S-130 Fire Behavior & Weather

Question 1

What factor has the greatest influence on wildfire behavior?

Accepted Answer

Tree height

Answer

Soil moisture

Answer

Wind speed and direction

Answer

Cloud cover

Question 2

Which type of weather can significantly increase wildfire risk?

Accepted Answer

Hot, dry, and windy

Answer

Rainy and humid

Answer

Cold and wet

Answer

Snowfall

Question 3

What does the term 'fuel moisture' refer to?

Accepted Answer

Water content in vegetation

Answer

Amount of water in air

Answer

Moisture in soil

Answer

Humidity in weather reports

Question 4

What is a fire whirl?

Accepted Answer

Crackling fire noise

Answer

Fire on water

Answer

Spinning fire column

Answer

Burned logs

Question 5

Which part of a wildfire spreads the fastest?

Accepted Answer

Head

Answer

Flanks

Answer

Back

Answer

Origin

Question 6

What type of slope can intensify fire spread?

Accepted Answer

Uphill

Answer

Flat terrain

Answer

Downhill

Answer

Valley floor

Question 7

Which weather condition improves firefighting conditions?

Accepted Answer

Rain

Answer

Lightning

Answer

High winds

Answer

Heat wave

Question 8

What is the primary fuel for wildfires?

Accepted Answer

Vegetation

Answer

Rocks

Answer

Soil

Answer

Water vapor

Question 9

What is an inversion layer?

Accepted Answer

Warm air over cooler air

Answer

Layer of ice on trees

Answer

Cold ground temperature

Answer

Cloud formation process