Fire Behavior and Combustion Principles Flashcards
6 cards from real F80 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Fire Behavior and Combustion Principles flashcards as text
Class K fires involve which type of fuel?
Answer: Cooking oils and animal fats at high temperatures
Class K fires involve cooking oils and animal fats, typically encountered in commercial kitchen environments at high cooking temperatures.
Which heat transfer method involves direct physical contact between two materials?
Answer: Conduction
Conduction is heat transfer through direct physical contact, such as heat traveling along a metal pipe or structural beam.
What stage of fire development is characterized by diminishing flames and reduced intensity as fuel is consumed?
Answer: Decay stage
The decay stage occurs when available fuel is nearly exhausted, causing the fire to diminish in intensity and size.
What is the flash point of a flammable liquid?
Answer: The lowest temperature at which it produces enough vapor to flash briefly when an ignition source is applied
Flash point is the lowest temperature at which a liquid generates sufficient vapor to momentarily flash when exposed to an ignition source, though it will not sustain burning.
What type of smoke color typically indicates incomplete combustion in a petroleum-based fuel fire?
Answer: Black or dark gray smoke with unburned carbon particles
Black or dark smoke indicates incomplete combustion, with unburned carbon particles present due to insufficient oxygen — common in petroleum-based fires.
What is the term for the minimum temperature at which a liquid produces vapor fast enough to sustain continuous burning (not just flash)?
Answer: Fire point
The fire point is the minimum temperature at which a liquid produces sufficient vapor to sustain continuous combustion after the ignition source is removed.