EAPS 106 WILDFIRES AND METEORITES
EXAM 3 QUESTIONS AND ANSWERS
RATED A+
The original policy of the U.S. Forest Service toward
fighting wildfires - answer-Fight them whenever and
wherever they occur, following the disastrous great fire of
1910 their original response to wildfires was to
aggressively fight all wildfires.
Which wildfire was the largest to occur in United States
history. - answer-The great fire of 1910 burned 3 million
acres in the northwest in two days, killed 87 people, 78 of
whom were firefighters, prompting the National Forest
Service to start fighting all wildfires, Caused by lightning
storms, strong winds.
Whether lightning or humans start more wildfires. -
answer-85% of all wildfires in the US are caused by
humans (the rest by lightning)
The reasons why fires started by lightning tend to burn
more acres. - answer-Occurs in more remote areas, goes
longer before being noticed, more difficult to fight, often
,left to burn as a natural process, Human-lit fires have
equipment nearby (typically)
What influences the potential for a wildfire to spread. -
answer-The potential for a wildfire to spread depends on
the type of vegetation (some fuels burn more easily),
topography (fires burn faster uphill), and weather (hotter
and dryer means faster burn).
Why the highest percentage of human ignited fires occur
in the southeastern U.S. - answer-The southeast is hot
and densely populated.
What surface and crown fires are. - answer-- Surface fires
involve grasses, pine needles, and shrubs. The large
surface area to volume ratio of these fuels allow them to
burn more easily and spread more rapidly. - Crown fires
are those in which flames reach the top (crown) of trees
where fine branches and needles can burn very rapidly.
They are the hottest and fastest moving of all wildfires and
extremely difficult to fight.
The three stages of a wildfire. - answer-Fire Triangle:
Heat, Oxygen, Fuel. Preignition: Heat of fuels causes
them to lose moisture, making them more combustible.
, Combustion: Hotter temperatures cause fuels to release
gases that combine with oxygen in a chemical reaction
that releases more heat, leading tot a chain reaction.
Smoldering: Ash cover leads to slow, low temperature
burning and inhibits new fuels from lighting
What cause fires to spread faster by directing flames to
new fuels. - answer-Strong winds and steep topography
can cause fires to spread faster by directing flames to new
fuels.
the mascot used by the U.S. Forest Service to promote
fighting all forest fires. - answer-Smokey the Bear. This
lead to a generation of massively destructive fires.
Why fighting smaller fires lead to much bigger ones. -
answer-If there are no smaller fires to remove the
underbrush and fuel that builds up, they can lead to
massive fires due to the built up fuel. In typical forests,
every year without fire adds the equivalent of 300 gallons
of gasoline per acre.
The lesson of The Legend of Coyote in terms of wildfires. -
answer-- Produced a tale about life coming from death
and destruction?
EXAM 3 QUESTIONS AND ANSWERS
RATED A+
The original policy of the U.S. Forest Service toward
fighting wildfires - answer-Fight them whenever and
wherever they occur, following the disastrous great fire of
1910 their original response to wildfires was to
aggressively fight all wildfires.
Which wildfire was the largest to occur in United States
history. - answer-The great fire of 1910 burned 3 million
acres in the northwest in two days, killed 87 people, 78 of
whom were firefighters, prompting the National Forest
Service to start fighting all wildfires, Caused by lightning
storms, strong winds.
Whether lightning or humans start more wildfires. -
answer-85% of all wildfires in the US are caused by
humans (the rest by lightning)
The reasons why fires started by lightning tend to burn
more acres. - answer-Occurs in more remote areas, goes
longer before being noticed, more difficult to fight, often
,left to burn as a natural process, Human-lit fires have
equipment nearby (typically)
What influences the potential for a wildfire to spread. -
answer-The potential for a wildfire to spread depends on
the type of vegetation (some fuels burn more easily),
topography (fires burn faster uphill), and weather (hotter
and dryer means faster burn).
Why the highest percentage of human ignited fires occur
in the southeastern U.S. - answer-The southeast is hot
and densely populated.
What surface and crown fires are. - answer-- Surface fires
involve grasses, pine needles, and shrubs. The large
surface area to volume ratio of these fuels allow them to
burn more easily and spread more rapidly. - Crown fires
are those in which flames reach the top (crown) of trees
where fine branches and needles can burn very rapidly.
They are the hottest and fastest moving of all wildfires and
extremely difficult to fight.
The three stages of a wildfire. - answer-Fire Triangle:
Heat, Oxygen, Fuel. Preignition: Heat of fuels causes
them to lose moisture, making them more combustible.
, Combustion: Hotter temperatures cause fuels to release
gases that combine with oxygen in a chemical reaction
that releases more heat, leading tot a chain reaction.
Smoldering: Ash cover leads to slow, low temperature
burning and inhibits new fuels from lighting
What cause fires to spread faster by directing flames to
new fuels. - answer-Strong winds and steep topography
can cause fires to spread faster by directing flames to new
fuels.
the mascot used by the U.S. Forest Service to promote
fighting all forest fires. - answer-Smokey the Bear. This
lead to a generation of massively destructive fires.
Why fighting smaller fires lead to much bigger ones. -
answer-If there are no smaller fires to remove the
underbrush and fuel that builds up, they can lead to
massive fires due to the built up fuel. In typical forests,
every year without fire adds the equivalent of 300 gallons
of gasoline per acre.
The lesson of The Legend of Coyote in terms of wildfires. -
answer-- Produced a tale about life coming from death
and destruction?
