S 290 COMPREHENSIVE TEST PAPER 2026
QUESTIONS AND CORRECT ANSWERS
GRADED A+
●● Of the three primary environmental factors that influence fire
behavior, which is the least variable?
Answer: Topography
●● The least critical form of heat transfer that influences rate of spread
in a running wild land fire is:
Answer: Conduction
●● The point to which a combustible material must be heated to produce
self-sustaining combustion is known as the:
Answer: Ignition temperature
●● Fireline intensity is dependent upon:
Answer: All of the above.
Fuel size
Fuel moisture
Fuel temperature
Fuel compactness and arrangement
,●● T/F Two requirements for long range spotting are wind and a well
developed convection column.
Answer: True
●● A fire that advances through canopies of brush and trees is known as
a:
Answer: Crown fire
●● Fire is burning in litter on top of the ground, but occasionally carries
into the crowns of individual trees, which produces burning embers that
start new fires outside the fire perimeter.
Answer: Surface fire with torching and spotting.
●● Fire begins burning into the crowns and spreads through the canopy.
There is a sudden increase in fireline intensity where the fire controls it's
environment. At one point flames can be seen carried high into the
convection column with a whirling motion.
Answer: Ground fire with smoldering and flare ups.
●● T/F Upward moving air contracts and warms.
Answer: False
●● As air sinks, it.
, Answer: Increases in pressure, warms and compresses.
●● Why do dry climates usually have lower nighttime temperatures than
humid climates?
Answer: Because there is less water vapor in the air to absorb and reflect
heat back to the surface at night.
●● T/F On average the RH doubles with each 20F decrease of
temperature, or halves with each 20F increase in temperature.
Answer: True
●● T/F The lowest RH occurs with the highest temperature.
Answer: True
●● T/F RH is usually lower on north aspects.
Answer: False
●● T/F Cloudiness has little affect on relative humidity and temperature.
Answer: False
●● T/F The type of vegetation has little affect on temperature and
humidity.
Answer: False
QUESTIONS AND CORRECT ANSWERS
GRADED A+
●● Of the three primary environmental factors that influence fire
behavior, which is the least variable?
Answer: Topography
●● The least critical form of heat transfer that influences rate of spread
in a running wild land fire is:
Answer: Conduction
●● The point to which a combustible material must be heated to produce
self-sustaining combustion is known as the:
Answer: Ignition temperature
●● Fireline intensity is dependent upon:
Answer: All of the above.
Fuel size
Fuel moisture
Fuel temperature
Fuel compactness and arrangement
,●● T/F Two requirements for long range spotting are wind and a well
developed convection column.
Answer: True
●● A fire that advances through canopies of brush and trees is known as
a:
Answer: Crown fire
●● Fire is burning in litter on top of the ground, but occasionally carries
into the crowns of individual trees, which produces burning embers that
start new fires outside the fire perimeter.
Answer: Surface fire with torching and spotting.
●● Fire begins burning into the crowns and spreads through the canopy.
There is a sudden increase in fireline intensity where the fire controls it's
environment. At one point flames can be seen carried high into the
convection column with a whirling motion.
Answer: Ground fire with smoldering and flare ups.
●● T/F Upward moving air contracts and warms.
Answer: False
●● As air sinks, it.
, Answer: Increases in pressure, warms and compresses.
●● Why do dry climates usually have lower nighttime temperatures than
humid climates?
Answer: Because there is less water vapor in the air to absorb and reflect
heat back to the surface at night.
●● T/F On average the RH doubles with each 20F decrease of
temperature, or halves with each 20F increase in temperature.
Answer: True
●● T/F The lowest RH occurs with the highest temperature.
Answer: True
●● T/F RH is usually lower on north aspects.
Answer: False
●● T/F Cloudiness has little affect on relative humidity and temperature.
Answer: False
●● T/F The type of vegetation has little affect on temperature and
humidity.
Answer: False
