S-190 Intro to Wildland Fire Behavior
Exam 2025 Questions and Answers
Point of Origin - Correct Answer✔️✔️-The precise location where a competent ignition source
came into contact with the material first ignited and sustained combustion occurred.
Head of Fire - Correct Answer✔️✔️-The side of the fire having the fastest rate of spread
Flank of Fire - Correct Answer✔️✔️-The part of a fire's perimeter that is roughly parallel to the
main direction of the spread.
Rear of Fire - Correct Answer✔️✔️-• that portion of a fire spreading directly into the wind or
down slope
• that portion of a fire edge opposite the head
• slowest spreading portion of a fire edge.
(Also called heel of a fire.)
Fire Perimeter - Correct Answer✔️✔️-The entire outer edge or boundary of a fire.
Fingers of a Fire - Correct Answer✔️✔️-The long narrow extensions of a fire projecting from the
main body
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, Pockets of a Fire - Correct Answer✔️✔️-Unburned indentations in the fire edge formed by fingers
or slow burning areas
Island - Correct Answer✔️✔️-Area of unburned fuel inside of the fire perimeter.
Spot Fire - Correct Answer✔️✔️-Fire ignited outside the perimeter of the main fire by a firebrand.
Smoldering - Correct Answer✔️✔️-Fire burning without flame and barely spreading.
White ash, complete combustion
Creeping Fire - Correct Answer✔️✔️-Fire burning with a low flame and spreading slowly.
Running Fire - Correct Answer✔️✔️-Behavior of a fire spreading rapidly with a well defined head.
Spotting - Correct Answer✔️✔️-Behavior of a fire producing sparks or embers that are carried by
the wind and which start new fires beyond the zone of direct ignition by the main fire.
Torching - Correct Answer✔️✔️-The burning of the foliage of a single tree or a small group of
trees, from the bottom up.
Crown Fire - Correct Answer✔️✔️-A fire that advances from top to top of trees or shrubs, more
or less independent of a surface fire. Crown fires are sometimes classified as running or dependent
to distinguish the degree of independence from the surface fire.
Flare Up - Correct Answer✔️✔️-Any sudden acceleration in the rate of spread or intensification of
the fire. Unlike blow up, a flare up is of relatively short duration and does not change existing
control plans.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
Exam 2025 Questions and Answers
Point of Origin - Correct Answer✔️✔️-The precise location where a competent ignition source
came into contact with the material first ignited and sustained combustion occurred.
Head of Fire - Correct Answer✔️✔️-The side of the fire having the fastest rate of spread
Flank of Fire - Correct Answer✔️✔️-The part of a fire's perimeter that is roughly parallel to the
main direction of the spread.
Rear of Fire - Correct Answer✔️✔️-• that portion of a fire spreading directly into the wind or
down slope
• that portion of a fire edge opposite the head
• slowest spreading portion of a fire edge.
(Also called heel of a fire.)
Fire Perimeter - Correct Answer✔️✔️-The entire outer edge or boundary of a fire.
Fingers of a Fire - Correct Answer✔️✔️-The long narrow extensions of a fire projecting from the
main body
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
, Pockets of a Fire - Correct Answer✔️✔️-Unburned indentations in the fire edge formed by fingers
or slow burning areas
Island - Correct Answer✔️✔️-Area of unburned fuel inside of the fire perimeter.
Spot Fire - Correct Answer✔️✔️-Fire ignited outside the perimeter of the main fire by a firebrand.
Smoldering - Correct Answer✔️✔️-Fire burning without flame and barely spreading.
White ash, complete combustion
Creeping Fire - Correct Answer✔️✔️-Fire burning with a low flame and spreading slowly.
Running Fire - Correct Answer✔️✔️-Behavior of a fire spreading rapidly with a well defined head.
Spotting - Correct Answer✔️✔️-Behavior of a fire producing sparks or embers that are carried by
the wind and which start new fires beyond the zone of direct ignition by the main fire.
Torching - Correct Answer✔️✔️-The burning of the foliage of a single tree or a small group of
trees, from the bottom up.
Crown Fire - Correct Answer✔️✔️-A fire that advances from top to top of trees or shrubs, more
or less independent of a surface fire. Crown fires are sometimes classified as running or dependent
to distinguish the degree of independence from the surface fire.
Flare Up - Correct Answer✔️✔️-Any sudden acceleration in the rate of spread or intensification of
the fire. Unlike blow up, a flare up is of relatively short duration and does not change existing
control plans.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
