Certified Prescribed Fire Manager (CPFM) Exam — Questions and Answers

Question 1: What is the primary meteorological reason a prescribed burn may be postponed even when fuel moisture conditions are acceptable?

Fuels are too wet to burn
Wind speeds are too low for fire spread
The fire will not ignite
Smoke dispersal conditions are inadequate, risking air quality impacts (Correct answer)

Correct answer: Smoke dispersal conditions are inadequate, risking air quality impacts

Even with burnable fuels, a burn may be postponed when the Ventilation Index or mixing height is too low to safely disperse smoke away from roads, communities, or sensitive areas.

Question 2: What is the relationship between First Aid & Basic Life Support and ethical professional conduct?

Ethics is relevant only when legal issues arise
There is no connection between technical knowledge and ethics
Ethical considerations are integrated into all aspects of professional practice in this area (Correct answer)
Ethics applies only to separate, unrelated decisions

Correct answer: Ethical considerations are integrated into all aspects of professional practice in this area

Ethical considerations are deeply integrated into First Aid & Basic Life Support, as professional conduct and integrity underpin all aspects of practice in this field.

Question 3: Why is 'cold trailing' used after ignition?

To collect soil samples
To extinguish residual heat along fire edges (Correct answer)
To cool down firefighters
To mark the burn boundary with paint

Correct answer: To extinguish residual heat along fire edges

Cold trailing is a mop-up technique performed after a fire, involving carefully feeling the fire edge with bare hands or gloved hands to detect any remaining heat. Its purpose is to ensure all residual heat, embers, and smoldering materials along the fire perimeter are extinguished, preventing rekindles and ensuring the fire is completely out.

Question 4: What is the proper position for an unresponsive person who is breathing normally and has no suspected spinal injury?

Sitting upright against a tree
Flat on the back with legs raised
Face down
The recovery position on their side (Correct answer)

Correct answer: The recovery position on their side

The recovery position helps keep the airway open and allows fluids to drain from the mouth.

Question 5: When should a spot weather forecast generally be obtained for a planned burn?

Only if winds exceed 20 mph
Only during the planning stage months ahead
Within roughly 24 hours of ignition, per agency guidance (Correct answer)
Only after the test fire

Correct answer: Within roughly 24 hours of ignition, per agency guidance

Agencies generally require a current spot forecast, typically within 24 hours of ignition, for the Go/No-Go decision.

Question 6: When should the first post-fire evaluation be conducted?

Immediately after the fire and at regular intervals thereafter (Correct answer)
Only if problems arise
During the next planned burn
1 year after the burn

Correct answer: Immediately after the fire and at regular intervals thereafter

The first post-fire evaluation should be conducted immediately after the fire is declared out, often within days or weeks, to assess initial burn effects and ensure containment. Subsequent evaluations at regular intervals (e.g., months, years) are necessary to monitor long-term ecological responses, vegetation recovery, and the overall success of the burn objectives.

Question 7: Using the adult Rule of Nines, what percentage of total body surface area is one entire arm?

9% (Correct answer)
1%
18%
4.5%

Correct answer: 9%

Each adult arm counts as 9% of total body surface area under the Rule of Nines.

Question 8: What does ERC stand for in fire weather forecasting?

Extreme Risk Category
Expected Rate of Combustion
Environmental Risk Calculator
Energy Release Component (Correct answer)

Correct answer: Energy Release Component

Energy Release Component (ERC) is a fire weather index that estimates available energy in the upper fuel layer, reflecting cumulative drying and fire intensity potential.

Question 9: When igniting on slopes, where is backing fire typically started to establish a secure black line?

At random points across the slope
At the bottom of the slope
At the top of the slope along the control line (Correct answer)
At mid-slope

Correct answer: At the top of the slope along the control line

Igniting from the ridgetop control line lets fire back downslope at low intensity, building black.

Question 10: Why do monitoring programs set target confidence levels and minimum detectable change when deciding how many plots to install?

