S-290
Name the 5 weather factors that effect fire behavior. (WARPT) – answer Wind speed
and direction
Atmospheric stability
Relative Humidity
Precipitation
Temperature
Name the 5 topographic factors that affect fire behavior - answer Elevation
Position on slope
Aspect
Shape of the country
Steepness of slope
Name the 7 fuel factors that effect fire behavior - answer Fuel loading
Size and shape
Compactness
Horizontal continuity
Vertical continuity
Chemical content
Fuel moisture and Fuel temperature
Which of the three components of fire enviornment, changes most rapidly over time and
space? - answerWeather
Which of the three components of the fire enviornment is the least variable? -
answerTopography
Which fuel characteristics vary rapidly over time and space? - answerFuel moisture and
Fuel temperature
The form of heat transfer that has the most influence on the rate of spread in a ground
fire is... - answerConduction
These fires are difficult to extinguish and have smoldering or creeping fire behavior -
answerGround Fires
What form of heat transfer has the most influence on rate of spread in a backing fire? -
answerRadiation
3 ways convection energy can spread a fire - answer1. Cause spot fires
2. Preheat fuels through air and increased direct flame contact
, 3. Increase the amount of oxygen introduced on a fire
What form of heat transfer has the most influence on tree limbs - answerConvection
List three forms of mass transport of firebrands on wildland fires - answer1. Convection
2. Wind
3. Gravity
Give 3 examples of fire brands affected by gravity - answer1. pine cones
2. yuccas
3. logs
Three requirements for long range spotting - answer1. Strong convective influence to
create fire brands
2. High winds to spread the fire brands
3. A receptive fuel bed
Define Flamelength - answerThe distant measured from the tip of the flame to the
middle of the flaming zone at base of fire.
Where do fire behavior predictions describe the average flame length? - answerHead of
the fire/flamefront
Flame length is a visual indicator of - answerFireline intensity/ BTU per foot per second
6 Primary fuel factors that affect ignition of a wildland fire - answer1. moisture
2. size and
3. shape
4. arrangement
5. compactness
6. temperature
BTU per foot per second, rate of energy release, indicated by flame length, and
represents the ead output at the flame front is.... - answerFireline Inensity
A chain is - answer66 feet
1 Mile equals how many chains - answer80 chains
How many square chains in an acre - answer10 sq. chains
Fireline intensity is affected by... - answer1. Fuel loading
2. Compaction
3. Arrangement
4. Fuel moisture
5. Rate of spread
Name the 5 weather factors that effect fire behavior. (WARPT) – answer Wind speed
and direction
Atmospheric stability
Relative Humidity
Precipitation
Temperature
Name the 5 topographic factors that affect fire behavior - answer Elevation
Position on slope
Aspect
Shape of the country
Steepness of slope
Name the 7 fuel factors that effect fire behavior - answer Fuel loading
Size and shape
Compactness
Horizontal continuity
Vertical continuity
Chemical content
Fuel moisture and Fuel temperature
Which of the three components of fire enviornment, changes most rapidly over time and
space? - answerWeather
Which of the three components of the fire enviornment is the least variable? -
answerTopography
Which fuel characteristics vary rapidly over time and space? - answerFuel moisture and
Fuel temperature
The form of heat transfer that has the most influence on the rate of spread in a ground
fire is... - answerConduction
These fires are difficult to extinguish and have smoldering or creeping fire behavior -
answerGround Fires
What form of heat transfer has the most influence on rate of spread in a backing fire? -
answerRadiation
3 ways convection energy can spread a fire - answer1. Cause spot fires
2. Preheat fuels through air and increased direct flame contact
, 3. Increase the amount of oxygen introduced on a fire
What form of heat transfer has the most influence on tree limbs - answerConvection
List three forms of mass transport of firebrands on wildland fires - answer1. Convection
2. Wind
3. Gravity
Give 3 examples of fire brands affected by gravity - answer1. pine cones
2. yuccas
3. logs
Three requirements for long range spotting - answer1. Strong convective influence to
create fire brands
2. High winds to spread the fire brands
3. A receptive fuel bed
Define Flamelength - answerThe distant measured from the tip of the flame to the
middle of the flaming zone at base of fire.
Where do fire behavior predictions describe the average flame length? - answerHead of
the fire/flamefront
Flame length is a visual indicator of - answerFireline intensity/ BTU per foot per second
6 Primary fuel factors that affect ignition of a wildland fire - answer1. moisture
2. size and
3. shape
4. arrangement
5. compactness
6. temperature
BTU per foot per second, rate of energy release, indicated by flame length, and
represents the ead output at the flame front is.... - answerFireline Inensity
A chain is - answer66 feet
1 Mile equals how many chains - answer80 chains
How many square chains in an acre - answer10 sq. chains
Fireline intensity is affected by... - answer1. Fuel loading
2. Compaction
3. Arrangement
4. Fuel moisture
5. Rate of spread
