Elements of Fire

Fire occurs whenever combustible fuel in the presence of oxygen at an extremely high temperature becomes gas. Flames are the visual indicator of the heated gas. Fire can also occur from lower-temperature sources. Over time, combustible materials such as smoldering embers can reach their ignition temperature.

The Fire Triangle

The fire triangle is a simple way of understanding the elements of fire. The sides of the triangle represent the interdependent ingredients needed for fire: heat, fuel and oxygen.

The fire triangle

Smokey Bear Says...

@smokey_bear 13 hours ago
Smokey Bear profile illustration
Smokey Bear profile illustration

Smokey Bear Says...

Stay cool out there! With warmer weather comes an even higher risk for wildfires! Be vigilant about wildfire preven… https://t.co/NGsMFUcfE6

@smokey_bear 13 hours ago

In 2019,
87% of wildfires were caused by humans.


(Source: nifc.gov)