a fact witness provide?
• What does NFPA 921 provide for fire investigations?
• Which aspect is critical when investigating confined spaces?
• Effective scene searching during investigations primarily aims to achieve what?
• What basic incident information must be obtained during the initial assignment and response?
• What can an overload in a circuit cause?
• What is the primary purpose of a fire alarm control unit?
• In ordinary construction, what are exterior walls made of?
• What are some of the best fuels commonly composed of?
• Which statement best describes what happens during full room involvement in a fire?
• Which factors can influence the temperature of an electrical arc?
• What is the purpose of a chain of custody in evidence handling?
• Rule 701 effectively limits _______.
• What must a fire investigator consider when interpreting fire patterns?
• In a well-developed compartment fire, fire investigators may find it difficult to do what?
• Which method of evidence collection is recommended for accelerants?
• Farm, logging, construction, or highway maintenance equipment may contact which type of material?
• What risk does an investigator face if they are complacent?
• What is the point of origin in a fire investigation?
• What is the equation for Ohm's Law?
• What is an inverted cone pattern in fire investigation?
• What does fugitive gas refer to?
• How is heat flux defined?
• What is meant by arc mapping in fire investigations?
• What are the four general circumstances that justify a search and seizure in a fire investigation?
• What is the significance of documentation in fire investigations?
• What are the primary forms of discovery in investigations?
• What type of information might be deemed pertinent during a witness interview?
• Which of the following are classified as groups of injuries related to an explosion scene?
• During a fire, can materials change their physical state due to heat?
• Why is early suppression of a fire within the area of origin a priority?
• What is the condition of standard conductors melted by fire?
• How is temperature defined in the context of physical evidence?
• What is one possible hazard of utilizing burners that are turned on but not lit?
• What is the usual voltage of a vehicle battery?
• What is ampacity?
• Which of the following is an example of a diffusion flame?
• What conditions must be met for ignition from an electrical source to occur?
• Which two temperature scales are the most common in empirical studies?
• What occurs during lateral confinement?
• Which characteristic is NOT associated with a "warning" label?
• What is the primary purpose of installing valves in a gas piping system?
• Why are snags considered important in fire behavior analysis?
• Why is continual atmospheric monitoring necessary at a fire scene?
• What does a flashover indicate during a fire event?
• Children are drawn to setting fires because of ________.
• What is the best description of a smoldering fire?
• To be involved in the combustion process, fuels must generally be in what state?
• What is a significant aspect of conducting a fire investigation?
• When evaluating evidence, what is a crucial factor to consider?
• Which gas is NOT typically released during a fire?
• How can flames produced during combustion be categorized?
• What is an interested party in the context of fire investigation?
• The strongest chain of custody has one link. What is it?
• What effect does a blast pressure injury have on an individual?
• What does the color white/light gray signify in wiring?
• Flame heights are classified into how many regions?
• What are fusible plugs?
• What are the common signs that indicate arson?
• Which types of fires are covered by the standards set forth in NFPA 1033?
• What is relative humidity?
• Which of the following would NOT contribute to the cause of accidental fires?
• Are temperature and heat interchangeable terms?
• How does a fire plume affect the pattern of a fire?
• What defines a thermal runaway condition?
• In fire investigation, what does "heat shadowing" imply?
• Improperly installed aftermarket equipment may lead to what issue?
• How does calcination occur?
• How does topography influence wildfires?
• What is the primary function of police fire investigators?
• What does the main disconnect provide in a service equipment system?
• Which of the following is NOT a form of information?
• Insulation or conductors in electrical systems primarily prevent what?
• What is an essential step before excavating debris from a fire scene?
• What does the Response Time Index measure?
• What might be a sign of heat exposure on exposed bones during a fire?
• What condition must photographs meet to be considered a true representation in court?
• What does amperage represent in electrical terms?
• What is the primary difference between protected areas and heat shadowing?
• What type of claims frequently result from fire incidents?
• When should a fire scene be thoroughly photographed?
• What is a firebrand?
• Which of the following is a potential source of evidence in a fire investigation?
• Marking arc sites will help illustrate what aspect during an investigation?
• What is an example of a reliable method for confirming gas leaks?
• Why is documentation of investigative notes crucial in fire investigations?
• What is the purpose of vaporizers in industrial applications?
