WILDLAND FIREFIGHTING COURSE S-
190/S-130 EXAM 2025 QUESTIONS AND
ANSWERS
How many feet are in a chain? - ANS 66 feet
Name the 3 sides of the fire triangle: - ANS 1) Oxygen
2) Fuel
3) Heat
How does conduction supply heat to a fuel to start a fire? - ANS Conduction transfers heat to
adjacent fuels.via DIRECT CONTACT.
How does radiation supply heat to a fuel to start a fire? - ANS Radiation transfers heat to
fuels through heat waves and rays.
How does convection supply heat to a fuel to start a fire? - ANS Convection transfers heat to
fuels through indirect heating/cooling via wind/smoke.
Explain the reason for establishing an anchor point. - ANS Creates an advantageous and safe
point of origin to flank the fire by establishing control lines.
What types of fuels might we find on the NORTH ASPECT? - ANS Heavier fuels,
lower temperatures,
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, increased humidity,
wetter soil, and
increased fuel moisture
What types of fuels might we find on the SOUTH ASPECT? - ANS Lighter fuels,
increased temperatures,
decreased humidity,
dryer soil, and
decreased fuel moisture
Describe how a slope can affect a fire's rate of spread. - ANS Convected heat rises, and in
conjunction with radiant heat, fuels upslope from the fire dry out rapidly and combust at a
much greater rate than horizontal or downslope spread. Badness.
_____ bulb measures the ambient air temperature, and _____ bulb measures evaporation rates
to gauge relative humidity (RH). - ANS Dry
Wet
Explain the inverse relationship between temperature and relative humidity (RH). -
ANS When temperature increases, relative humidity decreases.
When temperature decreases, relative humidity increases.
What direction is wind coming from in a north wind? - ANS North, moving south.
Describe the effect an incoming cold front might have on fire behavior. - ANS A cold front is
the boundary line between 2 different air masses, with cooler air behind the frontal warmer air
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190/S-130 EXAM 2025 QUESTIONS AND
ANSWERS
How many feet are in a chain? - ANS 66 feet
Name the 3 sides of the fire triangle: - ANS 1) Oxygen
2) Fuel
3) Heat
How does conduction supply heat to a fuel to start a fire? - ANS Conduction transfers heat to
adjacent fuels.via DIRECT CONTACT.
How does radiation supply heat to a fuel to start a fire? - ANS Radiation transfers heat to
fuels through heat waves and rays.
How does convection supply heat to a fuel to start a fire? - ANS Convection transfers heat to
fuels through indirect heating/cooling via wind/smoke.
Explain the reason for establishing an anchor point. - ANS Creates an advantageous and safe
point of origin to flank the fire by establishing control lines.
What types of fuels might we find on the NORTH ASPECT? - ANS Heavier fuels,
lower temperatures,
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, increased humidity,
wetter soil, and
increased fuel moisture
What types of fuels might we find on the SOUTH ASPECT? - ANS Lighter fuels,
increased temperatures,
decreased humidity,
dryer soil, and
decreased fuel moisture
Describe how a slope can affect a fire's rate of spread. - ANS Convected heat rises, and in
conjunction with radiant heat, fuels upslope from the fire dry out rapidly and combust at a
much greater rate than horizontal or downslope spread. Badness.
_____ bulb measures the ambient air temperature, and _____ bulb measures evaporation rates
to gauge relative humidity (RH). - ANS Dry
Wet
Explain the inverse relationship between temperature and relative humidity (RH). -
ANS When temperature increases, relative humidity decreases.
When temperature decreases, relative humidity increases.
What direction is wind coming from in a north wind? - ANS North, moving south.
Describe the effect an incoming cold front might have on fire behavior. - ANS A cold front is
the boundary line between 2 different air masses, with cooler air behind the frontal warmer air
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