S-190 Intro to Wildland Fire Behavior Questions with Verified Answers

S-190 Intro to Wildland Fire Behavior Questions with Verified Answers When is a fire controlled? -️️ when control lines can reasonably be expected to hold under the forseesable conditions pg. 1.9 What are the components of the fire triangle? -️️ 1) Fuel: to burn 2) Air: oxygen for flame 3) Heat: to start and continue combustion process. *remove any single one, there can be no fire* pg. 1.10 What are the 3 processes of heat transfer, which is most important? -️️ 1) Radiation: dries surrounding fuels and sometimes ignites them 2) Convection: occurs when lighter warm air moves upward 3) Conduction: heat transferred by from one fuel particle to another * convection is the most important while conduction is least important because of woods low conduction rate* Spotting -️️ process of convection starting new fires beyond the zone of direct ignition by main fire pg. 1.6 Running Fire -️️ fire spreading rapidly with a well defined head pg. 1.6 Smoldering -️️ also known as "punking around" is a fire with out flame and barely spreading pg. 1.6 Relative Humidity -️️ amount of moisture in the air divided by the amount of air held when saturated at the same air temperature *typically reaches its lowest point at mid to late afternoon (when temperature reaches its max)** pg. 2b.8