100+ Free Wildland Firefighter I Practice Questions

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How does relative humidity generally affect fine dead fuel moisture and fire behavior?

Higher humidity raises fuel moisture and reduces ignition potential

Humidity has no effect on fine dead fuels

Higher humidity lowers fuel moisture and increases spread

Humidity only affects live fuels

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Key Facts: Wildland Firefighter I Exam

~50

Questions

NFPA 1140 Ch. 4 written exam

70%

Passing Score

Pro Board / IFSAC

60 min

Time Limit

Written exam

NFPA 1140

Standard

Chapter 4

Standard Firefighting Orders

Wildland safety doctrine

Watch Out Situations

Wildland safety doctrine

NFPA 1140 Wildland Firefighter I has ~50 multiple-choice questions, 60 minutes, and a 70% passing score. The exam is accredited through Pro Board and IFSAC and tests wildland fire behavior, NFPA 1977 PPE and fire shelter (PMS-310), suppression tactics, hand tools, water and Class A foam, the LCES safety system with the 10 Standard Firefighting Orders and 18 Watch Out Situations, and ICS strike team / resource concepts.

Sample Wildland Firefighter I Practice Questions

Try these sample questions to test your Wildland Firefighter I exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which three elements make up the wildland fire behavior triangle?

A.Fuel, weather, and topography

B.Fuel, oxygen, and heat

C.Heat, weather, and humidity

D.Fuel, weather, and chemical chain reaction

Explanation: The wildland fire behavior triangle is fuel, weather, and topography. These three environmental factors interact to control fire spread, intensity, and direction. The combustion triangle (fuel, oxygen, heat) describes what burns; the wildland fire behavior triangle describes how a fire will behave on the landscape.

2Approximately how much does rate of spread increase for every 30% increase in slope, all other factors equal?

A.No change

B.About 50%

C.Approximately doubles

D.Decreases by half

Explanation: As a rule of thumb, rate of spread approximately doubles for every 30% increase in slope. Heat preheats fuel above the fire more efficiently on steeper slopes, and flames lean closer to unburned uphill fuel, accelerating ignition. This is why uphill runs are especially dangerous and why escape routes uphill should be treated with extreme caution.

3Which NFFL fuel model group typically produces the fastest rate of spread under normal burning conditions?

A.Grass models (1-3)

B.Brush models (4-7)

C.Timber litter models (8-10)

D.Slash models (11-13)

Explanation: Grass fuel models 1-3 produce the fastest rates of spread because fine, cured grass ignites readily and carries fire rapidly with even modest wind. Brush models can produce higher flame lengths but generally spread more slowly than open grass. Timber litter models 8-10 burn most slowly with low flame lengths under normal conditions.

4How does relative humidity generally affect fine dead fuel moisture and fire behavior?

A.Higher humidity raises fuel moisture and reduces ignition potential

B.Higher humidity lowers fuel moisture and increases spread

C.Humidity has no effect on fine dead fuels

D.Humidity only affects live fuels

Explanation: Fine dead fuels (1-hour timelag fuels like grass and pine needles) exchange moisture rapidly with the atmosphere. As relative humidity rises, fine dead fuel moisture rises and ignition probability and rate of spread decrease. Low humidity (often below 25%) is a key indicator of dangerous fire behavior.

5A drainage that funnels heat, smoke, and flame from a fire below into a tight V-shape is called a:

A.Saddle

B.Box canyon or chimney

C.Bench

D.Chute

Explanation: A box canyon (or chimney) acts as a vertical flue, drawing in air at the bottom and concentrating heat and flame as fire moves uphill. Firefighters should not work above or in box canyons during active fire. Several historical tragedies have occurred in these terrain features.

6Which wind type is driven by surface heating and typically moves upslope during the day and downslope at night?

A.Foehn wind

B.Diurnal slope wind

C.Frontal wind

D.Microburst

Explanation: Diurnal slope winds are caused by daily heating and cooling. During the day, sun warms slopes and air rises, producing upslope/upcanyon winds. At night, slopes cool and denser air drains downhill, producing downslope/downcanyon winds. Recognizing the daily wind shift helps predict fire behavior.

7The Energy Release Component (ERC) in the National Fire Danger Rating System primarily reflects:

A.Daily wind speed

B.Available energy per unit area in the flaming front

C.Live fuel ignition probability

D.Probability of lightning

Explanation: ERC represents the potential energy released per unit area in the flaming front and is strongly tied to dead fuel moisture in larger timelag classes. High ERC values indicate persistent drying and a high-energy fire environment. ERC is a key drought/dryness indicator used in fire planning.

8The Burning Index (BI) in NFDRS is most directly related to:

A.Probability of ignition

B.Estimated flame length at the head of a fire

C.Live fuel moisture

D.Lightning activity level

Explanation: BI is calculated from spread component and energy release component and provides an estimate of flame length at the head of a fire. Higher BI values translate to higher expected flame lengths and more difficult suppression. BI is widely used for preparedness staffing decisions.

9Which part of a wildland fire typically spreads fastest and exhibits the most intense fire behavior?

A.The heel

B.The flanks

C.The head

D.The rear

Explanation: The head of the fire is the part spreading in the direction of the prevailing wind or upslope. It produces the highest rates of spread, the longest flame lengths, and the most intense fire behavior. Direct attack on the head is rarely safe except in low-intensity grass fires.

10A new fire ignited ahead of the main fire by burning embers carried in the convection column is called:

A.A slop-over

B.A spot fire

C.A bump-up

D.A flare-up

Explanation: Spot fires are new ignitions caused by airborne firebrands. Long-range spotting can leapfrog control lines and put crews working in front of the main fire at extreme risk. Lookouts must continuously scan for spots both in and outside the fireline.

