Wildland firefighting S-190 Exam Solved Questions|| 100% pass

Wildland firefighting S-190 Exam Solved Questions .Origin - Answer-Where the fire started and or where it's going. .Head - Answer-Greatest rate of spread. Moves intensely. May have more than one head. .Fingers - Answer-Long narrow strips of fire that break off of the main fire. Caused by mixed fuels, natural features dividing the fire. .Pocket - Answer-Unaffected area between the main fire and finger. .Perimeter - Answer-Outer boundary of burning or burnt area. .Rear/ heel - Answer-Opposite to the head of the fire. Close to the point of origin. .Flanks - Answer-Sides of a wildland fire. May change to the head or fingers might form because of fuel. .Islands - Answer-Unburned areas inside the perimeter. .Wildland fires - Answer-Unplanned or unwanted fires. .Fireline - Answer-Part of the control line. Dug to mineral soil. Where firefighting activities take place. .Spot fires - Answer-Smalls fires burning beyond main fire boundary. .Convection column - Answer-Rising hot air/ gas above the fire source. .Slopover/ Breakover - Answer-When fire crosses a control line .The green - Answer-Unburned area close to the fire where live or dead fuels are. NOT SAFE .Live fuels - Answer-Living plants, high moisture vegetation, low moisture content .Dead fuels - Answer-Where moisture is only governed by only atmospheric moisture. Ie: relative humidity and precipitation. .The Black - Answer-Area where fire has already moved through. .Surface/ Ground Fuel - Answer-Fuel that contacts the ground. Ex: leafs, dead branches, bark, tree cones. .Aerial fuels - Answer-Fuel suspended from the ground. Ex: branches, twigs, bark and vines. .Black unsafe - Answer-Steep terrain, hot spots, falling snags, exposure from adjacent Unburned fuels. .Reburns - Answer-Wind shift or a fire moves fast and doesn't burn everything. .Fire behavior - Answer-Manner in which the fire reacts to various fuels, weather and topography. .Fire spread - Answer-Movement of the fire. .Rate of Spread ROS - Answer-How fast the fire is moving. Measured in chains or acres per hour. .Chain - Answer-How the fire is measured. 60ft in a chain. Ex: 1ft/min= 1 chain per hour 10ft/min= 10 chains per hour .Flaming front/ Fire front - Answer-Where continuous combustion is taking place within a fire. Leading edge of fire perimeter. Surfaces fires= smoldering combustion. .Combustion - Answer-Self sustaining process of a fuel that produces heat and light. .Smoldering - Answer-Burning without flame. Moves slowly. .Light fuels - Answer-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 .Heavy fuels - Answer-Logs, large limbs, not easy to ignite. Burn hot, long and slow .Creeping fires - Answer-Low flame. Burns slowly .Running fire - Answer-Spreads rapidly. Well defined head.