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 Fire Protection and Arson Investigation Review Questions 1

(Answers are provided below)


1. In a fire scene investigation, what is the term used to describe the thermal decomposition of solid organic materials through heat in the absence of oxygen, which precedes actual combustion?

A. Oxidation

B. Pyrolysis

C. Flashpoint

D. Spontaneous combustion


2. What is the minimum temperature at which a liquid gives off vapor sufficient to form an ignitable mixture with air near the surface of the liquid?

A. Flash Point

B. Fire Point

C. Ignition Temperature

D. Boiling Point


3. An arson investigator locates a distinct V-pattern on a wall near the floor. What does the bottom apex of this V-pattern typically signify to the investigator?

A. The exact location where an accelerant was stored

B. The point of origin of the fire

C. The area where the fire was extinguished

D. The presence of a mechanical trailer


4. Which class of fire involves energized electrical equipment, where the electrical non-conductivity of the extinguishing media is of utmost importance?

A. Class A

B. Class B

C. Class C

D. Class D


5. What is the malicious use of a secondary fire, a delayed timing device, or multiple independent points of origin called when used by an arsonist to ensure the total destruction of a property?

A. Plant

B. Trailer

C. Accelerant

D. Incendiary device


6. During which stage of a fire is the oxygen content in the room still relatively normal (around 21%), the temperature has not yet peaked, and the fire is localized to the initial fuel source?

A. Incipient stage

B. Free burning phase

C. Smoldering phase

D. Flash over


7. In this phase of fire development, convection and radiation cause the temperature in the upper regions of the room to rise rapidly, ambient room temperatures can exceed 700°C, and unburned combustible gases accumulate at the ceiling level. Which phase is this?

A. Incipient stage

B. Free burning phase

C. Smoldering phase

D. Flash over


8. What is the transitional moment in a compartment fire where all the exposed combustible surfaces within the enclosed room simultaneously ignite, shifting the fire from a fuel-controlled state to a ventilation-controlled state?

A. Incipient stage

B. Free burning phase

C. Smoldering phase

D. Flash over


9. If a fire consumes most of the available oxygen in a tightly sealed room, the flames will die down, leaving heavily concentrated, superheated combustible gases and dense smoke. What is this oxygen-depleted stage called?

A. Incipient stage

B. Free burning phase

C. Smoldering phase

D. Flash over


10. An arson investigator enters a burned structure and notices heavy soot deposition on the windows, a tight pulse of smoke pushing out of small cracks, and highly pressurized dark smoke. These are classic indicators that the fire has entered which specific stage?

A. Incipient stage

B. Free burning phase

C. Smoldering phase

D. Flash over


Vice and Drug Education Reviewer


Answer:

1. B

2. A

3. B

4. C

5. A

6. A

7. B

8. D

9. C

10. C