.png){kind=logo}
- | Page
S-290 FINAL EXAM
EXAM WITH CORRECT SOLUTIONS.
T/F Topography can directly and indirectly affect fuels and their availability for combustion? - correct answer- True
Of the three primary environmental factors that influence fire behavior, which is the least variable? - correct answer- Topography
The least critical form of heat transfer that influences rate of
spread in a running wild land fire is: - correct answer-
Conduction
The point to which a combustible material must be heated to
produce self sustaining combustion is known as the: - correct
answer- Ignition temperature
Fireline intensity is dependent upon: - correct answer- All of the
above
- / 3
- | Page
T/F Two requirements for long-range spotting are wind and a
well developed convection column: - correct answer- True
A fire that advances through canopies of brush and trees is
known as a: - correct answer- Crown fire
Fire is burning in litter on top of the ground, but occasionally carries into crowns of individual trees, which produces buying
embers that start new fires outside the fire perimeter: - correct
answer- Surface fire with torching and spotting
Fire begins burning into the crowns and spreads through the canopy. There is a sudden increase in fireline intensity where the fire controls it's environment. At one point flames can be seen carried high into the convection column with a whirling motion. - correct answer- Crown fire with convection column and firewhirls
Fire is consuming the organic materials beneath the surface of the ground after the main fie has passed through and is spreading on the surface without flames. Occasionally the fire will ignite areas of unburned fuels on the surface and short fire runs take place. - correct answer- Ground fire with smoldering and flare ups
- / 3
- | Page
T/F Upward movie air contracts and warms: - correct answer-
False
As air sinks, it: - correct answer- Increases in pressure, warms
and compresses
T/F On average the RH doubles with each 20F decrease of temperature, or halves with each 20F increase of temperature.
- correct answer- True
T/F The lowest RH occurs with the highest temperature. - correct answer- True
T/F RH is usually lower on north aspects. - correct answer- False
T/F Cloudiness has little affect on RH and temperature. - correct answer- False
- / 3
.png)