• Where are cylinders most frequently used?
• What are manual initiating devices limited to?
• What is the first step if an investigator suspects the presence of a liquid?
• What is the flammable range of un-diluted propane?
• What contributes to the rapid increase in surface temperature of plastic foams?
• What must an investigator be able to recognize when dealing with evidence?
• Physical evidence can be characterized as what two types?
• Which factor is NOT typically considered in fire investigation?
• What is considered the single most important factor in survivability during a fire incident?
• Which of the following is NOT a factor influencing fire growth?
• What does weather history provide in relation to fire behavior?
• What are a few of the methods that can be used to collect samples of gaseous vapors?
• What results from the partial intersection of a cone pattern on both vertical and horizontal surfaces?
• What does the administrative review of an investigation lack according to standard critique procedures?
• Which of the following factors does NOT influence the effects of heat on a body?
• If the investigation reveals that fuel gas may be involved, the investigator should verify the ___.
• Which of the following is NOT one of the types of report reviews?
• Why is duff not a major influence on fire spread?
• What aspect of fire investigations does the term "initial scene assessment" refer to?
• Which of these is the formula for calculating power?
• What are common alert words associated with fire safety?
• What is vapor density defined as?
• What are the four major fuel groups identified for wildfire fuels?
• What term describes the rate of doing work in an electrical circuit?
• A right of entry for a fire investigation can be granted by which method?
• What is meant by "seismic effect" in the context of fire investigations?
• Which of the following is one of the oldest criminal offenses under the law?
• What is the primary concern when transporting physical evidence?
• What is the ignition temperature range of propane?
• How should all fire investigations be approached?
• Is it true that flames can transition from a premixed to a diffusion flame?
• How many standard firefighting orders exist?
• During every fire scene examination, the presence and condition of fuel gas systems need to be what?
• If an investigator chooses not to utilize NFPA 921, what must they be ready to do?
• Who provides guidance on methods for investigating fire and explosion incidents?
• A shut-off valve is primarily used for what purpose?
• Electrical power is typically measured in which unit?
• What indicates a proper investigation method?
• What is char?
• Which type of fuel typically requires the lowest energy to ignite?
• Which of the following is an example of available liquid fuels in vehicles?
• What is the main function of a pressure regulator in gas supply systems?
• What key understanding should an investigator have when interacting with interested parties?
• What aspect is crucial for understanding arc sites in fire investigations?
• What is the purpose of switches in fire safety systems?
• When collecting evidence from a wire, what should it reference?
• What is the function of a combustible gas indicator?
• What sources can provide relevant information related to a fire's origin?
• Why is hydrogen cyanide particularly concerning during investigations?
• What is the primary focus of a fire investigation?
• What terms describe individuals involved in three or more fire sets?
• Which of the following is a reason to monitor the atmosphere continuously at a fire scene?
• What is not granted to an investigator by the authority to investigate a fire?
• What can cause static electricity to accumulate?
• What type of evidence are fire patterns classified as?
• What is crucial for determining the cause of a fire?
• What is the potential consequence of toxins lingering after a fire?
• What is the only definitive method to demonstrate actual melting of steel?
• How is heat shadowing caused?
• What should every report an investigator completes include?
• What can happen to combustible metals upon ignition?
• What is a fuel load and why is it important to fire spread?
• This tool is used to facilitate the documentation of fire scene images:
• What determines the K-factor in sprinkler systems?
• Which factor influences the validity of char depth analysis?
• Can melting and vaporization be reversible processes upon cooling?
• What is the main focus of NFPA 921?
• What does an investigator risk if they do not adhere to safety protocols?
• What does cupping refer to in fire investigations?
• How does carbon monoxide typically enter the body?
• What can excessive overcurrent result in?
• Which of the following is NOT a primary factor that affects wildfire spread?
• ______________ are small, solid, powdery particles that extinguish the flame by covering the protected area of a fire.
• A(n) _____________ assumes a special role in the courtroom, testifying about personal knowledge and facts known before or at trial.
• What process involves the direct transfer of heat between objects in contact?
• True or False: Pure natural gas is lighter than air.
• Forensic and legal requirements mandate that evidence be:
• Which instrument can help indicate the percentage of lower explosive limit in a gas mixture?
• Surface fuels refer to flammable materials located at what height?
