CBM Fire Behavior & Ecology

Question 1

Which factor has the greatest influence on wildland fire spread?

Accepted Answer

Wind

Answer

Wind is the most significant factor influencing fire spread as it provides oxygen, pushes flames forward, and carries embers.

Question 2

What is the role of fuel moisture in fire behavior?

Accepted Answer

It reduces fire intensity

Answer

Higher fuel moisture slows combustion because water in vegetation absorbs heat energy before ignition occurs.

Question 3

Which fuel type typically burns the fastest?

Accepted Answer

Fine fuels like grass

Answer

Fine fuels such as grasses and pine needles ignite easily and burn quickly due to their high surface-area-to-volume ratio.

Question 4

How does slope affect fire spread?

Accepted Answer

It increases fire spread uphill

Answer

Fires move more quickly uphill because heat rises and preheats the fuel above, making it more flammable.

Question 5

Why is fire important in maintaining certain ecosystems?

Accepted Answer

It supports ecological balance

Answer

Fire recycles nutrients, reduces invasive species, and promotes regeneration of fire-adapted plants.

(CBM) Certified Burn Manager Practice Test