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WILDLAND FIRE S190 EXAM
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WILDLAND FIRE S190 EXAM
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WILDLAND FIRE S190 EXAM QUESTIONS NEWESTACTUAL EXAM COMPLETE 230 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |
ALREADY GRADED A+
Top three things to remember - ANSWER: 1- Fuel, Weather, Topography
2- Look up, Look down, Look all around
3- One foot in the green, One foot in the black
Breaking down the fire triangle - ANSWER: Remove O2 by covering with dirt or
retardant
Remove heat by cooling with water
Remove fuel by cutting lines
What are the 6 fuel types - ANSWER: 1- Grass
2- Grass-Shrub
3- Shrub
4- Timber
5- Timber-Understory
6- Slash/Blowdown
The four classes of fuel and sizes - ANSWER: 1- 1 Hour, 1/4" or less in diameter
2- 10 Hour, 1/4" to 1" (Most common in California, may be on test)
3- 100 Hour, 1" to 3"
4- 1000 Hour, 3" to 8"
What are the three fuel groups - ANSWER: 1- Ground fuels- Deep duff
2- Surface fuels- Grasses, shrubs
3- Aerial fuels- 6' or higher
For every 18* rise in temperature, fire intensity __________ in speed - ANSWER:
Doubles
In regards to fuel moisture, dead fuels and the atmosphere exchange moisture
quickly, but live fuel exchanges moisture at a _______ rate - ANSWER: Slower
The three factors in regards to fuel affects the start and spread of a wild land fire are
- ANSWER: 1- Moisture Content
2- Size and shape of the fuel
3- Fuel loading
Horizontal arrangement of fuels - ANSWER: How fuels are spaced.
Either uniform or patchy
Continuous fuels burn rapidly
Discontinuous fuels burn erratic
, Vertical arrangement of fuels - ANSWER: How fuels are arranged vertically causes
fire to travel in canopy.
Ground fire preheat above by convection
_________ fuels link surface material to the upper canopy - ANSWER: Ladder
The five indicators that fire behavior is increasing are - ANSWER: 1- Torching
2- Crowning
3- Increased Spot fires
4- Flare-ups
5- Increased rate of speed
Six ways wind affect fire behavior - ANSWER: 1- Increases O2
2- Drives convection heat
3- Influences direction of spread
4- Embers blow down wind
5- Bends flame to live fuels
6- Influences fire more than any other factor
Air rotates ___________1. around a high-pressure system and _________2. around
a low- pressure system - ANSWER: 1- Clockwise
2- Counter-clockwise
High pressure systems produce _________1. Weather and low pressure systems
produce ________2. Weather - ANSWER: 1- hot, dry and clear
2- clouds, rain and cold air
List the four local wind types - ANSWER: 1- Sea breeze
2- Land breeze
3- Slope winds
4- Valley winds
The four most problem type winds are - ANSWER: 1- Cold fronts
2- Foehn winds a.k.a. Gravity winds
3- Thunderstorm downdrafts
4- Whirlwinds
Six dangers associated with a cold front are - ANSWER: 1- Wind direction change of
90*
2- Strong southerly winds ahead of front
3- Winds continue to shift as front passes
4- Wind shifts west or Northwest after front passes
5- Develop rapid drop in RH (Within 24 hours of front passing through)
6- Thunderstorms could develop
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