• Which of the following is NOT a basic function performed in fire investigations?
• What are the most common forms of demonstrative evidence?
• What describes an arc in electrical terms?
• Is it difficult to determine a fire's cause if the area of origin cannot be reliably identified?
• What is the definition of "snags" in the context of fire investigation?
• In fire investigation, what is the purpose of report reviews?
• What is the equation for calculating power in an electrical circuit?
• What is meant by a projected fragment effect?
• Which of the following is an example of an initiating device in fire investigation?
• What is meant by fuel source with the right air mixture in ignition context?
• What is the primary composition of commercial propane?
• Which of the following is considered an aftermarket item for vehicles?
• What is amperage?
• Where are pressure regulators typically attached?
• NFPA 1033 specifies minimum standards for which of the following?
• What is the primary use of LP gas?
• What is a diffusion flame?
• Why is the melting temperature of solid materials important to fire investigators?
• What is described as a reaction that travels through air at subsonic velocities?
• What are key components of a fire scene investigation?
• What is introduced when a window breaks or a door is opened during a fire?
• What can oxidation of non-combustible materials produce?
• What is the primary concern of any investigator on scene?
• How are V-patterns created?
• Which three branches make up the federal government?
• Which phenomenon refers to the intense heat radiation generated during an explosion?
• How is the size of fuel gas piping determined?
• Who should receive a full autopsy to determine cause of death in fire cases?
• What type of fire suppression system utilizes gas or chemical agents?
• In the context of fire investigations, what role does step 2 of the scientific method play?
• What is the first component of the fire tetrahedron?
• What is cured grass?
• What is the primary method of recording a scene?
• During what condition does radiation become the dominant means of heat transfer?
• An occupant's actions during an emergency are influenced by which of the following factors?
• What information can be found on a hydraulic data nameplate?
• Which of the following are the three states of matter?
• In fire investigations, what is the consequence of high ampacity?
• What should investigators document when they suspect an ignition source?
• Where do high voltage arcs typically exist?
• Dead leaves and coniferous litter are categorized as what type of material?
• What is the impact of fuel type on explosions?
• Which type of explosion results from a fire engulfing a bulk liquid?
• In investigations, components from an involved fuel gas system should be what?
• What is a common responsibility during a fire investigation?
• What is the role of an investigator when dealing with fire scenes?
• What has recently gained importance regarding evidence?
• What effect does moisture have on vegetation with respect to fire?
• What defines the area of origin in a fire investigation?
• What is the implication of the term "flashover" in fire dynamics?
• Why is an uninhibited chemical chain reaction significant in fire dynamics?
• Where can patterns created by full-room involvement typically be found?
• Which types of valves are commonly found in appliances?
• In terms of law enforcement, what does "probable cause" give them the right to do?
• Which of the following best defines electric current?
• What is an exemplar in the context of fire investigations?
• What does NFPA 1033 refer to?
• How can static electricity discharge occur?
• What does identifying the first points of failures or conductors help determine?
• What potential hazard can arise from an improperly operating engine regarding the exhaust system?
• Vehicle identification begins with which of the following?
• Area fuels are typically found at which height?
• What is a primary requirement for proving arson?
• When a conductor has been severed by an arcing event, what can be concluded?
• _______ circuits distribute the electricity from the circuit breaker or fuse panel throughout the building.
• What type of evidence is important for proving the intent in an arson case?
• What process must products such as wood and paper undergo to produce char?
• The rate of heat transfer is affected mainly by which factor?
• Where is public mode notification typically used?
• What type of environment might require specific coatings on sprinkler heads?
• What size wire is commonly applied to appliances such as electric ranges and dryers?
• What is often true about short-duration arcs?
• Propane has a specific gravity greater than which substance?
• Limited air for combustion primarily results in:
• What should fire investigators examine in smoke detectors and alarms?
• What are the key elements identified by OSHA for workplace safety?
• Why might a firesetter from a broken home engage in fire-starting behavior?
• What is arc mapping?
• What can contribute to the overload of a vehicle's electrical system?
• What are crowns in relation to trees?
• A hypothesis is an attempt to answer which step of the scientific method?
• The investigator should keep in mind that the point of the leak may be ______ from the actual damage.
• Which aspect is crucial for investigating fire dynamics?
• TRUE or FALSE: The complexity of the investigation dictates the detail of sketches, drawings, or data collection.
