What are the three basic types of fire behavior?

The three basic types of fire behavior include flaming combustion, smoldering combustion, and spontaneous combustion. Flaming combustion occurs when a fire generates a visible flame, indicating that the material is burning at a high temperature and often producing gases that can ignite. Smoldering combustion refers to a slower form of burning that occurs without flames, often at lower temperatures, where solid fuels burn incompletely, creating smoke and potentially toxic gases.

Spontaneous combustion is a unique type of combustion that happens without an external ignition source. It occurs when materials undergo a chemical reaction that generates enough heat to ignite the material itself, usually due to factors like heat buildup and oxidation. These classifications are fundamental for understanding how fires behave and for developing firefighting strategies, as they help determine the approach to extinguishing fires effectively.

Other combinations in the choices focus on aspects of combustion but do not correctly encapsulate the three basic behaviors recognized in fire science. For example, terms like controlled combustion and fire resistance refer more to fire containment techniques and building materials rather than types of combustion itself.