Chapter 17 Flashcards

1
Q

Wildland fires are

A

most often starts by lightning

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2
Q

Wildland fires are affected by

A

the rate of fire spread and fire intensity

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3
Q

Rate of fire spread

A

is dynamic and complex. Fire spread is affected by
types of fuel burning
the slope or aspect at which the fire is burning
water conditions

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4
Q

Fire intensity

A

describes how hot a fire is burning.

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5
Q

Forest fire

A

occurs in area containing heavy fuels and higher levels of vegation such as timbers

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6
Q

Brush fire

A

occurs primarily in mid level vegetation

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7
Q

Groundcover fire

A

fire primarily involves low level vegetation ( grasses and other light fuels)

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8
Q

Fire in high level vegetation may

A

initially burn relatively slowly, they produce much more heat than the other two types of wildland fires.

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9
Q

Forest fires: Information should include the areas

A

Wind speed and directions
Air temperature and probable or expected changes
Humidity
Approaching or expected weather fronts or conditions

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10
Q

Crown fires

A

fire works it way up to and rapidly spread across the treetops

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11
Q

Timbers

A

is another high level vegetation fire hazard

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12
Q

Snag

A

Trees that have fallen but are hung up in other trees

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13
Q

(Brush fires) mid-level vegetation fires

A

grow and travel faster but the do no generate the high temps that forest fires do.

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14
Q

Brush fires also tend to occur in

A

more closely to wildland urban interface areas

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15
Q

The primary hazard of brush fire

A

is the weather

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16
Q

The next hazard of brush fire

A

is fire spread

17
Q

Every fire fighter must be aware of and understand how the weather affects the firefighting effort at brush fire

A

Wind speed and direction
temperature
Humidity
Expected weather changes

18
Q

Groundcover fires are the

A

Fastes growing and moving type of wild land fire, but they produce the least amount of heat.

19
Q

Every fire fighter must consider the area’s in ground cover fire

A
Weather conditions 
Fire spread
Extinguishing methods and agents
Accountability
Condition of personnel.
20
Q

The decision as to who will do the evacuating

A

is often dictated by the fire.

21
Q

Probably the most important issue regarding an evacuation is

A

when to order it

22
Q

Wildland fire extinguishment operations should begin

A

by working up the flanks from with in the burned area, and then working towards the head.

23
Q

The head of a wildland fire is

A

the fast growing and moving part of the fire.

24
Q

When water is available and accessible

A

crews should saturate a perimeter that extends at least 50 ft.