Chapter 1 Flashcards
What are class A fires?
Ordinary combustible materials
Wood, paper, textile, etc
Class A fire extinguishers are marked with?
Green triangle containing letter A
What are class B fires?
Flammable liquids, combustible liquids, petroleum, greases, tars, oils
Class B fire extinguishers are marked with
Red square with letter B
What are class C fires?
Energized electrical equipment
Class C fire extinguishers are marked with?
Blue circle containing letter C
What are class D fires?
Combustible metals
Aluminum, magnesium, titanium, sodium, and potassium
Class D fire extinguisher are marked with
Five point yellow star containing letter D
What are class K fires?
Vegetables oils, animal oils, or fat in cooking appliance fire
Class K fire extinguisher is marked with?
Marked with letter K or a black hexagon containing letter K
Heat is generated when a combustible material comes in contact with ___
A heat source
What are the 3 ways heat travels and causes a fire to extend?
Conduction, convection and radiation
Conduction is?
Heat transferred by conduction through contact of material
Heat that is conducted by a gas or liquid
Convection
Heat from a fire is _____ in all directions, including back toward the fire, which helps accelerate the chain reaction process
Radiation
What are the 5 stages of fire?
- Ignition
- Growth
- Flashover
- Fully developed
- Decay
The flashover stage is the transition between the ___
Growth stage and fully developed stage