Wildfires Flashcards
what is a wildfire?
uncontrolled fire in combustable vegetation that occurs in the countryside or wilderness area
other names for wildfire?
brush fee
bush fire
grass fire
peat fire
how does it differ from other fires?
extensive size
speed
unexpectedly change directions
ability to jump gaps e.g. roads, rivers, fire breaks
where do wildfires occur?
countries with
Mediterranean climate
eg
portugal, spain, france, greece
what two key features do Mediterranean climate places have?
Mild wet winters:
ideal for growing vegetation forests
hot dry summers:
dries out plant materials
ideal fuel fire
Natural Causes
lightning
volcanic ash
drought
high temp
human causes
matches slash and burn camp fires cigarettes arson broken glass
how can climatic features of an area cause wildfires?
CLIMATE
wildfires spread quickly during long period of hot dry weather e.g. drought
fallen leaves AND BRANCHES DRY OUT: FUEL
strong winds fan flames
what is
FIRE WEATHER
conditions
that encourage fires
to break out and spread
long period of high pressure
and temperatures
no clouds or rain
strong hot dry winds