Firefighter 1 & 2 Comprehensive Quiz

Firefighter 1 & 2 Comprehensive Quiz An atmosphere is considered hazardous if it contains a hazardous gas in excess of 10 percent of the hazardous material's: Lower Explosive Limit How does wind affect ground cover fire development? Provides fresh air that speeds up combustion Firefighters should wear SCBA in hazardous atmospheres, because exposure to particulate contaminants such as _____ can cause lung cancer or cardiovascular disease. Vehicle exhaust emissions What is a characteristic of carbon dioxide (CO2) extinguishers? CO2 gas displaces oxygen to smother the fire. Which type of foam proportioner is directly attached to the pump panel outlet or connected at some point in the hose lay? In-line eductor When firefighters enter a home to do a residential fire and life safety survey, one of the main objectives should be to: Help the occupant understand how to improve safety conditions. One problem with breaching interior and exterior walls is that: they may conceal electrical wires and gas pipes.