To make sure enough plots exist to statistically detect meaningful change (Correct answer)
To reduce the number of plots to one
Because each plot must burn identically
To avoid recording weather

Correct answer: To make sure enough plots exist to statistically detect meaningful change

Sample size analysis makes sure the monitoring design has enough statistical power to detect real changes.

Question 11: Why is it important to notify neighbors, local fire departments, and dispatch before ignition?

It transfers liability to the fire department
It reduces false alarms, supports safety, and demonstrates reasonable care (Correct answer)
It is only a courtesy with no legal relevance
It replaces the need for a weather forecast

Correct answer: It reduces false alarms, supports safety, and demonstrates reasonable care

Notifications are often legally required and show the burner acted prudently.

Question 12: Duff pins placed before a burn are mainly used to measure what?

Rate of spread
Soil temperature at depth
Flame residence time
Duff and litter depth reduction (consumption) (Correct answer)

Correct answer: Duff and litter depth reduction (consumption)

Measuring from the pin top to the duff surface before and after the burn gives depth consumed.

Question 13: Which law requires federal agencies to consider effects of prescribed burns on historic properties and cultural resources?

Taylor Grazing Act
Antiquities Act of 1906 only
National Historic Preservation Act (Section 106) (Correct answer)
Wilderness Act

Correct answer: National Historic Preservation Act (Section 106)

NHPA Section 106 requires federal undertakings to account for effects on historic properties.

Question 14: In a strict liability jurisdiction, a burner whose fire escapes and damages neighboring property is liable even if what is true?

They lacked a burn permit
They exercised all reasonable care (Correct answer)
They had no contingency plan
They burned outside prescription

Correct answer: They exercised all reasonable care

Strict liability imposes responsibility for damages regardless of fault or care exercised.

Question 15: How often should crew briefings occur during a burn?

Only at the start of the burn
At shift changes and when conditions significantly change (Correct answer)
Once per week
When the Safety Officer feels like it

Correct answer: At shift changes and when conditions significantly change

Crew briefings are crucial for maintaining situational awareness and safety during a prescribed burn. They should occur at the start of each operational period or shift change, and whenever there are significant changes in weather, fire behavior, personnel, or operational objectives, ensuring everyone is updated and understands the current plan and risks.

Question 16: Which fire weather forecast product provides site-specific meteorological data tailored to a single burn unit?

Spot weather forecast (Correct answer)
Red Flag Warning
Marine weather advisory
Standard weather forecast

Correct answer: Spot weather forecast

A spot weather forecast is issued by the National Weather Service for a specific location, time, and elevation to support a planned prescribed burn operation.

Question 17: How long should burn records such as plans, weather logs, and notifications generally be retained?

At least as long as required by state law or agency policy, often several years (Correct answer)
Only until the crew leaves the site
Only until the fire is out
They should be destroyed after the burn to limit liability

Correct answer: At least as long as required by state law or agency policy, often several years

Records support legal defense and compliance audits and must be kept per statute or policy.

Question 18: When communicating with diverse stakeholders, what approach is recommended?

Minimize communication frequency to avoid overload
Adapt communication style and detail level to each stakeholder group (Correct answer)
Provide only positive information
Use the same template for all stakeholders

Correct answer: Adapt communication style and detail level to each stakeholder group

Different stakeholders have different needs, interests, and levels of expertise, requiring adapted communication approaches for each group.

Question 19: Which weather phenomenon poses the greatest risk of causing spotting (fires starting outside the burn unit) during a prescribed burn?

Fog
High relative humidity
Stable air mass
Gusty, erratic winds (Correct answer)

Correct answer: Gusty, erratic winds

Gusty, erratic winds can carry burning embers unpredictably far beyond control lines, igniting spot fires outside the intended burn area.

Question 20: When conducting strip-head firing, what primarily controls the intensity of the fire as strips burn together?

The number of holding resources on the line
The width of the strips between ignition lines (Correct answer)
The fuel mixture ratio in the drip torch
The time of day the test fire was lit

Correct answer: The width of the strips between ignition lines

Wider strips allow the head fire to build more momentum and intensity, while narrower strips keep intensity lower.

