S-190 Exam | latESt vErSion vErifiEd
for accuracy| QuEStionS + complEtE
anSwErS SolvEd 100% corrEct!!
1. What are the methods of heat transfer - ANSWER ✔ conduction,
convection, radiation
2. What is conduction - ANSWER ✔ transfer of energy from one place
to another by contact... least important of the three types to fire
behavior
3. Why are box canyons dangerous - ANSWER ✔ similar to wood
stove, air drain in from the canyon bottom up creating strong upslope
drafts. cause rapid spread up canyon (chimney effect)
4. Why are narrow canyons dangerous? - ANSWER ✔ easily spread to
fuels on opposite side by radiation and spotting.. wind eddies and
strong upslope air movement should be expected
5. Why are wide canyons dangerous? - ANSWER ✔ wind direction can
be altered by direction of canyon... cross canyon spotting fires not
, uncommon except in high winds... differences in fire behavior will
occur on north and south aspects
6. Why are ridges dangerous - ANSWER ✔ may change direction when
reach a point at drop off (caused by air flow from canyon)
7. What is a saddle - ANSWER ✔ A saddle is a common name for a
depression between two adjacent hilltops... wind can increase in
speed as it passes through the constricted area and spreads out on
downwind side with possibility of eddy
8. Elevation influence - ANSWER ✔ (ASL- above sea level) lower
elevations: higher temps and fuels dry out earlier in the year... high
elevation may have no fuels... elevation affects the amount of
precipitation, wind exposure, relationship to the surrounding terrain
9. What are some natural and man made barriers - ANSWER ✔ rocks,
rivers, roads, fireline, reservoirs
10. What are the six fuel types - ANSWER ✔ grass (hottest/fastest..
desert/range areas... 1 hour fuels), grass-shrubs (plains/high deserts),
shrub, timber-understory (ladder to crown fuels), timber litter
(common in mountains in NW), slash-blowdown (after natural or
human activities)
for accuracy| QuEStionS + complEtE
anSwErS SolvEd 100% corrEct!!
1. What are the methods of heat transfer - ANSWER ✔ conduction,
convection, radiation
2. What is conduction - ANSWER ✔ transfer of energy from one place
to another by contact... least important of the three types to fire
behavior
3. Why are box canyons dangerous - ANSWER ✔ similar to wood
stove, air drain in from the canyon bottom up creating strong upslope
drafts. cause rapid spread up canyon (chimney effect)
4. Why are narrow canyons dangerous? - ANSWER ✔ easily spread to
fuels on opposite side by radiation and spotting.. wind eddies and
strong upslope air movement should be expected
5. Why are wide canyons dangerous? - ANSWER ✔ wind direction can
be altered by direction of canyon... cross canyon spotting fires not
, uncommon except in high winds... differences in fire behavior will
occur on north and south aspects
6. Why are ridges dangerous - ANSWER ✔ may change direction when
reach a point at drop off (caused by air flow from canyon)
7. What is a saddle - ANSWER ✔ A saddle is a common name for a
depression between two adjacent hilltops... wind can increase in
speed as it passes through the constricted area and spreads out on
downwind side with possibility of eddy
8. Elevation influence - ANSWER ✔ (ASL- above sea level) lower
elevations: higher temps and fuels dry out earlier in the year... high
elevation may have no fuels... elevation affects the amount of
precipitation, wind exposure, relationship to the surrounding terrain
9. What are some natural and man made barriers - ANSWER ✔ rocks,
rivers, roads, fireline, reservoirs
10. What are the six fuel types - ANSWER ✔ grass (hottest/fastest..
desert/range areas... 1 hour fuels), grass-shrubs (plains/high deserts),
shrub, timber-understory (ladder to crown fuels), timber litter
(common in mountains in NW), slash-blowdown (after natural or
human activities)
