Ordinary combustibles (wood, paper, grass, etc) are considered this class of fire.
Class A
A majority of firefighter deaths are caused by______.
Cardiac/ Stroke Complications
What is the normal concentration of oxygen in ambient air?
21%
What class of fire is most commonly fought by using water only, to suppress the flames?
Class A
There are _____ standard use SCBA packs on Engine 33.
6
Class ABC fire extinguishers are the most common extinguisher. Flammable liquids or gas are classified as this class.
Class B
What is the primary indicator of the point of origin in a structure fire?
Burn pattern on the wall
____ is the removal of super-heated toxic gases and smoke by allowing it to take its natural traveling path.
Vertical Ventilation
Oxygen, Heat, Fuel and Chemical Reaction make up this.
Fire Tetrahedron
There are _____ spare oxygen bottles on Engine 33.
7
IDLH is short for...
Immediately Dangerous to Life & Health
____ is described as the total amount of combustible material in a confined space.
Fuel Load or Fire Load
A fire cannot be considered fully extinguished until _____ is complete.
Overhaul
This is when a fire has burned out most of the oxygen in a space and then oxygen is explosively reintroduced.
Backdraft
This must be done when driving with lights and sirens when approaching an intersection.
Clear/Clearing
______ is a pressure surge or wave caused when a fluid in motion is forced to stop and change direction suddenly?
Water Hammer
Defensive firefighting operations are conducted from which locations?
Exterior
This is the "rapid" search of an area to find viable victims during an emergency scene
Primary Search
Firefighters are not permitted to enter a dangerous location alone. This term is commonly used to describe the protocol for such situations.
Two-in, Two-out
Gas Detector & AED
A fire that uses electrical components and/or energized equipment as its fuel source is described as what class of fire?
Class C
Which gas is most commonly produced by residential or commercial fires?
Hydrogen Cyanide
What does it mean if a firefighter advises that the fire hose is charged?
The hose id pressurized and ready for use.
NFPA is the abbreviation for...
National Fire Protection Association
This is the gallonage of Engine 33
750