BEFO final exam latest update with verified solutions

BEFO final exam latest update with verified solutions what is the mission of the fire service save lives, property and environment what is the ideal span of control 3-7 under one supervisor The formal line of authority, responsibility, and communication within an organization. chain of command Basic unit of fire fighting operations company what does a company consist of apparatus, firefighters, and an officer multiple companies within a response area battalion or response district performs fire suppression duties engine company Performs forcible entry, search and rescue, ventilation, salvage and overhaul, and utilities control and provides access to upper levels of a structure? truck (ladder) company searches for and removes victims rescue company Extinguishes ground cover or grass fires and protects structures in areas close to fields and woodlands brush company standard operating procedures SOPs establishes codes, standards, guidelines, and recommended practices for the prevention and control of fire National Fire Protection Association What is the leading cause of firefighter fatalities Cardiovascular disease common respiratory diseases COPD, asthma, lung cancer, etc what are the 3 zones of an incident scene Hot zone, warm zone, and cold zone What are the 3 types of accountability Passport System, SCBA Tag system, computer based Electrical field that radiates outward from where the current enters the ground ground gradient Separate telecommunications or dispatch centers that the fire department, EMS, or law enforcement agency operates Emergency service specific telecommunications center central location that takes all emergency calls and routes the calls to the scene Public Safety Answering Point (PSAP) who regulates all radio communication in the United States Federal Communications Commission (FCC) Radios used in fixed locations such as fire stations, telecommunications centers, training centers, or administrative offices are referred to as: Base station radios common radio limitations distance, physical barriers, dead zones, interference, ambient noise building type which provides the highest level of fire protection, made of concrete and steel Type 1 (fire resistive) building type which is composed of materials that won't contribute to fire development or spread, commonly with open web joists Type 2 (noncombustible) building type commonly found in mercantile, business, and residential structures. Usually has void spaces. Type 3 (ordinary construction) Building type which is made of large dimensioned lumber or laminated wood Type 4 (heavy timber) Building type commonly known as wood frame, load bearing walls are composed entirely of wood Type 5 (wood frame) A factory assembled residence built in units or sections that are transported to a permanent site and erected on a foundation. manufactured home Units that are constructed in factories off-site according to state building codes. Once assembled on the home site, it is immediately considered to be real property. modular home Home assembled on site consisting of constructed panels made of foam insulation sandwiched between sheets of plywood. panelized homes potential energy available for release in the combustion process heat of combustion The quantity of heat required to change the temperature of 1 gram of water by 1 degree Celcius 4.2 joules reactions that emit energy as they occur exothermic reaction reactions that absorb energy as they occur endothermic reaction off gassing chemical change in solids vaporization most common form of ignition, when a mixture of fuel and oxygen encounter an external heat source piloted ignition 3 sides of a fire triangle heat, fuel, oxygen 4 sides of fire tetrahedron reducing agent (fuel, chemical chain reaction, oxidizing agent, heat minimum temperature at which a fuel in the air must be heated in order to start self sustained combustion autoignition temperature (AIT) _______ combustion occurs more slowly and at lower temperatures, producing a smoldering glow in the materials surface nonflaming _______ combustion produces a visible flame above the material's surface. AKA fire flaming Smoke is the product of? incomplete combustion colorless, odorless gas, released when an organic material burns with limited supply of oxygen. Carbon monoxide (CO) a toxic, flammable substance produces in the combustion of materials containing nitrogen. 35 times more toxic than CO Hydrogen cyanide (HCN) Product of complete combustion of organic materials, displaces existing oxygen Carbon Dioxide (CO2) Gasses always move from _____ pressure to _____ pressure high, low does heat increase or decrease air pressure increase the measurement of heat temperature 3 sources of thermal energy electrical, chemical, mechanical transfer of heat through and between solids conduction The transfer of thermal energy by the circulation or movement of a liquid or gas convection the transmission of energy as electromagnetic waves, such as light waves, radio waves, or x rays radiation