• What can severe charring patterns indicate in fire investigations?
• What is the term for when one type of metal falls onto another type?
• In a single phase system, what does the neutral conductor do?
• What is LP gas primarily composed of?
• A hypothesis must be supported by what?
• In fire investigations, what does the term "area of origin" refer to?
• What is the importance of collecting witness statements in a fire investigation?
• What is a method to detect anomalies along a conductor?
• What does cognitive testing evaluate in fire investigations?
• What characterizes low-order damage?
• What is the purpose of evidence collection in a fire scene investigation?
• What does Ohm's Law define?
• When should an additional regulator be installed in a fuel gas system?
• What happens to smoke particles as a fire grows?
• What type of meter measures electricity consumption at a site?
• Water-based sprinkler systems can be categorized into which of the following types?
• What might cause ignition of undercoating and interior carpet in a vehicle?
• What does the color of an electrical conductor typically indicate?
• How do smoke detectors function to detect smoke?
• Why is it essential to obtain samples properly during an investigation?
• The stoichiometric ratio is ________.
• What occurs to moisture in concrete when there is rapid heating in a fire?
• By what means is the authority to conduct a fire investigation granted?
• What role does a turbocharger play in modifying air intake?
• True or False: During the combustion process, multiple by-products are released.
• True or False: Most fuels must liberate fuel gases or vapors for ignition to occur.
• What is the first step in the scientific method?
• What is the common gauge size for household wiring?
• Which of the following describes the primary function of evidence collection in investigations?
• What are the two factors related to the visibility of arc damage?
• What are privileged communications?
• What is natural gas?
• Which of the following is NOT an organic fuel?
• An investigator should be able to recognize what indicators on a vehicle fire?
• What is a pressure relief valve classified as?
• In fire investigation, what does the term "origin" refer to?
• What is a fixed level gauge used for?
• What characterizes saddle burns?
• Where do the most common leakages in fuel gas systems occur?
• What is the definition of fire investigation?
• What device prevents damage to conductors during excessive current flow?
• What does the color green indicate in fire investigation wiring?
• Which type of smoke detector responds more quickly to smoldering fires?
• Sequential data provided by arc mapping can primarily assist in?
• What is the first step of the scientific method?
• What is the main purpose of using the NFPA standards?
• What is thermal inertia?
• What happens to the combustion process when there is insufficient air?
• What role does thermal imaging play in a fire investigation?
• Which weather conditions can exacerbate a fire's intensity?
• What role does visual representation play in scene investigation?
• A trailer is __________.
• What does arc mapping help an investigator determine?
• How can the presence of cupping be identified?
• What does fire dynamics study?
• Which organizations are fire investigators encouraged to join?
• What is a primary reason for maintaining a safe distance from the fire scene?
• Which of the following is NOT a generally recognized category of evidence?
• Which of the following is a critical element of fire investigation?
• What is physical evidence also referred to as?
• What role does an incident command system play in a fire investigation?
• Grass and weeds influence fire spread mainly based on what factor?
• What is the weight of water per gallon?
• What can be deduced about the standard methods of communication in investigations?
• What does a third degree burn typically result in?
• Why is it important to consider all relevant data in fire investigations?
• Should speculative data be included when creating a hypothesis?
• What system has proven to be highly effective for early occupant notification during a fire?
• What does larger wire indicate regarding current capacity?
• What is the role of transformers in fire investigations?
• Why should investigators be cautious about witness statements regarding fire growth?
• Which serious outcome is commonly linked to spontaneous human combustion?
• What does the term 'slope aspect' refer to?
• What type of injury is shrapnel associated with during an explosion?
• What is an example of defining the problem in the scientific method during a fire investigation?
• What burns are characterized by damage to underlying tissues?
• What happens when a component is removed from the fire/combustion process?
• If a fuel is below the lower explosive limit or above the upper explosive limit, what is the combustion state?
• Which type of data should be included for identification on a tag or package of physical evidence?
• What can happen to rock and soil when exposed to higher temperatures?
• What is typically the primary goal of the fire investigation process?
• When do NFPA documents hold legal power?
• TRUE or FALSE: Failure to consider the growth and spread of a fire can lead to incorrect conclusions.
• What should be done before moving a deceased body found in a fire?
• What defines an incendiary fire?
