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S-290 INTERMEDIATE WILDLAND FIRE
BEHAVIOR | COMPREHENSIVE Q&A FOR
GUARANTEED SUCCESS
Slope affects fuel availability to burn because-correct-answer-Fuels are preheated
upslope through radiation and convection
Rolling firebrands ignite new fuels below
Drier sites are more prevalent on steeper slopes
BOTH A AND B
Select the correct statement regarding the shape of the country and its effect on
wildland fire behavior-correct-answer-The shape of the country can influence the
curing of the fuels as well as the intensity and spread of wildland fires
Aspect affects fuels and their availability to burn because-correct-answer-
Southwest sites provide drier sites
Vegetation type and fuel moisture changes by aspect
Shading on northern aspects can increase relative humidity
ALL OF THE ABOVE
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Select the statement that best describes the effect of slope steepness on fuel
availability-correct-answer-A fire starting at the base of the slope has more fuel
available for spread
A fuel model is described as-correct-answer-A set of numbers that define fuel
input for use in the surface fire spread model
The four fuel groups defined in the fire behavior prediction system are-correct-
answer-Grass, shrub, timber and logging slash
Available fuels are-correct-answer-All dead and live fuels that will ignite and
continue to burn
Fuel loading is-correct-answer-The oven dry weight of fuel in an given area,
expressed as tons/acre or pounds/acre
Fuel moisture content-correct-answer-The amount of water in fuel expressed as a
percent of the oven dry weight of that fuel
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Fuel size and shape-correct-answer-The surface area to volume ratio
Fuel chemical content-correct-answer-The presence of volatile substances in a
fuel
Which of the following fuel characteristics affect all six wildland fire behavior
concerns, i.e. ignition, spread, intensity, spotting, torching, and crowning-correct-
answer-Moisture content
Which fuel group has the highest surface area to volume ratio?-correct-answer-
Grass
What size fuels make up the 1 hour timelag fuel category?-correct-answer-0.0 to
1/4" in diameter
Fuel moisture timelag can best be defined as-correct-answer-The rate at which
dead fuel gains or loses moisture
S-290 INTERMEDIATE WILDLAND FIRE
BEHAVIOR | COMPREHENSIVE Q&A FOR
GUARANTEED SUCCESS
Slope affects fuel availability to burn because-correct-answer-Fuels are preheated
upslope through radiation and convection
Rolling firebrands ignite new fuels below
Drier sites are more prevalent on steeper slopes
BOTH A AND B
Select the correct statement regarding the shape of the country and its effect on
wildland fire behavior-correct-answer-The shape of the country can influence the
curing of the fuels as well as the intensity and spread of wildland fires
Aspect affects fuels and their availability to burn because-correct-answer-
Southwest sites provide drier sites
Vegetation type and fuel moisture changes by aspect
Shading on northern aspects can increase relative humidity
ALL OF THE ABOVE
,2|Page
Select the statement that best describes the effect of slope steepness on fuel
availability-correct-answer-A fire starting at the base of the slope has more fuel
available for spread
A fuel model is described as-correct-answer-A set of numbers that define fuel
input for use in the surface fire spread model
The four fuel groups defined in the fire behavior prediction system are-correct-
answer-Grass, shrub, timber and logging slash
Available fuels are-correct-answer-All dead and live fuels that will ignite and
continue to burn
Fuel loading is-correct-answer-The oven dry weight of fuel in an given area,
expressed as tons/acre or pounds/acre
Fuel moisture content-correct-answer-The amount of water in fuel expressed as a
percent of the oven dry weight of that fuel
, 3|Page
Fuel size and shape-correct-answer-The surface area to volume ratio
Fuel chemical content-correct-answer-The presence of volatile substances in a
fuel
Which of the following fuel characteristics affect all six wildland fire behavior
concerns, i.e. ignition, spread, intensity, spotting, torching, and crowning-correct-
answer-Moisture content
Which fuel group has the highest surface area to volume ratio?-correct-answer-
Grass
What size fuels make up the 1 hour timelag fuel category?-correct-answer-0.0 to
1/4" in diameter
Fuel moisture timelag can best be defined as-correct-answer-The rate at which
dead fuel gains or loses moisture
