S290 FINAL EXAM EXPERT SOLVED QUESTIONS WITH VERIFIED ANSWERS (NEWEST VERSION)

S290 FINAL EXAM EXPERT SOLVED QUESTIONS WITH VERIFIED ANSWERS NEWEST 2024 A+ GRADED T/F Topography can directly and indirectly affect fuels and their availability for combustion. - Answer- True Of the three primary environmental factors that influence fire behavior, which is the least variable? - Answer- Topography Which is an indicator of possible fire behavior problems? - Answer- All of the above Leaning, sheared, or well-developed smoke column Trees crowning Fire whirls beginning Frequent spot fires The least critical form of heat transfer that influences rate of spread in a running wild land fire is: - Answer- Conduction The point to which a combustible material must be heated to produce self-sustaining combustion is known as the: - Answer- Ignition temperature What are the different lighting processes that can lead to thunderstorm development? - Answer- Frontal, orographic, thermal, convergence T/F Unstable air can often be found in low pressure systems and on the leading edge of cold fronts. - Answer- True Fireline intensity is dependent upon: - Answer- All of the above. Fuel size Fuel moisture Fuel temperature Fuel compactness and arrangement T/F Two requirements for long range spotting are wind and a well developed convection column. - Answer- True You are on a fire in the coast range of Southern California. The fire is burning above you on the slope. At 1800, you experience a sudden cal in the sea breeze. What might you next expect to occur next? - Answer- Wind may shift to downslope with possible foehn wind surfacing. The convection column form your fire has developed to several thousand feet as a result of intense burning. You notice the top of the column has been sheared off. What could happen next? - Answer- Expect moderate to long range spotting downwind. Strong winds aloft could surface on the fire. List three methods of mass transport of firebrands on wildland fires. CONVECTION, WIND, GRAVITY A fire that advances through canopies of brush and trees is known as a: - Answer- Crown fire Fire is burning in litter on top of the ground, but occasionally carries into the crowns of individual trees, which produces burning embers that start new fires outside the fire perimeter. - 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. - Answer- Ground fire with smoldering and flare ups. In an unstable atmosphere: A and Bz T/F Upward moving air contracts and warms. - Answer- False As air sinks, it. - Answer- Increases in pressure, warms and compresses.