Complete Solutions
3 phases of combustion Correct Answers 1) pre ignition phase
no flame present
Physical change- water is dried out by the fuel
chemical change
2) Ignition phase
a self sustaining flame is made
3) Combustion phase
fuel is consumed by flames
A clean un-burned area is known as? Correct Answers A
protected area.
A natural gas explosion will damage what part of a structure?
Correct Answers The upper levels, natural gas is lighter than air
and it rises.
Absence of CO2 in the blood stream of a body located in a fire
scene may indicate what? Correct Answers The person was
dead prior to the fire.
Accidental Event Correct Answers Those actions or inactions
not intended or designed to cause, or allow to be caused, a fire
or fire related incident.
AFIS Correct Answers fingerprint data base
,AHJ Correct Answers Authority Having Jurisdiction
Air Entrainment Correct Answers The process of air or gases
being drawn into a fire, plume or jet
Alternating Current VS Direct Current Correct Answers
Alternating current - the electrons flow out from the source and
then back to it, alternating directions.
Direct current - electrons flow one way.
Alternating Current VS Direct Current Correct Answers
Alternating current - the electrons flow out from the source and
then back to it, alternating directions.
Direct current - electrons flow one way.
Aluminum melts at what temperature? Correct Answers 1220
Degrees
An over-pressurization of a container is an example of what type
of an explosion? Correct Answers Mechanical.
Anoxia Correct Answers lack of oxygen
Any information obtained during an interview must be? Correct
Answers Evaluated and checked for accuracy.
Any information released to the public must be? Correct
Answers Accurate and reliable.
arson Correct Answers the criminal act of deliberately setting
fire to property
,asphyxia Correct Answers condition caused by insufficient
intake of oxygen
At what temperature do light bulbs begin to swell or distort?
Correct Answers At 900 degrees for 10 minutes
Autoignition Temperature (AIT) Correct Answers The lowest
temperature at which a gas-air mixture will ignite in the absence
of an ignition source.
Back Draft Correct Answers a type of explosive ignition that
occurs when a smoldering fire is exposed to a fresh supply of
oxygen
Backdraft Correct Answers The explosive burning of heated
gases that occurs when oxygen is introduced into a compartment
that has a high concentration of flammable gases and a depleted
supply of oxygen due to an existing fire.
Beveling Correct Answers A fire pattern that indicates fire
direction on wood wall studs. It leans toward the direction of
travel.
Blistering Correct Answers usually means the victim was alive
at time of fire
Boats that are powered by gasoline have similar fuel systems to
cars. What are the two main gasoline fuel systems? Correct
Answers High pressure - fuel injected
Lower pressure - carbuerated
, ALSO: Some boats are diesel, or even electric ONLY
Calcination Correct Answers Process in which chemically
bound water is driven out of gypsum by the heat of the fire.
Calcination of Gypsum Correct Answers A fire effect realized
in gypsum products, including wallboard, as a result of exposure
to heat that drives off free and chemically bound water.
Carbon monoxide Correct Answers 240 times the affinity to
hemoglobin
carbon monoxide Correct Answers a colorless, odorless, and
poisonous gas
Carbon monoxide poisining causes what color of the skin?
Correct Answers Cherry-pink
Carbon monoxide poisining causes what color of the skin?
Correct Answers Cherry-pink
Ceiling damage should be how much greater than floor damage?
Correct Answers 70 to 80 % greater
Ceiling Jet Correct Answers A relatively thin layer of flowing
hot gases that develops under a horizontal surface as a result of
plume impingement and the flowing of gas being forced to move
horizontally