s-290 Exam Questions With 100%
Correctly Confirmed Answers
LCES L stands for - ANSlookouts
LCES C stands for - ANScommunications
LCES E stands for - ANSEscape routes
LCES s stands for - ANSsafety zones
5 whether factors that effect fire behavior - ANSTemperature, Relative humidity, stability, wind,
precipitation
5 topographic factors that effect fire behavior - ANSelevation, aspect, slope, shape, position of slope
8 fuel factors that effect fire behavior - ANSfuel load
size and shape
compactness
horizontal continuity
vertical continuity
chemical content
fuel moisture
fuel temperature
which of the three components of fire environment changes the most rapidly over time & space -
ANSwhether
which of the three components of the fire environment is the least variable - ANStopography
,which fuel characteristics vary rapidly over time and space - ANStemperature & moisture
heat transfer that most influences spread of a ground fire - ANSconduction
ground fires are - ANSsmoldering and creeping by behavior
difficult to extinguish
what heat transfer effects backing fire the most - ANSradiation
3 ways convection spreads fire - ANSspotting, wind, direct flame contact, surface to arial fuels
what heat transfer has the most influence on tree limbs - ANSconvection
what forms of mass transport for firebrands on wild land fires - ANSwind, gravity, convection
3 firebrands effected by gravity - ANSpine cones, rocks, logs
what are the requirements for long range spotting - ANSconvection and upper level wind
define flame length - ANSthe distance measured from the tip of the flame to the middle of the
flaming zone at the base of the fire.
define flame height - ANSflame height is the average height of flames as measured on a vertical axis
nearly all weather occurs within - ANStroposphere
the instruments used to measure atmospheric pressure - ANSaneroid barometer
mercury barometer
nearly half the weight or mass of the atmosphere is concentrated - ANSin the lowest 18,000 feet of
the troposphere
, air pressure __________ approximately _______________ every 1000 ft of elevation increase. -
ANSdecreases, 1 inch of mercury
where do fire behavior predictions describe the average flame length - ANShead flaming fire front
flame length is a visual indicator of - ANSfire line intensity
6 primary fuel factors that effect ignition in a wild land fire - ANSmoisture, size and shape,
arrangement,compactness, temperature
what length is a chain - ANS66ft.
how many chains in a mile - ANS80
how many chains in an acre - ANS10sq chains
list factors that predicts fireline intensity - ANSBTU per foot per second
heat output at flame front
rate of energy release
indicated flame lengths
fuel factors that have the most effect on fireline intensity - ANSfuel loading
compaction,
arrangement
fuel moisture
fire environment that cause the most rapid changes in the rate of spread - ANSfuel type
wind
steepness of the slope
Convection from a fire can - ANScreate cumulus clouds
Correctly Confirmed Answers
LCES L stands for - ANSlookouts
LCES C stands for - ANScommunications
LCES E stands for - ANSEscape routes
LCES s stands for - ANSsafety zones
5 whether factors that effect fire behavior - ANSTemperature, Relative humidity, stability, wind,
precipitation
5 topographic factors that effect fire behavior - ANSelevation, aspect, slope, shape, position of slope
8 fuel factors that effect fire behavior - ANSfuel load
size and shape
compactness
horizontal continuity
vertical continuity
chemical content
fuel moisture
fuel temperature
which of the three components of fire environment changes the most rapidly over time & space -
ANSwhether
which of the three components of the fire environment is the least variable - ANStopography
,which fuel characteristics vary rapidly over time and space - ANStemperature & moisture
heat transfer that most influences spread of a ground fire - ANSconduction
ground fires are - ANSsmoldering and creeping by behavior
difficult to extinguish
what heat transfer effects backing fire the most - ANSradiation
3 ways convection spreads fire - ANSspotting, wind, direct flame contact, surface to arial fuels
what heat transfer has the most influence on tree limbs - ANSconvection
what forms of mass transport for firebrands on wild land fires - ANSwind, gravity, convection
3 firebrands effected by gravity - ANSpine cones, rocks, logs
what are the requirements for long range spotting - ANSconvection and upper level wind
define flame length - ANSthe distance measured from the tip of the flame to the middle of the
flaming zone at the base of the fire.
define flame height - ANSflame height is the average height of flames as measured on a vertical axis
nearly all weather occurs within - ANStroposphere
the instruments used to measure atmospheric pressure - ANSaneroid barometer
mercury barometer
nearly half the weight or mass of the atmosphere is concentrated - ANSin the lowest 18,000 feet of
the troposphere
, air pressure __________ approximately _______________ every 1000 ft of elevation increase. -
ANSdecreases, 1 inch of mercury
where do fire behavior predictions describe the average flame length - ANShead flaming fire front
flame length is a visual indicator of - ANSfire line intensity
6 primary fuel factors that effect ignition in a wild land fire - ANSmoisture, size and shape,
arrangement,compactness, temperature
what length is a chain - ANS66ft.
how many chains in a mile - ANS80
how many chains in an acre - ANS10sq chains
list factors that predicts fireline intensity - ANSBTU per foot per second
heat output at flame front
rate of energy release
indicated flame lengths
fuel factors that have the most effect on fireline intensity - ANSfuel loading
compaction,
arrangement
fuel moisture
fire environment that cause the most rapid changes in the rate of spread - ANSfuel type
wind
steepness of the slope
Convection from a fire can - ANScreate cumulus clouds
