S-130 Study Questions With Complete Solutions

Origin correct answer: The area where the fire started. It is also the point from which the fire spreads, depending on the fuels present and the effects of wind and slope. Head correct answer: The part of a wildland fire with the greatest forward rate of spread (ROS). The head of a fire often burns intensely and may move with alarming speed. Some large fires may have multiple heads. Fingers correct answer: long, narrow strips of fire that extend from the main body of a fire. They form: -When a fire burns into mixed fuels; slowing in heavy fuel, but spreading quickly in light fuels -Due to variations in terrain or wind direction -When the head is split by natural features such as fields, water, or rock outcroppings Pocket correct answer: The unburned area between the main fire and any fingers. Perimeter correct answer: the outer boundary—or the distance around the outside edge—of the burning or burned area. Also commonly called the fire edge Rear correct answer: or heel, of a wildland fire is the end opposite the head—that is, relatively closer to the point of origin than to the head. Burns with low intensity Has a low rate of spread (ROS) Is generally easier to control than the head Flanks correct answer: The sides of a wildland fire, roughly parallel to the main direction of fire spread. Flanks are identif