• How does a remote supervising station fire alarm system operate?
• What allows entry onto property to suppress a fire when reported?
• What must physical evidence be to be admissible in court or other proceedings?
• What are the degrees of burns defined as?
• Which of the following is NOT a characteristic of blow holes?
• What is the importance of heat in an exothermic reaction?
• What behavior is often associated with adolescent firesetters aged 14 to 16?
• LP gas distribution systems have a difference from natural gas systems in that:
• What is a primary cause of severe fire damage to structures?
• What is the purpose of analyzing fire incident data?
• What does isochar represent?
• What defines a 'total burn' at a fire scene?
• What does the term "flashover" refer to in fire science?
• What causes static electricity to build up?
• What are the two basic types of fire patterns?
• Which of the following can be a result of combustible materials near heaters?
• Which of the following is a natural means that can cause multiple fires?
• TRUE or FALSE: The presence of the rainbow effect at a fire scene is a reliable indicator of an ignitable liquid being present.
• What does a fire investigator do after determining the area of origin?
• A copper conductor's melting temperature may be affected by ______.
• What is defined as any current in gross excess of the rated current of equipment?
• What kind of evidence can an eyewitness provide in the absence of physical evidence for establishing origin?
• What is the first step in assessing hazards and risks?
• Pointer and arrow patterns are important for what reason?
• If you're not qualified to analyze vehicle systems, what should an investigator do?
• In fire investigations, what is the significance of a model?
• Why do metals increase in surface temperature slowly?
• Which scientific method step involves analyzing data?
• What impact does overheating have on combustible fluids in a vehicle?
• The reaction between oils, fats, and dry chemical agents is called __________.
• What are typically employed as overcurrent protection devices in appliances?
• What requirement must fact witnesses meet to testify?
• What defines a meter base in electrical systems?
• What is a three-phase system in electrical contexts?
• How is fire best described?
• Which of the following is an example of a non-seated explosion?
• PVC can become brittle due to:
• TRUE or FALSE: The relationship in space of the arc sites is significant evidence.
• What is one critical element to consider when discussing hazards at a site?
• What is an affidavit?
• Which of the following represents one of the standard fire orders?
• A premixed burning flame occurs when:
• What does the acronym ICS stand for in fire investigations?
• Which type of fuel injection system is commonly found in modern vehicles?
• Which of the following is a common known fuel package?
• Should an investigator only focus on proving a hypothesis?
• What can burners that have been turned on but not lit provide?
• What is a fire storm?
• What is a common reason for juvenile firesetting?
• How do many circuit breakers function?
• At what internal temperature do catalytic converters usually operate?
• What does a weatherhead prevent from entering the electrical conduit?
• TRUE or FALSE: All compartment fires will evolve to a flashover stage.
• What do smoke detectors primarily rely on to initiate an alarm signal?
• What does thermal conductivity influence?
• Which OSHA standard utilizes a lockout/tagout device that can disable equipment?
• What does probable cause allow law enforcement to do?
• The determination of origin begins with which process?
• Who should be kept at a safe distance from the fire scene?
• What is deductive reasoning?
• What is affected by the thermal conductivity of an object?
• At what skin temperature does pain generally start to result?
• What specific component is crucial to document when investigating fire incidents related to alarms?
• What is the likelihood of an accidental fire occurring after a vehicle theft?
• Children in which age group are classified as child firesetters?
• What is the common visual representation of an inverted cone pattern?
• What is a hybrid vehicle?
• What type of circumstances involve permission to take action during a fire?
• What do most interior seats and padding provide in a vehicle fire?
• What is the result of an electric spark caused by static electricity?
• What happens to air when it is dry?
• Which of the following is NOT considered an incendiary device?
• What is typically impacted by heat transfer in wildfires?
• What is defined as a means of analysis used by researchers in the sciences?
• What could be an issue if aftermarket equipment is added to a vehicle without proper installations?
• What minimum percentage of commercial butane is typically composed of butane and butylene?
• For photographs to be admissible in court, they must meet which criteria?
• What unique identification is required by the NHTSA for RVs?
• What are fulgurites?
• How should the investigation process of a vehicle be divided?
• What is a common method of investigating fire incidents?
• What term describes upright containers for gases or liquids?
