S-290 Unit 1: The Fire Environment 100% correct answers passed
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S-290 Unit 1: The Fire Environment
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S-290 Unit 1: The Fire Environment
S-290 Unit 1: The Fire Environment 100% correct answers passed
What are the three components of the wildland fire environment? -
ANSWER-Weather, Topography, Fuels
What are the three methods of heat transfer? - ANSWER-Conduction,
Convection, Radiation
Conduction - ANSWER-Direct transfer of heat...
S-290
Unit
1:
The
Fire
Environment
What
are
the
three
components
of
the
wildland
fire
environment?
-
ANSWER-Weather,
Topography,
Fuels
What
are
the
three
methods
of
heat
transfer?
-
ANSWER-Conduction,
Convection,
Radiation
Conduction
-
ANSWER-Direct
transfer
of
heat
from
one
molecule
of
matter
to
another.
Example:
Cast
iron
pan
handle
too
hot
to
touch.
(Wood
is
a
poor
conductor
of
heat)
Convection
-
ANSWER-The
transfer
of
heat
resulting
from
the
motion
of
air
or
fluid.
Example:
Column
of
smoke
rising
through
the
atmosphere
or
fire
spread
from
surface
to
aerial
fuels.
Radiation
-
ANSWER-Transmission
of
heat
energy
by
electromagnetic
waves
from
heat
source
to
absorbing
material.
Example:
Heat
from
the
sun
or
preheating
of
fuels
ahead
of
the
flaming
front.
What
are
the
three
methods
of
mass
transport
of
firebrands
on
a
wildland
fire?
-
ANSWER-Convection
(Embers
moved
ahead
of
the
fire
by
a
convection
column),
Wind
,
Gravity
(rollout/flaming
logs)
What
is
the
relationship
between
flame
height/length
and
fireline
intensity?
-
ANSWER-4x
flame
height
required
for
safety
zone,
if
flame
length
exceeds
flame
height,
go
with
the
bigger
distance
for
safety
zone.
FLAME
LENGTH
is
used
to
estimate
fireline
intensity.
What
is
fireline
intensity?
-
ANSWER-rate
of
heat
released
per
foot
of
fire
front
per
second
(Btu/feet/second)
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