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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

#SmokeyBearHug

@smokey_bear 2 hours ago
Smokey Bear profile illustration
Smokey Bear profile illustration

#SmokeyBearHug

RT @t_jh2009: Here's a baby photo of @smokey_bear, shortly after he was rescued from a New Mexico forest fire. #SentimentalSunday https://t…

@smokey_bear 2 hours ago

In 2015,
58,916 human-caused wildfires burned over
2 million acres.