Question 21: What safety precaution is critical during aerial ignition?

Using brightly colored drones
Flying at low altitudes without radios
Igniting during peak wind speeds
Ensuring ground crew communication and escape routes (Correct answer)

Correct answer: Ensuring ground crew communication and escape routes

During aerial ignition, maintaining clear communication between the aircraft and ground crews is paramount, along with established escape routes for all personnel. This ensures that ground crews are aware of ignition patterns, can respond to unexpected fire behavior, and have safe egress in case of emergencies, mitigating risks associated with rapid fire spread.

Question 22: A helitorch dispenses what type of fuel?

Gelled gasoline (Correct answer)
Plastic spheres
Liquid diesel only
Compressed propane

Correct answer: Gelled gasoline

Helitorches drop ignited gelled gasoline, producing intense ignition suitable for heavy fuels and slash.

Question 23: A prescribed fire exceeds holding capability and is declared an escape. Who must be notified promptly?

The local newspaper only
No one until it is contained
The agency administrator and dispatch per the burn plan (Correct answer)
Only the ignition specialist

Correct answer: The agency administrator and dispatch per the burn plan

Escape declarations trigger notifications to dispatch and the agency administrator, and conversion to a wildfire.

Question 24: When filling drip torches or fuel cans, why should containers be placed on the ground rather than in a plastic-lined truck bed?

To dissipate static electricity and reduce ignition risk (Correct answer)
To meet DOT placarding rules
To keep fuel cooler for better mixing
To reduce fuel evaporation into the bed liner

Correct answer: To dissipate static electricity and reduce ignition risk

Grounding the container on the earth helps prevent static discharge that can ignite vapors.

Question 25: Which factor determines the choice between 'head firing' and 'flanking firing'?

Soil moisture content
Wildlife activity in the area
Wind direction and desired fire spread rate (Correct answer)
Time of day

Correct answer: Wind direction and desired fire spread rate

The choice between head firing (burning with the wind) and flanking firing (burning perpendicular to the wind) is primarily determined by wind direction and the desired fire spread rate. Head fires spread rapidly and intensely, while flanking fires offer more control and a slower spread, allowing managers to select the technique best suited for specific fuel types and burn objectives.

Question 26: What wind speed range is generally considered acceptable for conducting prescribed burns?

0–2 mph
5–15 mph (Correct answer)
20–25 mph
30+ mph

Correct answer: 5–15 mph

Wind speeds of 5–15 mph are generally acceptable for prescribed burns as they provide adequate smoke dispersal without causing excessive spotting.

Question 27: What is a temperature inversion in the context of prescribed fire smoke management?

A sudden drop in atmospheric pressure ahead of a cold front
When surface temperatures exceed normal seasonal averages
A layer of warm air above cooler air that traps smoke near the ground (Correct answer)
A rapid increase in wind speed with altitude

Correct answer: A layer of warm air above cooler air that traps smoke near the ground

A temperature inversion traps smoke near the ground because the overlying warm air layer prevents upward mixing, creating hazardous air quality conditions.

Question 28: What is the ecological purpose of creating a 'burn mosaic' across a landscape?

To burn the entire landscape uniformly in one season
To identify areas that are too wet to support fire
To create an aesthetically pleasing pattern visible from the air
To produce patches of varied vegetation age and structure that enhance biodiversity (Correct answer)

Correct answer: To produce patches of varied vegetation age and structure that enhance biodiversity

A burn mosaic creates a patchwork of burned and unburned patches at different successional stages, providing diverse habitats, edge effects, and refugia that support greater biodiversity.

Question 29: What is the most common diesel-to-gasoline ratio range used in drip torches?

1 part diesel to 4 parts gasoline
Pure kerosene
Pure gasoline
2:1 to 4:1 diesel to gasoline (Correct answer)

Correct answer: 2:1 to 4:1 diesel to gasoline

Drip torch fuel is typically mixed at about 2:1 to 4:1 diesel to gasoline, with 3:1 common.

