S-290 LATEST EXAMS SCRIPT ALL QUESTIONS
AND ANSWERS SURE A+
✔✔A fuel model is defined as: - ✔✔A set of tubers that define fuel input for use in the
surface fire spread model.
✔✔The 4 fuel groups as defined in the Fire Behavior Prediction System are: - ✔✔Grass,
shrub, timer litter, and logging slash.
✔✔Available fuels are: - ✔✔All dead and live fuels that will ignite and continue to burn.
✔✔Fuel loading definition: - ✔✔The oven dry wight of fuel in an given area, expressed
in tons/acre or pounds/acre.
✔✔Fuel moisture content definition: - ✔✔The amount of water in a fuel expressed as a
percent of the oven dry weight of that fuel.
✔✔Fuel size and shape definition: - ✔✔The surface-area-to-flume ratio.
✔✔Fuel chemical content definition: - ✔✔The presence of volatile substances in a fuel.
, ✔✔Which of the following fuel characteristics affect all 6 wild land fire behavior
concerns; i.e. ignition, spread, intensity, spotting, torching, and crowning. - ✔✔Moisture
content
✔✔Which fuel has the higher surface-area-to-volume ration? - ✔✔Grass
✔✔The 1 hour timelag fuel category is: - ✔✔0.0 to 1/4 inch in diameter
✔✔Fuel moisture timelag can best be described as: - ✔✔The rate at which dead fuel
gains or loses moisture.
✔✔1 hour timelag fuel moisture is used in fire behavior calculations to determine: -
✔✔Whether fine dead fuels are available for ignition and fire spread.
✔✔The five stages of vegetative development for live fuel moisture are: - ✔✔300%,
200%, 100%, 50%, less 30%
✔✔The following statement best describes timelag fuel categories: - ✔✔1 hour timelag
fuels react to changes in RH mush faster than 100 hour fuels.
✔✔T/F Foehn winds always cause fuels to gain in moisture content. - ✔✔False
✔✔T/F Dead grass reacts like a 1 hour timelag fuel. - ✔✔True
✔✔The fuel moisture at which fire will not spread is the: - ✔✔Moisture of extinction
✔✔Inputs used to determine fine dead fuel moisture content are: - ✔✔Time of day,
month of year, dry bulb temperature, RH, aspect, percent slope, shading of surface
fuels.
✔✔Select the fuel complex that would reach it's moisture of extinction first during
nighttime humidity recovery. - ✔✔Cured cheatgrass
✔✔If the wet build is not read at it's lowest point, what will happen? - ✔✔The calculated
RH will be too high.
✔✔What weather processes can and should be monitored visually? - ✔✔All of the
above
Thunderstorm buildups
Clouds
Approaching cold fronts
Indications of a stable or unstable air
AND ANSWERS SURE A+
✔✔A fuel model is defined as: - ✔✔A set of tubers that define fuel input for use in the
surface fire spread model.
✔✔The 4 fuel groups as defined in the Fire Behavior Prediction System are: - ✔✔Grass,
shrub, timer litter, and logging slash.
✔✔Available fuels are: - ✔✔All dead and live fuels that will ignite and continue to burn.
✔✔Fuel loading definition: - ✔✔The oven dry wight of fuel in an given area, expressed
in tons/acre or pounds/acre.
✔✔Fuel moisture content definition: - ✔✔The amount of water in a fuel expressed as a
percent of the oven dry weight of that fuel.
✔✔Fuel size and shape definition: - ✔✔The surface-area-to-flume ratio.
✔✔Fuel chemical content definition: - ✔✔The presence of volatile substances in a fuel.
, ✔✔Which of the following fuel characteristics affect all 6 wild land fire behavior
concerns; i.e. ignition, spread, intensity, spotting, torching, and crowning. - ✔✔Moisture
content
✔✔Which fuel has the higher surface-area-to-volume ration? - ✔✔Grass
✔✔The 1 hour timelag fuel category is: - ✔✔0.0 to 1/4 inch in diameter
✔✔Fuel moisture timelag can best be described as: - ✔✔The rate at which dead fuel
gains or loses moisture.
✔✔1 hour timelag fuel moisture is used in fire behavior calculations to determine: -
✔✔Whether fine dead fuels are available for ignition and fire spread.
✔✔The five stages of vegetative development for live fuel moisture are: - ✔✔300%,
200%, 100%, 50%, less 30%
✔✔The following statement best describes timelag fuel categories: - ✔✔1 hour timelag
fuels react to changes in RH mush faster than 100 hour fuels.
✔✔T/F Foehn winds always cause fuels to gain in moisture content. - ✔✔False
✔✔T/F Dead grass reacts like a 1 hour timelag fuel. - ✔✔True
✔✔The fuel moisture at which fire will not spread is the: - ✔✔Moisture of extinction
✔✔Inputs used to determine fine dead fuel moisture content are: - ✔✔Time of day,
month of year, dry bulb temperature, RH, aspect, percent slope, shading of surface
fuels.
✔✔Select the fuel complex that would reach it's moisture of extinction first during
nighttime humidity recovery. - ✔✔Cured cheatgrass
✔✔If the wet build is not read at it's lowest point, what will happen? - ✔✔The calculated
RH will be too high.
✔✔What weather processes can and should be monitored visually? - ✔✔All of the
above
Thunderstorm buildups
Clouds
Approaching cold fronts
Indications of a stable or unstable air
