Chapter 2- Wildland Fire Behavior

Question 1

What are the diameters of 10-hour fuels?

Answer 1

1/4 inch to 1 inch

Question 1

What are examples of topographical features in Florida that may affect fire behavior?

Answer 1

Steep road bank

Lake or canal levee

Barrow pit or mine

Question 2

Warm air generally does what?

Answer 2

Rises

Question 3

How do winds spiral into low pressure areas?

Answer 3

Counter-clockwise

Question 4

What are the three elements of the fire environment?

Answer 4

Weather
Topography
Fuels

Question 5

Lightning accounts for approximately what percentage of Florida wildfires every year?

Answer 5

19%

Question 6

What are the seven characteristics of fuel?

Answer 6

Fuel moisture 
Fuel load
Size and shape
Vertical arrangement 
Horizontal arrangement 
Compactness 
Chemical properties

Question 7

What are the three methods of heat transfer?

Answer 7

Radiant
Convection
Conduction

Question 8

What are indicators of 100% relative humidity?

Answer 8

Cloud droplets

Fog

Dew

Question 9

Air can move:

Answer 9

Vertically and horizontally

Question 10

The resistance of air to vertical motion is called what?

Answer 10

Atmospheric stability

Question 13

What is a strong downdraft that reaches the ground and forces air to spread in all directions called?

Answer 13

A microburst

Question 14

The Spread Index is largely a measure of what?

Answer 14

Wind speed and humidity

Question 16

What is the KDBI range?

Answer 16

0-800

Question 17

Timelag fuels refer to what?

Answer 17

Dead fuels

Question 18

What are the 2 most likely inversion types that will affect fire behavior in Florida?

Answer 18

Frontal and nighttime

Question 19

Generally, as temperature increases by 20 degrees Fahrenheit humidity does what?

Answer 19

Decreases by half

Question 21

The forecasted winds are generally measured at what?

Answer 21

At 20 ft above the vegetation

Question 23

Wind shifts associated with cold fronts:

Answer 23

Shift clockwise

Question 24

4 types of winds that affect wildland fires are:

Answer 24

General winds

Surface winds

Local winds

Mid-flame winds