S-290 Final Exam B questions with verified answers
1 hour fuels
10 hour fuels
100 hour fuels
1000 hour fuels Ans✓✓✓ 0-1/4 inch
1/4-1 inch
1-3 inch
3-8 inch
7 day significant fire potential, monthly fire weather/fire danger outlooks, and
seasonal assessments, are all products produced by what organization. Ans✓✓✓
Land Management Predictive Services
A continental polar air mass is ____ and ____ than a maritime tropical airmass:
Ans✓✓✓ Colder and dryer
A fire burning in grass fuel, on level ground, and influenced by a 20 mph wind,
could most likely exhibit what fire behavior: Ans✓✓✓ Running
A large smoke plume spreads out in all directions at 10000 feet above the ground,
this is often an indication: Ans✓✓✓ Of a subsidence inversion.
A smoke column that drifts apart after limited rise indicates: Ans✓✓✓ Stable
atmosphere
, A sudden increase in temperature and windspeed and a sudden decrease in RH
often occurs: Ans✓✓✓ When a nighttime or radiation inversion breaks.
Air flows ____ around low pressure and _______ around high pressure. Ans✓✓✓
Counterclockwise and clockwise
Air in low pressure: Ans✓✓✓ Rises
Branches above the fire are receiving heat by: Ans✓✓✓ Radiation and
convection
Define fuel moisture content: Ans✓✓✓ The amount of water in fuel expressed as
a percent of the oven dry weight of that fuel.
Describe how convection influences transport of firebrands Ans✓✓✓ Rising heat
produced from fires can lift firebrands within the column. These firebrands can
then be deposited ahead of the fire as they fall out of the column.
Dew point temp is: Ans✓✓✓ The temperature to which air must be cooled to
reach saturation.
East, mono, santa ana, and chinook are examples of : Ans✓✓✓ Foehn Winds
General winds are: Ans✓✓✓ Large scale winds caused by the pressure gradients
associated with highs and lows.
1 hour fuels
10 hour fuels
100 hour fuels
1000 hour fuels Ans✓✓✓ 0-1/4 inch
1/4-1 inch
1-3 inch
3-8 inch
7 day significant fire potential, monthly fire weather/fire danger outlooks, and
seasonal assessments, are all products produced by what organization. Ans✓✓✓
Land Management Predictive Services
A continental polar air mass is ____ and ____ than a maritime tropical airmass:
Ans✓✓✓ Colder and dryer
A fire burning in grass fuel, on level ground, and influenced by a 20 mph wind,
could most likely exhibit what fire behavior: Ans✓✓✓ Running
A large smoke plume spreads out in all directions at 10000 feet above the ground,
this is often an indication: Ans✓✓✓ Of a subsidence inversion.
A smoke column that drifts apart after limited rise indicates: Ans✓✓✓ Stable
atmosphere
, A sudden increase in temperature and windspeed and a sudden decrease in RH
often occurs: Ans✓✓✓ When a nighttime or radiation inversion breaks.
Air flows ____ around low pressure and _______ around high pressure. Ans✓✓✓
Counterclockwise and clockwise
Air in low pressure: Ans✓✓✓ Rises
Branches above the fire are receiving heat by: Ans✓✓✓ Radiation and
convection
Define fuel moisture content: Ans✓✓✓ The amount of water in fuel expressed as
a percent of the oven dry weight of that fuel.
Describe how convection influences transport of firebrands Ans✓✓✓ Rising heat
produced from fires can lift firebrands within the column. These firebrands can
then be deposited ahead of the fire as they fall out of the column.
Dew point temp is: Ans✓✓✓ The temperature to which air must be cooled to
reach saturation.
East, mono, santa ana, and chinook are examples of : Ans✓✓✓ Foehn Winds
General winds are: Ans✓✓✓ Large scale winds caused by the pressure gradients
associated with highs and lows.
