S-190 Practice Questions with 100% Correct
Answers
The precise location where a competent ignition source came into contact with the
material first ignited and sustained combustion occurred.
Point of origin.
The side of the fire having the fastest rate of spread
Head of a fire
The part of a fire's perimeter that is roughly parallel to the main direction of spread
Flank of a fire
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
Rear of a fire
The entire outer edge or boundary of a fire
Fire perimeter
The long narrow extensions of a fire projecting from the main body
Fingers of a fire
Unburned indentions in the fire edge formed by fingers or slow burning areas
Pockets of a fire
Area of unburned fuel inside the fire perimeter
Island
,Fire ignited outside the perimeter of the main fire by a firebrand
Spot fire
Fire burning without flame and barely spreading
Smoldering
Fire burning with a low flame and spreading slowly
Creeping fire
Behavior of a fire spreading rapidly with a well defined head
Running fire
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
Spotting
The burning of foliage of a single tree or a small group of trees, from the bottom up
Torching
A fire that advances from top to top of trees or shrubs more or less independent of a
surface fire.
Crown fire
Any sudden acceleration in the rate of spread or intensification of the fire. Relatively
short duration and does not change existing control plans
Flare up
, Spinning vortex column of ascending hot air and gases rising from a fire and carrying
aloft smoke, debris, and flame. Range in size from less than one foot to over 500 feet in
diameter. Large ones have the intensity of a small tornado
Firewhirl
The portion of the fire with slower rates of fire spread and lower intensity, normally
moving into the wind and/or down slope. Also called heel fire.
Backing fire
That zone of a moving fire where the combustion is primarily flaming.
Flaming front
An advantageous location, usually a barrier to fire spread, from which to start
constructing a fireline. Used to minimize the chance of being flanked by the fire while
the line is being constructed.
Anchor point
An inclusive term for all constructed or natural barriers and treated fire edges used to
contain a fire
Control line
The part of a containment or control line that is scraped or dug to mineral soil.
Fireline
Extinguishing or removing burning material near control lines, felling snags, and
trenching logs to prevent rolling after an area has burned, to make a fire safe, or to
reduce residual smoke.
Mop-up
Answers
The precise location where a competent ignition source came into contact with the
material first ignited and sustained combustion occurred.
Point of origin.
The side of the fire having the fastest rate of spread
Head of a fire
The part of a fire's perimeter that is roughly parallel to the main direction of spread
Flank of a fire
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
Rear of a fire
The entire outer edge or boundary of a fire
Fire perimeter
The long narrow extensions of a fire projecting from the main body
Fingers of a fire
Unburned indentions in the fire edge formed by fingers or slow burning areas
Pockets of a fire
Area of unburned fuel inside the fire perimeter
Island
,Fire ignited outside the perimeter of the main fire by a firebrand
Spot fire
Fire burning without flame and barely spreading
Smoldering
Fire burning with a low flame and spreading slowly
Creeping fire
Behavior of a fire spreading rapidly with a well defined head
Running fire
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
Spotting
The burning of foliage of a single tree or a small group of trees, from the bottom up
Torching
A fire that advances from top to top of trees or shrubs more or less independent of a
surface fire.
Crown fire
Any sudden acceleration in the rate of spread or intensification of the fire. Relatively
short duration and does not change existing control plans
Flare up
, Spinning vortex column of ascending hot air and gases rising from a fire and carrying
aloft smoke, debris, and flame. Range in size from less than one foot to over 500 feet in
diameter. Large ones have the intensity of a small tornado
Firewhirl
The portion of the fire with slower rates of fire spread and lower intensity, normally
moving into the wind and/or down slope. Also called heel fire.
Backing fire
That zone of a moving fire where the combustion is primarily flaming.
Flaming front
An advantageous location, usually a barrier to fire spread, from which to start
constructing a fireline. Used to minimize the chance of being flanked by the fire while
the line is being constructed.
Anchor point
An inclusive term for all constructed or natural barriers and treated fire edges used to
contain a fire
Control line
The part of a containment or control line that is scraped or dug to mineral soil.
Fireline
Extinguishing or removing burning material near control lines, felling snags, and
trenching logs to prevent rolling after an area has burned, to make a fire safe, or to
reduce residual smoke.
Mop-up
