The term "scientific method of fire investigation" means: -Answer use scientific logic.
________ is the most critical component of ordinary fires, because it is essential for combustion. -Answer Oxygen
To understand chemical combinations, it should be understood that every atom consists of ...
fire investigator final Exam With Correct
Answers The term "scientific method of fire investigation" means: -Answer use scientific logic.
________ is the most critical component of ordinary fires, because it is essential for combustion. -Answer Oxygen
To understand chemical combinations, it should be understood that every atom consists
of a central core of subatomic particles called ________ and ________. -Answer protons; neutrons
An example of an element is: -Answer All of these.
The chemistry of carbon-containing compounds is called: -Answer organic chemistry.
To be a successful fire investigator, ________ must be understood. -Answer All of these
A(n) ________ can occur when vapors, dust, or gases are premixed with an appropriate
amount of air. -Answer explosion combustion
________ is the ignition of the hot gas layer. -Answer Flameover
The most fundamental and important property of fire is: -Answer heat
Today's fire investigator must: -Answer All of these.
An exothermic reaction is: -Answer heat-producing.
A smoldering combustion can continue even in an oxygen-deficient atmosphere below: -
Answer 5%.
Virtually all commercial petroleum fuels associated with fires are considered to be: -
Answer mixtures
The fundamental property of vapor that predicts its behavior when released into air is its: -Answer vapor density.
________ flames are small flames that are associated with candles, and the zones of high fuel concentration, dissociation (reducing), mixing, and combustion are well defined
in layers. -Answer Laminar
The most important fuels from the standpoint of an investigator are: -Answer hydrocarbons Which of these gases produces an asphyxiating effect? -Answer Carbon monoxide
Incendiary fires are classified as: -Answer both those that are set to destroy and those that are set intentionally.
The atom is the smallest unit of an element that takes part in a chemical reaction. -
Answer t
Most of the destructiveness caused in a fire is the result of: -Answer heat
Direct flame contact is a combination of both ________ and ________ mechanisms. -
Answer convective; radiative
The proportions of fuel, oxygen, and final products are called the ________ of the reaction. -Answer stoichiometry
When an ignitable liquid is poured or spilled, only its ________ are combustible. -
Answer vapors
The National Fire Incident Reporting System (NFIRS) changed its categories in 2003, eliminating the term(s) ________ fires. -Answer suspicious
Most explosions occur during the ________ phase of a fire. -Answer first
Failure of a fluid-filled container due to overpressure caused by a source of extreme heating is often called a: -Answer BLEVE
One interesting property of dense vapors is their propensity to flow: -Answer horizontally
When it comes to incendiary fires, it is the responsibility of the investigator to: -Answer All of these.
The amount of heat produced by a fire or any heat source can be measured in what unit
of measurement? -Answer All of these
In general, experts will normally use which of the following major sources of information on which to base their opinions? -Answer All of these
A smoldering fire is characterized by the absence of ________ but the presence of very hot materials. -Answer flames
The amount of heat any fuel can produce when burned is called its heat of: -Answer combustion
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