Wildland Firefighting S-190 Exam Questions With 100% Correct Answers

Wildland Firefighting S-190 Exam Questions With 100% Correct Answers Where the fire started and or where it's going. - answerOrigin Greatest rate of spread. Moves intensely. May have more than one head. - answerHead Long narrow strips of fire that break off of the main fire. Caused by mixed fuels, natural features dividing the fire. - answerFingers Unaffected area between the main fire and finger. - answerPocket Outer boundary of burning or burnt area. - answerPerimeter Opposite to the head of the fire. Close to the point of origin. - answerRear/ heel Sides of a wildland fire. May change to the head or fingers might form because of fuel. - answerFlanks Unburned areas inside the perimeter. - answerIslands Unplanned or unwanted fires. - answerWildland fires Part of the control line. Dug to mineral soil. Where firefighting activities take place. - answerFireline Smalls fires burning beyond main fire boundary. - answerSpot fires Rising hot air/ gas above the fire source. - answerConvection column When fire crosses a control line - answerSlopover/ Breakover Unburned area close to the fire where live or dead fuels are. NOT SAFE - answerThe green Living plants, high moisture vegetation, low moisture content - answerLive fuels Where moisture is only governed by only atmospheric moisture. Ie: relative humidity and precipitation. - answerDead fuels Area where fire has already moved through. - answerThe Black Fuel that contacts the ground. Ex: leafs, dead branches, bark, tree cones. - answerSurface/ Ground Fuel Fuel suspended from the ground. Ex: branches, twigs, bark and vines. - answerAerial fuels Steep terrain, hot spots, falling snags, exposure from adjacent Unburned fuels. - answerBlack unsafe Wind shift or a fire moves fast and doesn't burn everything. - answerReburns Manner in which the fire reacts to various fuels, weather and topography. - answerFire behavior Movement of the fire. - answerFire spread How fast the fire is moving. Measured in chains or acres per hour. - answerRate of Spread ROS How the fire is measured. 60ft in a chain. Ex: 1ft/min= 1 chain per hour 10ft/min= 10 chains per hour - answerChain Where continuous combustion is taking place within a fire. Leading edge of fire perimeter. Surfaces fires= smoldering combustion. - answerFlaming front/ Fire front Self sustaining process of a fuel that produces heat and light. - answerCombustion Burning without flame. Moves slowly. - answerSmoldering Fast drying. Usually in a shallow flame front. High surface area to volume ratio. Less than 1/4 in diameter easily ignite and burn rapidly - answerLight fuels Logs, large limbs, not easy to ignite. Burn hot, long and slow - answerHeavy fuels Low flame. Burns slowly - answerCreeping fires Spreads rapidly. Well defined head. - answerRunning fire When the fire spreads across the tree tops faster than the surface Fire. - answerFire crowning Not as serious as a crown fire. Ignites tree tops for a bit then goes back to surface fire - answerTorching fire Sudden increase in ROS. Can behave like fire storms. - answerBlowup Work connections with putting out the fire. - answerFire Suppression Short time and doesn't change existing control plans. - answerFlare up Air blasts from helicopters and air tankers. - answerWhat cause flare ups?