About the Wildland Firefighter I Exam

The NFPA 1140 Wildland Firefighter I exam (NFPA 1140 Chapter 4) certifies entry-level wildland firefighters. The written exam contains approximately 50 multiple-choice questions, allows 60 minutes, and requires a 70% passing score. Content covers wildland fire behavior (fuels, weather, topography, fuel models 1-13, drought indices), NFPA 1977 wildland PPE and fire shelter (PMS-310), suppression tactics (direct/indirect attack, anchor point, flanking, hot-spotting, mop-up), hand tools (Pulaski, McLeod, combi tool, shovel, fire rake, chainsaw), water and Class A foam operations, LCES with the 10 Standard Firefighting Orders and 18 Watch Out Situations, and ICS strike teams and resources.

Questions

50 scored questions

Time Limit

60 min

Passing Score

70%

Exam Fee

Varies by state/agency (NFPA 1140 — Pro Board / IFSAC)

Wildland Firefighter I Exam Content Outline

18%

Wildland Fire Behavior

Fuel, weather, topography, fuel models 1-13, slope effect, wind, fire spread, eddies, and drought indices (ERC and BI).

16%

Personal Protective Equipment

NFPA 1977 wildland PPE — Nomex shirt and pants, leather boots, helmet, gloves, shroud, and PMS-310 fire shelter.

16%

Suppression Tactics

Direct vs indirect attack, anchor point, flanking, hot-spotting, and mop-up procedures.

14%

Hand Tools

Pulaski, McLeod, combi tool, shovel, fire rake, blade hot rules, and chainsaw use on the fireline.

14%

Water & Foam

Backpack pumps, progressive hose lays, gated wye, Class A foam, and hot-spotting with water.

12%

Safety (LCES)

Lookouts, Communications, Escape Routes, Safety Zones, the 10 Standard Firefighting Orders, the 18 Watch Out Situations, and the Common Denominators of fire behavior on tragedy fires.

10%

Strike Teams & Resources

ICS, Type 2 and Type 1 hand crews, hand crew vs engine module, and dozer resources.

How to Pass the Wildland Firefighter I Exam

What You Need to Know

Passing score: 70%
Exam length: 50 questions
Time limit: 60 min
Exam fee: Varies by state/agency

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Wildland Firefighter I Study Tips from Top Performers

1Memorize the 10 Standard Firefighting Orders and 18 Watch Out Situations verbatim — they are heavily tested

2Drill LCES (Lookouts, Communications, Escape Routes, Safety Zones) until it is automatic before every assignment

3Know that slope doubles rate of spread for every 30% increase in slope — topography questions are common

4Practice fire shelter deployment (PMS-310) until you can deploy in under 25 seconds

5Learn the 13 NFFL fuel models and which spread fastest (grass models 1-3) vs slowest (timber litter 8-9)

6Understand anchor point — never start a fireline without one, because the fire can outflank you

7Direct attack is on the fire edge; indirect attack constructs line away from the edge with an unburned area between

8Class A foam reduces water surface tension and improves penetration into wildland fuels

9Type 1 hand crews are the highest-qualified (e.g., hotshots); Type 2 are less experienced

10ERC (Energy Release Component) and BI (Burning Index) are NFDRS drought/dryness indicators tied to fire intensity

Frequently Asked Questions

What is the NFPA 1140 Wildland Firefighter I exam?

It is the entry-level written and practical certification under NFPA 1140 Chapter 4 for wildland firefighters. The written portion is approximately 50 multiple-choice questions delivered through a Pro Board or IFSAC accredited fire training agency, with a 60-minute time limit and a 70% passing score.

What topics are covered on the Wildland Firefighter I written exam?

Topics include wildland fire behavior (fuels, weather, topography, fuel models 1-13, drought indices ERC/BI), NFPA 1977 PPE and the PMS-310 fire shelter, suppression tactics (direct/indirect attack, anchor point, flanking, hot-spotting, mop-up), hand tools (Pulaski, McLeod, combi tool, shovel, fire rake, chainsaw), water and Class A foam operations, the LCES safety system with the 10 Standard Firefighting Orders and 18 Watch Out Situations, and ICS strike teams and resources.

What is LCES?

LCES stands for Lookouts, Communications, Escape Routes, and Safety Zones. It is the minimum safety system every wildland firefighter must have in place before engaging a fire. A lookout watches fire behavior and weather, communications relay changes, escape routes provide a path to a safety zone, and the safety zone is a survivable location without the need for a fire shelter.

How long is the exam and what is the passing score?

The Wildland Firefighter I written exam is approximately 50 multiple-choice questions with a 60-minute time limit. Candidates must score 70% or higher to pass. A practical skills evaluation is required in addition to the written test.

Who accredits NFPA 1140 Wildland Firefighter I certification?

Certification is delivered through fire training agencies accredited by the Pro Board (National Board on Fire Service Professional Qualifications) or IFSAC (International Fire Service Accreditation Congress). Both accreditations are widely recognized for interstate and federal reciprocity.

What PPE is required for wildland firefighting?

NFPA 1977 wildland PPE includes a Nomex fire-resistant shirt and pants, leather lace-up boots at least 8 inches tall, a wildland helmet, leather gloves, a Nomex shroud or shoulder cover, and the PMS-310 new generation fire shelter. PPE is intended for radiant heat exposure on the fireline and is not a substitute for proper LCES.

How should I prepare for the exam?

Complete an NFPA 1140 Chapter 4 training program through a Pro Board or IFSAC accredited agency. Memorize the 10 Standard Firefighting Orders and 18 Watch Out Situations, practice fire shelter deployment, and drill LCES until it is automatic. Use timed practice questions covering all seven topic areas to identify and fix weak knowledge.

100+ Free Wildland Firefighter I Practice Questions

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