• Heat naturally moves from areas of:
• A tank is defined as a storage container with greater than how many gallons water capacity?
• What is the purpose of the Freedom of Information Act?
• Static electricity can be generated by the movement of which substance?
• What is the primary reason experts must stay current according to NFPA 1033?
• Flame spread in a fire context refers to:
• What is a common physiological effect of heat exposure on muscles?
• Which type of flame is known for consuming most fuels?
• What is an administrative search warrant designed for?
• What role do pilot lights and open flames from appliances often play in fire situations?
• What terms describe factors that may hinder or aid in wildfire suppression efforts?
• What should be the first priority before examining electrical equipment?
• What does cross-contamination refer to in fire investigations?
• Before investigating a vehicle, what condition should investigators assess?
• What should an investigator consider when evaluating witness statements?
• What emotional condition is often linked to juvenile firesetting?
• What is one key factor when assessing a fire's behavior?
• What defines the categories of ignition sources?
• What qualifies as a solid fuel within or on a vehicle?
• Which actions can significantly alter fire patterns?
• What is defined as the zone inside a sealed evidence can, between the top of the fire debris and the bottom of the lid?
• What does the term 'flashover' refer to in fire dynamics?
• What do fused links or circuit breakers prevent in a vehicle's electrical system?
• What aspect of an investigation can be thoroughly examined during legal proceedings?
• Which of the following best describes fuel gas?
• Which compounds may be found in blood due to fire exposure?
• Where are linear fire patterns usually found?
• What type of pattern can indicate the direction of a fire's origin?
• True or False: An investigator should always assume that the point of greatest damage was where the fire burned the longest and therefore is the origin.
• TRUE or FALSE: Fingerprints usually disappear from surfaces after a fire.
• Once the origin of a fire is identified, what should the investigator determine next?
• What is a smoke alarm?
• Why is arcing described as brief and localized?
• The primary purpose of fire investigation is to ______.
• In fire investigations, what is the significance of identifying the area of origin?
• What is the maximum water capacity for cylinders?
• Arc mapping is based on which principle?
• What unit is electrical power measured in?
• What happens to engine oil, power steering fluid, and brake fluid when in contact with heated exhaust components?
• What does it mean when a material undergoes thermal decomposition?
• What is the primary function of an air sampling smoke detector?
• What does the inability to identify the point or area of origin not preclude?
• What is a common ignition source associated with resistance heating?
• What is expectation bias in the context of an investigation?
• What should investigators aim to achieve with arc mapping?
• What is the common penalty for most arson offenses?
• What is the purpose of a photo log in fire investigation?
• What does distortion or deformity of an object indicate in terms of temperature?
• What types of toxins are typically found at fire scenes?
• A protocol should be _________ and ________ to interested parties.
• The difference between flame spread and fire spread is:
• Beneath what percentage of oxygen does impairment of motor and mental skills begin?
• In a fire alarm system, what is the role of initiating devices?
• What is OSHA and why is it important?
• What is an AFCI?
• What role does a generator or battery play in an electrical system?
• What does real evidence refer to in the context of court proceedings?
• Why are crowns considered significant in fire investigations?
• Overcurrent protection devices can be categorized as?
• What is a pressure relief valve designed to do?
• Which of the following are considered the three primary components of a fire alarm system?
• What is typically insufficient energy to ignite most higher density combustibles?
• What does grounding refer to in electrical systems?
• Which NFPA standard clarifies the competencies of EMS personnel during hazardous incidents?
• What should be worn when ventilation cannot reduce the amount of toxins on scene?
• How is the diameter of a wire commonly measured?
• Which OSHA standard addresses safety aspects related to confined spaces?
• What fuels burn without the production of smoke?
• What does the "rainbow effect" refer to in fire investigations?
• Which amendment affords the right to counsel in legal settings?
• A fire scene is authorized as part of what type of circumstance?
• What are some physical signs that may indicate someone is lying?
• According to NFPA 1033, what is required of fire investigation experts?
• Visible fire effects should lead investigators to identify what?
• What are the two most common fuel gases used within a structure?
• What is the primary purpose of documenting an interview conducted by an investigator?
• What does GFCI stand for?
• What consequence can result from a gas leak originating underground?
• What must occur for combustion to take place?
• What is defined as a column of hot gases, flames, and smoke rising above a fire?
• What is convection primarily associated with?
