Shared Flashcard Set

Details

VFA XVI Fire Behavior and Combustion
Class XVI Block 1 updated 2/2/13
25
Other
Professional
01/23/2013

Additional Other Flashcards

 


 

Cards

Term
4 Types of Heat Measurement
Definition
1. Celsius
2. Kelvin
3. Fahrenheit
4. Rankine
Term
What is the normal percentage of oxygen in the air?
Definition
21%
Term
What are the 3 basic factors required for combustion?
Definition
Fuel, Oxygen and Heat
Term
What are the 4 components of the fire tetrahedron?
Definition
1. Reducing Agent (fuel)
2. Oxidizing Agent
3. Heat
4 Chemical Chain reaction
Term
Turbulent smoke is an indication that what will occur soon?
Definition
Flashover
Term
What class of fire involves ordinary combustibles such as wood and paper?
Definition
Class A
Term
What state must a fuel be in for combustion to take place?
Definition
Vapor only
Term
What is the term for the lowest temperature at which a liquid produces a flammable vapor?
Definition
Flash Point
Term
What makes a fire a Class C fire?
Definition
Energized electrical equipment
Term
As a solid fuel heats up, it decomposes and releases individual molecules into the atmosphere. What is this process called?
Definition
Pyrolysis
Term
What is one warning signal of possible backdraft conditions?
Definition
Glass that is smoke-stained and blackened due to heavy carbon deposits from the smoke.
Term
Will a gas with a vapor density of 2.6 rise, fall, or have neutral buoyancy in air?
Definition
Fall
Term
What is one of the toxic gases often present in smoke?
Definition
Hydrogen Cyanide
Term
What term refers to the weight of a gas compared to air?
Definition
vapor density
Term
What is the term for the transfer of heat in a material directly from one molecule to another?
Definition
Conduction
Term
As electricity flows through a wire, what relationship, if any, is there between the resistance in the wire and any heat produced by the current?
Definition
The greater the resistance, the more heat is produced
Term
In what direction does radiated heat energy from a fire travel?
Definition
In all directions
Term
What is the transfer of heat energy in the form of invisible waves called?
Definition
Radiation
Term
What is an endothermic reaction?
Definition
One that absorbs heat
Term
What is the vapor density of air?
Definition
1.0
Term
What danger is suggested by the observation of smoke puffing in and out of a structure?
Definition
The presence of backdraft conditions
Term
What type of oxidation is combustion?
Definition
Rapid
Term
What phase of fire is introduced by flashover?
Definition
Fully developed phase
Term
What is the fire phase called when the fire has consumed either the available fuel or oxygen and is starting to die down?
Definition
Decay phase
Term
Name the 4 Stages of Fire.
Definition
Incipient, Growth, Fully Developed and Decay
Supporting users have an ad free experience!