S290 WILDLAND FIRE CORE MAIN EXAMS ALL
QUESTIONS AND ANSWERS SURE A+
✔✔When stable air is forced over a mountain range, and then descends the leeward
slope as dry, warmed air, it is called - ✔✔A foehn Wind (look this up)
✔✔T/F
Bends in canyons are likely places for eddies to form - ✔✔True
✔✔Local winds are best described as - ✔✔Small scale convective winds of local origin
caused by differences in heating and cooling
✔✔East, Mono, Santa Ana, and Chinook are all examples of
________________________. - ✔✔Foehn Winds
✔✔T/F
Air flows clockwise around low pressure systems and counterclockwise around high
pressure systems - ✔✔False.
Counterclockwise in Low Pressures
, Clockwise in High Pressures
✔✔T/F
Unstable air can often be found in low pressure systems and on leading edge of cold
fronts - ✔✔True
✔✔T/F
Unstable air can be formed by either heating the air near the ground or by cooling the
air aloft - ✔✔True
✔✔How is wind direction described? - ✔✔Wind direction is named by the direction wind
is blowing *FROM*
✔✔A slope wind is caused by - ✔✔Warm air rising and cold air settling
✔✔Stable/Unstable;
Gusty winds - ✔✔Unstable
✔✔Stable/Unstable;
Smoke column spreads out after limited rise - ✔✔Stable
✔✔Stable/Unstable
Clouds grow vertically - ✔✔Unstable
✔✔Stable/Unstable
Fire brands are lifted into convection column - ✔✔Unstable
✔✔When comparing pressure, The pressure at higher altitudes is ____________ than it
is at lower altitudes - ✔✔Lower
✔✔Temperature decreases with an increase in elevation when an inversion is present -
✔✔False. Temperatures increase with elevation during an inversion.
✔✔What is the general effect of stable air on wildland fires - ✔✔Fire activity decreases
✔✔What columns will occur under a surface inversion during the morning hours -
✔✔Temperatures are cool, winds are calm or light
QUESTIONS AND ANSWERS SURE A+
✔✔When stable air is forced over a mountain range, and then descends the leeward
slope as dry, warmed air, it is called - ✔✔A foehn Wind (look this up)
✔✔T/F
Bends in canyons are likely places for eddies to form - ✔✔True
✔✔Local winds are best described as - ✔✔Small scale convective winds of local origin
caused by differences in heating and cooling
✔✔East, Mono, Santa Ana, and Chinook are all examples of
________________________. - ✔✔Foehn Winds
✔✔T/F
Air flows clockwise around low pressure systems and counterclockwise around high
pressure systems - ✔✔False.
Counterclockwise in Low Pressures
, Clockwise in High Pressures
✔✔T/F
Unstable air can often be found in low pressure systems and on leading edge of cold
fronts - ✔✔True
✔✔T/F
Unstable air can be formed by either heating the air near the ground or by cooling the
air aloft - ✔✔True
✔✔How is wind direction described? - ✔✔Wind direction is named by the direction wind
is blowing *FROM*
✔✔A slope wind is caused by - ✔✔Warm air rising and cold air settling
✔✔Stable/Unstable;
Gusty winds - ✔✔Unstable
✔✔Stable/Unstable;
Smoke column spreads out after limited rise - ✔✔Stable
✔✔Stable/Unstable
Clouds grow vertically - ✔✔Unstable
✔✔Stable/Unstable
Fire brands are lifted into convection column - ✔✔Unstable
✔✔When comparing pressure, The pressure at higher altitudes is ____________ than it
is at lower altitudes - ✔✔Lower
✔✔Temperature decreases with an increase in elevation when an inversion is present -
✔✔False. Temperatures increase with elevation during an inversion.
✔✔What is the general effect of stable air on wildland fires - ✔✔Fire activity decreases
✔✔What columns will occur under a surface inversion during the morning hours -
✔✔Temperatures are cool, winds are calm or light