• Why is it important to document an interview properly?
• What is the primary purpose of determining the origin of a fire?
• When a single hypothesis cannot be determined, what term is used to describe it?
• What factors should an analysis be based on?
• An active fire alarm system can provide the fire investigator with:
• What phenomenon describes acoustic soot agglomeration?
• Like other analytical tools, arc mapping is useful for ___________.
• Why is understanding COHb levels important in fire investigations?
• Which of the following is a component of the three-step hazard assessment process?
• In the context of fire investigations, which fluid types are primarily focused on?
• What are the three most commonly used conductors?
• True or False: Only one hypothesis should remain after testing all origin hypotheses for an investigator to select it as the final hypothesis.
• Where will fire patterns primarily develop?
• Why is documentation critical in fire investigations?
• Which of the following describes U-shaped patterns in fire investigation?
• What happens to the skin when exposed to high temperatures in a fire?
• How does conduction occur in fire scenarios?
• Why is determining the role of furnishings important in a fire investigation?
• What issue can arise from labeling an "irregular pattern" based on visual appearance alone?
• What is required to establish a single phase system?
• How does an ionization smoke detector function?
• In fire investigations, one should work from which area to which area?
• When another investigator reviews your report, what should they ideally be able to do?
• When dealing with fuel gas systems, it is recommended that the investigator seek _____.
• What does the flammable range refer to in fire investigation?
• What does the term "pugilistic attitude" describe?
• If the electronic control module remains undamaged by fire, what can a technician do?
• What is typically the first step after a fire has been extinguished during an investigation?
• What is an example of indirect evidence in fire investigation?
• How is an accidental fire characterized?
• Which of the following are units of electricity?
• Negligence is best defined as what?
• What does voltage drop refer to?
• What systematic approach is utilized by investigators?
• Why are undeployed airbags considered a safety hazard?
• A deposition is __________.
• What is a required addition to LP gas and commercial natural gas by law?
• Which of the following is an example of documentary evidence?
• What does NFPA 921 provide for fire investigations?
• What characterizes high-order damage?
• What should be monitored closely during fire suppression efforts?
• True or False: Toxins remain in the air after a fire has been extinguished.
• What can cause hazardous overheating in electrical equipment?
• What are shiny char blisters on a burned surface called?
• What impact does the LEL and UEL have on combustion?
• Which materials are most often used to construct gas mains and services?
• Starting after 1970, what was modern carpet manufactured in the US required to do?
• Which NFPA standard pertains to low-rise residential occupancies?
• What should investigators do if they suspect the presence of hazardous materials?
• How would you best define the chemical reaction of fire?
• When evaluating surface fuels, what specific characteristic should be noted about dead leaves?
• Juvenile firesetters are ________.
• True or False: An investigator should work alone during any fire scene examination.
• Which gas is heavier than air?
• Which characteristic describes wildland V-shaped fire patterns?
• What defines a total burn at a fire scene?
• What is the role of the lab in evidence transport?
• What does RTI stand for in fire investigation?
• What type of questioning allows a witness to provide a narrative response?
• What is smoke and how is it created?
• True or False: If fuel packages are located in the corner of a room, the flame height will not increase.
• What is the first step in identifying collected physical evidence at a fire scene?
• Which element is essential for the combustion process in a fire?
• True or False: In some designs, the pilot light burns consistently, while in other designs the burner is ignited electronically.
• If a civil or criminal matter is not settled, what is the next step?
• What defines confidential communications in a legal context?
• What happens to the mass of an object when it is consumed during combustion?
• How are depth measurements plotted?
• Should an investigator consider the location of fuel packages?
• Which of the following is a method of standard communication in fire investigations?
• In wire gauge, what does a smaller AWG number indicate?
• What is a common consequence of compromised fuel containment systems?
• What distinguishes a V-shaped pattern from a U-shaped pattern in fire investigation?
• What is the primary characteristic of a flashover in a fire scenario?
• What are the two basic fuel systems utilized in gasoline-powered vehicles?
• Class A foam is characterized by having a lower what?
• What are spot fires?
• What type of signal indicates a problem within the fire alarm system?
• Which of the following does NOT qualify as physical evidence?
• Comparison of char depths should only be made on what basis?
• Which type of buildings primarily use combustible materials?
