pg. 1 S-290 Final Exam 2024 -2025 COMPLETE 200+
ACTUAL EXAM QUESTIONS WITH 100%
CORRECT VERIFIED ANSWERS/ GRADED A+
Define fuel moisture content: - Correct Answer - The amount of water in
fuel expressed as a percent of the oven dry weight of that fuel.
The fire weather planning forecast, spot forecasts, red flag warnings, and
smoke management forecasts are products issued by: - Correct Answer -
The National Weather Service
Which one or more of the following statements are correct regarding wind
driven and plume dominated fires: - Correct Answer - Wind driven fires are
easier to predict the direction of spread Plume dominated fires have similar hazards to thunderstorms Plume dominated fires the convected column dictates the fire activity
List the 3 methods used in the field to determine slope percent: - Correct
Answer - Clinometer/abney, measurement using a stick propped into slope and percent slope formula, slope meter estimate
Upslope winds are typically weakest on what aspect: - Correct Answer -
North
The 3 stages of crown fire development include: - Correct Answer -
Passive, active, and dependent
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pg. 2
Slope effects fuel availability to burn because: - Correct Answer - Fuels are
preheated upslope through radiation and convection Rolling firebrands ignite fuels below
Which of the following topographic variations in wind speed would expect
on a sunny summer afternoon: - Correct Answer - Highest wind speeds on
upper windward slopes Lowest wind speeds on downwind slopes
Inputs used to determine fine dead fuel moisture content are: - Correct
Answer - Time of day, month of year, dry bulb temp, RH, aspect, percent slope, and shading of surface fuels
General winds are: - Correct Answer - Large scale winds caused by the
pressure gradients associated with highs and lows.
If the wet bulb is not read at it's lowest point on a psychrometer - Correct Answer - The calculated Rh would be too high
Branches above the fire are receiving heat by: - Correct Answer - Radiation
and convection
RH is: - Correct Answer - The ratio of the amount of water vapor in the air
to the amount of water vapor the air can hold when saturated at the same temperature.
Which statements best describe the relationships among RH, wind, and moisture content, of fine and large fuels - Correct Answer - In general under the affect of Foehn wind conditions, fuel moistures will decrease. 2 / 3
pg. 3 Wind accelerates at a rate at which fuels gain or lose moisture.
A large smoke plume spreads out in all directions at 10000 feet above the
ground, this is often an indication: - Correct Answer - Of a subsidence
inversion.
A continental polar air mass is ____ and ____ than a maritime tropical
airmass: - Correct Answer - Colder and dryer
East, mono, santa ana, and chinook are examples of : - Correct Answer -
Foehn Winds
The 3 contributing elements to spot fires are: - Correct Answer - Firebrand
source, transportation, receiving fuels
Local winds are: - Correct Answer - Found at lower levels of the
atmosphere that are produced by small scale differences in air temperature and pressure.
The weaker the pressure gradient: - Correct Answer - The slower the wind
speed
What are two dominant drivers of large sudden changes in fire behavior: -
Correct Answer - Changes in fuels and wind
On what aspect would the lowest RH be found: - Correct Answer -
Southwest
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