Firefighter 1 & 2 questions and answers

Firefighter 1 & 2 questions and answers what is the fire triangle? oxygen, fuel, and heat what is the fire tetrahedron? oxygen, fuel, heat, and a self-sustained chemical chain reaction what is potential energy? stored energy possessed by an object that can be released in the future to perform work what is kinetic energy? the energy possessed by a moving object what is the british thermal unit (BTU)? the amount of heat required to raise the temperature of 1 pound of water 1 degree fahrenheit what is NFPA 1971 standard on protective ensembles for structural fire fighting and proximity fire fighting what is ANSI standard Z87.1 practice for occupational and educational eye and face protection what are the three components of a turnout coat? outer shell, moisture barrier, and thermal barrier what does DRD stand for? drag rescue device what does IDLH stand for? immediately dangerous to life and health what are four common respiratory hazards associated with fires and other emergencies? oxygen deficiency, elevated temperatures, smoke, and toxic atmospheres what does PPE stand for? personal protective equipment according to NFPA 1971, full PPE consists of the following? helmet, hood, coat, pants, gloves, and boots the following PPE is not part of NFPA 1971 but required by NFPA 1500? eye protection, hearing protection, self-contained breathing apparatus (SCBA), and personal alert safety system (PASS) what are the four basic SCBA componets? harness assembly, air cylinder assembly, regulator assembly, and face piece assembly air cylinders must be stamped or labeled with the dates of? manufacture, and hydrostatic test according to both the u.s. department of transportation and transport canada, steel and aluminum air cylinders must be tested every __ years and composite air cylinders every __ years? 5 and 3 what is a class B fire? flammable and combustible liquids, gases, and greases such as alcohol, cooking oils, gasoline, lubricating oils, and liquefied petroleum gas (LPG) what is a class C fire? class A or class B fires created by electrical energy what is a class D fire? combustible metals and alloys such as lithium, magnesium, potassium, and sodium what is a fire extinguisher? a portable fire fighting device designed to combat incipient fires every fire extinguisher extinguishes fire by at least one of the following mechanisms? smothering, cooling, chain breaking, and saponification what is NFPA 10? standard for portable fire extinguishers what is a class A fire? ordinary combustibles such as textiles, paper, plastic, rubber, and wood what is a class K fire? combustible cooking oils what does AFFF stand for? aqueous film forming foam what is the PASS method for a fire extinguisher? pull, aim, squeeze, and sweep what is ventilation? the systematic removal of heated air, smoke, and fire gases from a burning building and replacing them with cooler air what is conduction? the transfer of heat within a body or to another body by direct contact what three mechanisms can heat be transferred from one body to another? conduction, convection, and radiation what is convection? the transfer of heat energy by the movement of heated fluids or gases, usually in an upward direction what is radiation? the transmission or transfer of heat energy from one body to another body at a lower temperature through intervening space by electromagnetic waves, such as infrared thermal waves, radio, or x-rays. what are the stages of fire development? incipient, growth, fully developed fire, and decay what is a rollover? a condition where the unburned fire gases accumulated at the top of a compartment ignite and flames propagate through the how gas layer or across the ceiling what is a flashover? stage of fire at which all surfaces and objects within a space have been heated to their ignition temperature and flame breaks out almost at once over the surface of all objects in the space what is a backdraft? instantaneous explosion or rapid burning of superheated gases that occurs when oxygen is introduced into an oxygen-depleted confined space what are the reasons for ventilation? life safety, fire attack and extinguishment, fire spread control, reduction of flashover potential, reduction of backdraft potential, and property conservation what is natural ventilation? techniques that use the wind, convection currents, and other natrual phenomena to ventilate a structure without the use of fans, blowers, or other mechanical devices what is forced ventilation? is accomplished mechanically with fans or blowers or hydraulically with fog streams what is horizontal ventilation? the venting of heat, smoke, and gases through horizontal openings such as windws and doors what is vertical ventilation? generally means opening the roof or existing roof opening for the purpose of allowing heated gases and smoke to escape to the atmosphere when ventilating a residential structure what size hole should you cut? 4ft by 4ft when ventilating a commercial structure what size hole should you cut? 8ft by 8ft what is trench ventilation? defensive tactic that invloves cutting an exit opening in the roof of a burning building, extending from one outside wall to the other, to create an opening at which a spreding fire may be cut off what size should trench ventilation be? at least 4 feet wide and extends from one exerior wall to the opposite exterior wall