answers
Origin - CORRECT ANSWERS ✔✔The area where the fire
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started. It is also the point from which the fire spreads,
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depending on the fuels present and the effects of the |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
wind slope. |\
Head - CORRECT ANSWERS ✔✔- The part of a wildland fire
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with the greatest forward rate of spread (ROS).
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- The head of the fire often burns intensely and may move
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with alarming speed.
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Fingers - CORRECT ANSWERS ✔✔Long, narrow strips of
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fire that extend from the main body of a fire.
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They form: |\
-When a fire burns into mixed fuels; slowing in heavy fuel,
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but spreading quickly in light fuels
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-Due to variations in terrain or wind direction
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-When the head is split by natural features such as fields,
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water, or rock outcroppings |\ |\ |\
Pocket - CORRECT ANSWERS ✔✔The unburned area
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between the main fire and any fingers. |\ |\ |\ |\ |\ |\
,Perimeter - CORRECT ANSWERS ✔✔The outer boundary- |\ |\ |\ |\ |\ |\ |\
or the distance around the outside edge. Also commonly
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called the fire edge. |\ |\ |\
Rear - CORRECT ANSWERS ✔✔Also known as the heel of
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the wildland fire is the end opposite of the head. The back
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of the fire. Relatively closer to the origin of the fire.
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Flanks - CORRECT ANSWERS ✔✔The sides of a wildland
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fire, roughly parallel to the main direction of fire spread.
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Flanks are identified as either left or right as you are
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looking from the heel of a fire toward the head.
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Islands - CORRECT ANSWERS ✔✔Unburned areas inside
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the fire perimeter. Because they are unburned potential
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fuels, patrol them frequently and check for spot fires.
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Spot Fire - CORRECT ANSWERS ✔✔Fire ignited outside the
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perimeter of the main fire by a firebrand.
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Slopover - CORRECT ANSWERS ✔✔Fire edge that crosses |\ |\ |\ |\ |\ |\ |\ |\
a control line. Also called Breakover.
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Green - CORRECT ANSWERS ✔✔Area that is not burnt.
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,Black - CORRECT ANSWERS ✔✔The burn area
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Rate of Spread (ROS) - CORRECT ANSWERS ✔✔- How fast
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the fire is moving. Measured in chains or acres per hour.
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- 1 ft. (0.3M)/minute = 1 chain/hour
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- 10ft.(3m)/minute = 10 chains/hour
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Flaming Front - CORRECT ANSWERS ✔✔Also known as |\ |\ |\ |\ |\ |\ |\
"Fire Front" is the part of the fire within which continuous
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flaming combustion is taking place. |\ |\ |\ |\
The leading edge of the fire perimeter.
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Smoldering FIre - CORRECT ANSWERS ✔✔Is one that |\ |\ |\ |\ |\ |\ |\ |\
burns without flame and is barely spreading
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Creeping Fire - CORRECT ANSWERS ✔✔Burns with a low |\ |\ |\ |\ |\ |\ |\ |\ |\
flame and spreads slowly |\ |\ |\
Running Fire - CORRECT ANSWERS ✔✔Fire spreading |\ |\ |\ |\ |\ |\ |\
rapidly with a well defined head |\ |\ |\ |\ |\
Backing Fire - CORRECT ANSWERS ✔✔Fire that moves|\ |\ |\ |\ |\ |\ |\ |\
away from the head, downhill or against the wind.
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, Crowning - CORRECT ANSWERS ✔✔When the fire |\ |\ |\ |\ |\ |\ |\
advances across the tops of trees or shrubs more or less
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independent of the surface fire |\ |\ |\ |\
Blowup - CORRECT ANSWERS ✔✔- When there is a
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sudden increase in ROS sufficient to prevent or rule out
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direct control of the fire.
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- Fire intensity increases suddenly posing a setback to
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suppression plans. |\
Flare-up - CORRECT ANSWERS ✔✔Any sudden |\ |\ |\ |\ |\ |\
acceleration in the ROS or intensification of the fire. A |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
flare-up is of relativity short duration and does not
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radically change existing control plans. |\ |\ |\ |\
Firewhirl - CORRECT ANSWERS ✔✔Spinning vortex column
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of ascending hot air and gases rising from a fire and
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carrying aloft smoke, debris, and flame. Fire whirls range
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in size from less than one foot to over 500 feet in
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diameter. large fire whirls have the intensity of a small
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tornado
Torching - CORRECT ANSWERS ✔✔Fire ignites the crown
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of trees, then returns to the surface
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