Q1 Flashcards
(17 cards)
A wind blowing to Flagstaff from Phoenix is called:
a north wind
a south wind
a west wind
an east wind
A south wind
T OR F
A small stick has a higher surface area/volume ratio than a large log.
True
T OR F
All else being held equal, as temperature goes up, relative humidity goes up.
TRUE. THEY HAVE AN INVERSE RELATIONSHIP
T OR F
The smaller the difference between dry bulb temperature and wet bulb temperature, the higher the relative humidity
TRUE
Which phases of combustion are endothermic?
Preignition
Combustion
Extinction
Dehydration
Pyrolysis
Flaming combustion
Preignition
Dehydration
Pyrolysis
What are the tree sides of the fire fundamental triangle?
oxygen, fuel, and heat
Name two ways Native Americans used fire
Native Americans have used fire to replenish the land, they would burn certain areas and later those areas will bring out new shoots to attract more game. They had also used fire to drive their game to certain areas.
What era was was right after World War II?
Mass Fire Era
Frontier Fire Era
Backcountry Fire Era
Wilderness Fire Era
Intermix Fire Era
Mass Fire Era
General winds are driven by:
low pressure systems
high pressure systems
terrain
slopes and valleys
low pressure systems
high pressure systems
What does an inversion do to RH and temperature?
As you go up in elevation and are under the inversion, the temperature increases and RH decreases.
As you go up in elevation and are under the inversion, the temperature decreases and RH increases.
As you go up in elevation and are under the inversion, the temperature decreases and RH decreases.
As you go up in elevation and are above the inversion, the temperature increases and RH decreases.
As you go up in elevation and are under the inversion, the temperature increases and RH decreases.
Foehn winds cause which of the following:
fast downhill winds
very dry winds
increased relative humidity
fast downhill winds
very dry winds
What are the three sides for the fire environment triangle?
weather, topography, fuel
The __________ phase of combustion is the transition point between endothermic and exothermic reactions.
ignition
T or F
Smoldering combustion is hotter than flaming combustion and creates more smoke.
False
What are the differences between the 13 Anderson Fuel Models and the “new” 40 Scott and Burgan fuel models
The “new” 40 predict only the severe period of the fire season
The “new” 40 have dynamic fuel models for live fuel moisture
The “new” 40 work better in high humidity areas
The original 13 covered the diverse array of wildland fuels well
The “new” 40 were designed to help model fuel treatments
The “new” 40 have dynamic fuel models for live fuel moisture
The “new” 40 work better in high humidity areas
The “new” 40 were designed to help model fuel treatments
Which of the following happened in the Era of Wilderness Fires (1970-1989)?
The civilian conservation corps provide human power for fire fighting
The 10am policy is revoked
Smokey the bear is established with “only you can prevent wildfires”
war time machinery is
available to fight wildfire in the backcountry
The weeks act allowed the expansion of the National Forest System.
The 10am policy is revoked
Smokey the bear is established with “only you can prevent wildfires”
__________ and __________
, two pieces of topography, affect fire behavior as they change if vegetation is cooler and wetter or hotter and drier.
aspect and elevation