• What should an investigator do continuously through sifting, reconstruction, and evidence examination?
• What condition does hyperthermia describe?
• Which term describes a combustion reaction that propagates at supersonic velocities?
• What is crucial when managing the overhaul process in fire investigations?
• What is the most frequent cause of fuel involvement in fires?
• What is oxidation in relation to combustion?
• Which of the following can be used as points of reference when writing a report?
• Fuel elements in models are primarily grouped based on which of the following characteristics?
• What does heat transfer refer to in fire investigation?
• According to ANSI Z 535.4, what does a "warning" label indicate?
• What is the primary source of electrical energy in a vehicle that is not running?
• Which type of flame is considered the upper region of the flame?
• Where are turbochargers typically located within an engine?
• During a fire investigation, why is it important to document the scene surrounding a vehicle?
• Which type of explosion is typically characterized by the rapid expansion of gases?
• What happens to concrete, brick, and masonry items when heated?
• What is the significance of recognizing changes in gypsum wallboard during a fire investigation?
• What does it indicate if the K-factor value is high?
• What is essential to assess when examining fire patterns?
• What component can contribute to the ignition of a gas fire?
• True or False: Rapid fire growth is a reliable indicator of an incendiary fire.
• In legal terms, who is considered a defendant?
• What is referred to as the service entrance in electrical terms?
• Which condition must be satisfied for a fire to ignite from electrical failures?
• What is a turbocharger?
• What should a fire investigator always be aware of on a scene?
• Why is it essential to consider alternative hypotheses in investigations?
• An increase in visible products of combustion is most likely due to:
• Protocols in fire investigations need to be flexible enough to allow for what?
• What is the primary function of a turbocharger in an engine?
• Why do electrical systems in hybrid or electric vehicles pose an increased shock hazard?
• Which of the following is an example of an organic fuel?
• What are the most common types of pressure regulators?
• A circuit that does not contain inductance and capacitance is a ____________.
• What are RVs often used for with natural gas or LP gas systems?
• Data collection in fire investigations includes which of the following?
• Which phenomenon has received significant attention related to fire studies?
• What does depth of calcination analysis measure?
• In hypothesis testing, what does "timeline" refer to?
• What is a key property of effective insulation materials in fire scenarios?
• Under which US constitutional amendment must every entry onto a fire scene be justified?
• Which of the following are considered common examples of physical evidence?
• What are the minimum requirements by NFPA 1033 to be a fire investigator?
• What is a characteristic of an arc?
• The role of a fire investigator includes ______.
• Where is a water flow switch found and what is its purpose?
• What action should be taken to ensure reliable witness testimonies?
• When fire damage is inconsistent with the fire load, what is the appropriate action?
• What is the primary characteristic of insulation materials?
• What is a consequence of having higher conductivity in metals?
• Which of the following is a common gaseous fuel found in motor vehicles?
• True or False: Evidence technicians require special training to perform their duties properly.
• What role does an odorant play in gas investigations?
• What are the conditions necessary for static arc ignition?
• In terms of fire investigation, understanding electrical failures is crucial for identifying:
• What is a potential ignition source from overloaded wiring?
• What step in the scientific method typically involves inductive reasoning?
• What are fire patterns primarily characterized by?
• Before conducting a vehicle fire investigation, an investigator should prepare by gaining knowledge about what?
• What issue can arise from high pressure fuel injection systems?
• What does HRR stand for in fire science?
• How is humidity typically expressed?
• When documenting an over-current protection device, which of the following is important?
• What are the four ways that lightning can enter a structure?
• What is the nature of direct current (DC) in electrical terms?
• How does radiation occur in the context of heat transfer?
• What is a critical factor in the legal admissibility of photographs as evidence?
• What type of electrical line do RVs typically have?
• In fire investigations, identifying areas of origin helps in?
• Which of the following conditions could lead to a backdraft?
• What can result from the disassembly of evidence in an investigation?
• Which of these is an important factor when creating a protocol?
• Where should a pure ignitable liquid sample never be placed?
• Which of the following is necessary to evaluate the presence of multiple heat sources?
• What characteristic distinguishes gas flows in fire investigations?
• What is expectation bias?
• What can the measurement of heat flux indicate?
• Where is a doughnut-shaped pattern typically found during a fire investigation?
• When burned, thermoplastics do not produce which of the following?