Intermediate Wildland Fire Behavior:S-290 questions
with verified answers
>11' Flame Length Ans✓✓✓ Crowing, spotting and major fire runs are probable.
Control efforts at the head of the fire are ineffective.
1 hour fuel Ans✓✓✓ 0 inch to 1/4 in diameter
10 hour fuel Ans✓✓✓ 1/4 inch to 1 inch in diameter
100 hour fuel Ans✓✓✓ 1 inch to 3 inch in diameter
1000 hour fuel Ans✓✓✓ 3 inch to 8 inch in diameter
4' Flame Length Ans✓✓✓ Fires can generally be attacked at the head or flanks by
persons using hand tools. hand-line should hold the fire.
4'-8' Flame Length Ans✓✓✓ Fires are too intense for direct attack on the head by
person using hand tools. Hand-line cannot be relied on to hold fire.
8'-11' Flame Length Ans✓✓✓ Fires may present serious control problems;
torching out, crowning and spotting. Control efforts at the head will probably be
ineffective.
A fire advances through canopies of brush and tress is known as a? Ans✓✓✓
Crown Fire
, A slope wind is caused by... Ans✓✓✓ Warm air rising and cold air settling.
Air flow down a mountain side will... Ans✓✓✓ Warm
Air flows clockwise around low pressure systems and counterclockwise around
high pressure systems. Ans✓✓✓ True
As air sinks, it... Ans✓✓✓ Increases in pressure, warms and compresses.
Bends in canyons are likely places for wind eddies to form. Ans✓✓✓ True
Black soil reflects more of the sun's energy than snow. Ans✓✓✓ False
Cloudiness has little affect on relative humidity and temperature. Ans✓✓✓ False
Cold air will have __________ density than warm air at the same elevation.
Ans✓✓✓ Higher
Conduction Ans✓✓✓ The transfer of heat from one molecule to another.
Convection Ans✓✓✓ The transfer of heat from the motion of air.
Convergence Lifting Ans✓✓✓ Rising air currents due to compression from air
coming to a single point, such as in the center of a low pressure area.
with verified answers
>11' Flame Length Ans✓✓✓ Crowing, spotting and major fire runs are probable.
Control efforts at the head of the fire are ineffective.
1 hour fuel Ans✓✓✓ 0 inch to 1/4 in diameter
10 hour fuel Ans✓✓✓ 1/4 inch to 1 inch in diameter
100 hour fuel Ans✓✓✓ 1 inch to 3 inch in diameter
1000 hour fuel Ans✓✓✓ 3 inch to 8 inch in diameter
4' Flame Length Ans✓✓✓ Fires can generally be attacked at the head or flanks by
persons using hand tools. hand-line should hold the fire.
4'-8' Flame Length Ans✓✓✓ Fires are too intense for direct attack on the head by
person using hand tools. Hand-line cannot be relied on to hold fire.
8'-11' Flame Length Ans✓✓✓ Fires may present serious control problems;
torching out, crowning and spotting. Control efforts at the head will probably be
ineffective.
A fire advances through canopies of brush and tress is known as a? Ans✓✓✓
Crown Fire
, A slope wind is caused by... Ans✓✓✓ Warm air rising and cold air settling.
Air flow down a mountain side will... Ans✓✓✓ Warm
Air flows clockwise around low pressure systems and counterclockwise around
high pressure systems. Ans✓✓✓ True
As air sinks, it... Ans✓✓✓ Increases in pressure, warms and compresses.
Bends in canyons are likely places for wind eddies to form. Ans✓✓✓ True
Black soil reflects more of the sun's energy than snow. Ans✓✓✓ False
Cloudiness has little affect on relative humidity and temperature. Ans✓✓✓ False
Cold air will have __________ density than warm air at the same elevation.
Ans✓✓✓ Higher
Conduction Ans✓✓✓ The transfer of heat from one molecule to another.
Convection Ans✓✓✓ The transfer of heat from the motion of air.
Convergence Lifting Ans✓✓✓ Rising air currents due to compression from air
coming to a single point, such as in the center of a low pressure area.
