Prepare for the TFM-04 Fire Extinguisher License – A with comprehensive flashcards and multiple choice questions. Each question offers hints and explanations. Get ready for your exam!

Multiple Choice

What are the three elements of the fire triangle that must be removed or controlled to stop a fire?

The fire triangle shows that three things must be present for a fire to keep burning: heat, fuel, and oxygen. If you remove any one of these elements, combustion cannot continue, so the fire goes out. You can stop a fire by cooling it to below its ignition temperature (removing heat), removing or isolating the fuel source (starving the fire), or displacing or excluding the air (reducing oxygen). In practice, cooling with water lowers heat, shutting off gas or removing combustibles handles the fuel, and using blankets, foam, or CO2 smothers or reduces the available oxygen. These three elements—heat, fuel, and oxygen—are the ones described.

The fire triangle shows that three things must be present for a fire to keep burning: heat, fuel, and oxygen. If you remove any one of these elements, combustion cannot continue, so the fire goes out. You can stop a fire by cooling it to below its ignition temperature (removing heat), removing or isolating the fuel source (starving the fire), or displacing or excluding the air (reducing oxygen). In practice, cooling with water lowers heat, shutting off gas or removing combustibles handles the fuel, and using blankets, foam, or CO2 smothers or reduces the available oxygen. These three elements—heat, fuel, and oxygen—are the ones described.