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WILDLAND FIRE S190 EXAM 2025 UPDATED
ACTUAL EXAM WITH CORRECT SOLUTIONS.
When is a fire controlled? - correct answer- when control lines
can reasonably be expected to hold under the forseesable
conditions
pg. 1.9
What are the components of the fire triangle? - correct answer-
1) Fuel: to burn
2) Air: oxygen for flame
3) Heat: to start and continue combustion process.
*remove any single one, there can be no fire*
pg. 1.10
What are the 3 processes of heat transfer, which is most
important? - correct answer- 1) Radiation: dries surrounding
fuels and sometimes ignites them
2) Convection: occurs when lighter warm air moves upward
3) Conduction: heat transferred by from one fuel particle to
another
* convection is the most important while conduction is least
important because of woods low conduction rate*
, 2 | Page
Spotting - correct answer- process of convection starting new
fires beyond the zone of direct ignition by main fire
pg. 1.6
Running Fire - correct answer- fire spreading rapidly with a well
defined head
pg. 1.6
Smoldering - correct answer- also known as "punking around"
is a fire with out flame and barely spreading
pg. 1.6
Relative Humidity - correct answer- amount of moisture in the
air divided by the amount of air held when saturated at the
same air temperature
*typically reaches its lowest point at mid to late afternoon (when
temperature reaches its max)**
pg. 2b.8
Horizontal Continuity - correct answer- 1) Uniform fuels: all
fuels distributed continuously over an area. (network of fuels
providing continuous path of fire spread)
WILDLAND FIRE S190 EXAM 2025 UPDATED
ACTUAL EXAM WITH CORRECT SOLUTIONS.
When is a fire controlled? - correct answer- when control lines
can reasonably be expected to hold under the forseesable
conditions
pg. 1.9
What are the components of the fire triangle? - correct answer-
1) Fuel: to burn
2) Air: oxygen for flame
3) Heat: to start and continue combustion process.
*remove any single one, there can be no fire*
pg. 1.10
What are the 3 processes of heat transfer, which is most
important? - correct answer- 1) Radiation: dries surrounding
fuels and sometimes ignites them
2) Convection: occurs when lighter warm air moves upward
3) Conduction: heat transferred by from one fuel particle to
another
* convection is the most important while conduction is least
important because of woods low conduction rate*
, 2 | Page
Spotting - correct answer- process of convection starting new
fires beyond the zone of direct ignition by main fire
pg. 1.6
Running Fire - correct answer- fire spreading rapidly with a well
defined head
pg. 1.6
Smoldering - correct answer- also known as "punking around"
is a fire with out flame and barely spreading
pg. 1.6
Relative Humidity - correct answer- amount of moisture in the
air divided by the amount of air held when saturated at the
same air temperature
*typically reaches its lowest point at mid to late afternoon (when
temperature reaches its max)**
pg. 2b.8
Horizontal Continuity - correct answer- 1) Uniform fuels: all
fuels distributed continuously over an area. (network of fuels
providing continuous path of fire spread)
