FIRE DYNAMICS
What model includes the chemical chain reaction to explain the combustion of fire?
fire tetrahedron
T or F, ventilation operations must be coordinated with fire suppression crews?
True. Without coordination fire conditions can worsen.
What building construction type is a light-weight, wood-frame structure?
Type V
What is the internal diameter of a 2 1/2" hose?
2 1/2 inches
base of the window sill
Two surfaces rubbing together creates friction, which generates what?
mechanical energy
A positive pressure fan inside a structure is an example of what types of ventilation? Mechanical or natural AND horizontal or vertical?
mechanical horizontal ventilaztion
What building construction type is ordinary construction?
Type III
couplings
folding hooks as a means of anchoring the ladder
What is the term for control of air and smoke through a structure?
flow path
List an action that disrupts flow path control?
breaking or opening windows/doors unnecessarily
What feature of type IV construction helps prevent unseen fire travel?
lack of voids or concealed spaces
What is the higbee cut?
A notch on the coupling that allows threads to placed inline.
Name a reason that a ladder should be placed out of service.
Exposure to high heat, direct contact with flame, heat sensor color change, or failing an annual test
Vaporize
When using positive pressure ventilation in a multistory building, it is best to start on what floor
ground level (lowest point first)
What type of wall often obstructs firefighter's view of the entire roof?
parapet walls
What is hard suction hose used for?
drafting
The method chosen when removing a victim down a ladder depends on what?
if the victim is conscious or unconscious
fuel-limited
What is the purpose of kerf cut?
It reveals the presence of smoke or flame. It does not provide ventilation.
Why are fires in basements more hazardous than fires in other compartments?
There is limited means of ingress/egress and firefighters can find themselves unknowingly above the fire.
What is maximum recommended gallons per minute for a handline?
350 gpm
What must be in the locked position before adjusting or climbing an extension ladder.
the dogs (high and low, if applicable)