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WILDLAND FIRE S190 EXAM QUESTIONS NEWEST ACTUAL EXAM
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WILDLAND FIRE S190 EXAM QUESTIONS NEWEST ACTUAL EXAM
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Wildland Fire - S190Terms in this set (78)
Heat - Oxygen - Fuel
3 Sides of Fire Triangle
Without one!... Fire goes out!
3 Methods of heat transfer Radiation - Conduction - Convection
The part of a fire's perimeter that is roughly parallel to
Head of Fire
the main direction of spread
Extension of main fire - the long narrow extensions of a
Fingers of a fire
fire projecting from the main body
Beyond the main fire - Fire ignited outside the perimeter
Spot Fire
of the main fire by a firebrand
Smoldering Fire burning without a flame and barely spreading
Creeping Fire Fire burning with a low flame and spreading slowly
Behavior of a fire spreading rapidly with a well defined
Running Fire
head
Fire can reasonably be expected to hold under the
Controlled
foreseeable conditions
South Facing Slope Will have more activity than a North facing slope.
Canyons Box Canyons & Narrow Canyons (Dangerous)
Fire can spread easily (in steep narrow canyon) to fuels
on the opposite site by radiation and spotting. Wind
Narrow Canyons
eddies and strong upslope air movement may be
expected at sharp bends
Barriers - Natural Rivers - Lakes - Rock - Slides-oceans-lava field
Roads - Highways - Reservoirs - Fireline constructed by
Barriers - Man-made
fire resources
, Grass - Grass Shrubs - Shrub - Timber Understory -
Fuel Types
Timber Litter - Slash Blowdown
Fine Fuels Grass - Grass Shrubs - Easier to burn
Horizontal Continuity Uniform Fuels and Patchy Fuels
Uniform Fuels All fuels distributed continuously over the area
Patches of rock outcroppings - Bare ground - Areas
Patchy Fuels where another dominant type of fuel is much less
flammable
Combustible materials that aid the spread of fire from
Ladder Fuels
the surface to the upper canopy
The amount of water in a fuel, expressed as a
Fuel Moisture
percentage of the oven-dry weight of that fuel
control-
crews begin mop up
anchor point is established
fire is expected to hold in the conditions
Control vs. containment fireline all around fire
containment-
when a fire is encircled by a fireline but not under
control
what do prior burns do? slows down the spread of fire
fuel ladder
visible indicators of fire
behavior increasing
When is R.H usually lowest mid afternoon
What do narrow canyons preheating, spotting, chimney effect
cause?
narrow canyons where air is funneled and accelerates
chimney effect
the fire faster and upslope
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