S-290 Intermediate Wildland Fire Behavior Practice Test 2025 – Complete Exam Prep

A fire that advances through the canopies of brush and trees is termed a crown fire. This type of fire is distinguished by its propagation through the upper portions or crowns of trees, allowing it to move rapidly across large areas, especially under specific environmental conditions such as high winds and low humidity.

Crown fires can lead to intense burning, as they often consume not just the foliage but also the upper trunks of trees, and they can create significant fire behavior challenges for suppression efforts. Understanding crown fires is crucial because they can result in rapid spread and increased severity, making them a major concern for firefighters and land managers.

While ground fires occur in the organic materials beneath the surface, surface fires burn the vegetation on the ground and are typically less intense than crown fires. Spot fires refer to small fires that occur outside the main fire area, often ignited by embers carried by wind. Knowing these distinctions helps in assessing fire behavior and implementing appropriate management strategies.