what is a wildfire
an uncontrolled fire in open countryside or forest
what are some human causes of wildires
electric cooking equipment
campfire
fireworks
cigarettes
arson
what are the natural causes of wildfires
lightning
drought
what is the fire triangle
The fire triangle shows the 3 things needed for a fire to start and continue
what are the 3 components of the fire triangle
heat
fuel
oxygen
what is the fuel in a wildfire
trees, leaves, twigs, fields, and homes
what is fuel load and how can it affect the fire
the amount of flammable material that surrounds a fire
lots of fuel load means fire will more more intensley and spread faster
but a smaller fuel load means the fire will burn slowly with a low intensity
t or f the wetter the fuel the more flammable
false the drier the fuel the more flammable
t or f big fuel material like logs burn faster than small fuel material like leaves
false
what is the heat in a wildfire
fuel on the ground gets heated and dried by the sun
warmer temps allow fuel to burn and ignite faster
why do wildfires tend to rage in the afternoon
highest temp means hotter and drier fuel which ignites faster
how does oxygen effect the wildfire
the stronger wind blows the faster the fire spreads
wind can also change the direction of a fire and gust can raise the fire into the trees creating a crown fire
what is spotting
when a wildfire throws embers into the air and creates additional fires
what is a ground fire
burn under the ground or soil
spread slowly but last for long time
what is a surface fires
burn on ground surface
burn grass bushes and fallen leaves
most common and easiest to control
what is a crown fire
burn on the top of trees
spread very fast
most destructive and hardest to control
why are wild fires more likely to occourr during droughts
plants leaves and grass become very dry
and drier fuel catches fire easily
hot weather heats and dires fuel
strong winds spread flames faster
how can education help reduce wildfire casulities
teaches people what to do in a fire
what is airdrop and how does it help
when supplies like water or retardant (very pricey) are delivered from an aircraft
what are fire engines
engines that hold lots of water to put out wildfires
-expensive
what are smoke jumpers
firefighters are parachuted into the danger zone(near the fire) and try to estinguish small fires
what are fire control lines
a line of fire fighters that remove fuel so fire can’t spread easily to create a fire line
what is evacuation
evacuating people
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end of topic assesment revision16
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end of topic assesment 213
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measuring weather and clouds43
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mid term assessment practice yr828
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asia random questions7
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Dhravi7
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africa general20
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education in ghana9
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malaria11
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HIV and AIDs10
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desertification13
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the us mexico wall11
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wildfires23
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Fracking and tar sands23
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asia9
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Dharavi Slums,India16
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rainforests and malaysia27
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malaysias sustainablity programs13