Question 30: Which ICS principle allows the organization to expand or contract based on the size and complexity of the burn?

Accountability
Modular organization (Correct answer)
Unity of command
Integrated communications

Correct answer: Modular organization

Modular organization means only needed functions and positions are activated as the incident grows or shrinks.

Question 31: What does the term 'carry' mean in fire behavior when applied to prescribed fire planning?

The amount of smoke produced per unit of fuel burned
Post-fire soil nutrient retention
The ability of fuels to sustain and transmit fire continuously across an area (Correct answer)
Transporting fire equipment to the burn site

Correct answer: The ability of fuels to sustain and transmit fire continuously across an area

Carry refers to fuel continuity and condition — whether fuels are connected and dry enough to sustain fire spread across the intended burn unit without gaps extinguishing the fire.

Question 32: What is the correct initial care for a small partial-thickness burn on a crewmember's arm?

Cool with clean, cool water and remove rings or watches near the area (Correct answer)
Pop the blisters and apply ointment
Cover with butter or grease to seal the skin
Apply ice directly to the burn

Correct answer: Cool with clean, cool water and remove rings or watches near the area

Cool water stops the burning process and removing jewelry prevents constriction as swelling develops.

Question 33: When the number of Divisions and Groups exceeds span of control in Operations, what organizational level is typically added?

Units
Sections
Branches (Correct answer)
Task Forces

Correct answer: Branches

Branches are established under the Operations Section to restore manageable span of control.

Question 34: Which atmospheric stability condition is most favorable for conducting a prescribed burn safely?

Stable atmosphere with good transport winds (Correct answer)
Neutral atmosphere
Highly unstable atmosphere with strong convection
Strong temperature inversion with calm winds

Correct answer: Stable atmosphere with good transport winds

A stable atmosphere with good transport winds limits extreme fire behavior and spotting while ensuring smoke is carried away from the burn area safely.

Question 35: What time-lag fuel moisture category includes dead woody material from 1 to 3 inches in diameter?

10-hour fuels
1-hour fuels
1000-hour fuels
100-hour fuels (Correct answer)

Correct answer: 100-hour fuels

100-hour fuels are dead woody material ranging from 1 to 3 inches in diameter, taking approximately 100 hours to equilibrate with atmospheric moisture conditions.

Question 36: Chainsaw operators on a prescribed burn must wear which specific PPE in addition to standard fire PPE?

A full fire entrapment suit
Rubber boots
Chainsaw chaps, eye and hearing protection (Correct answer)
A respirator with organic cartridges

Correct answer: Chainsaw chaps, eye and hearing protection

Chaps protect legs from chain contact, and eye and hearing protection guard against debris and noise.

Question 37: Which source provides the site-specific weather forecast requested for the day of a prescribed burn?

A spot weather forecast from the National Weather Service (Correct answer)
A national TV broadcast
The ICS-205
The burn plan template

Correct answer: A spot weather forecast from the National Weather Service

Spot weather forecasts from the NWS provide site-specific predictions for prescribed fires and incidents.

Question 38: What are 'ladder fuels' and why are they significant in prescribed fire planning?

Fuels that burn slowly to provide steady heat for ignition crews
Vegetation that provides vertical fuel continuity between ground level and the forest canopy (Correct answer)
Fuels arranged in rows to direct fire spread
Fuel loads measured in layers for modeling purposes

Correct answer: Vegetation that provides vertical fuel continuity between ground level and the forest canopy

Ladder fuels are shrubs, small trees, and lower branches that create a vertical bridge allowing surface fire to climb into the forest canopy and trigger crown fire.

Question 39: Ignition was planned to proceed into the wind, but the wind has shifted 90 degrees. What is the best immediate action for the Firing Boss?

Speed up ignition to finish before conditions worsen
Pause ignition and reassess the firing pattern with the burn boss (Correct answer)
Continue ignition at the same pace
Switch to aerial ignition

Correct answer: Pause ignition and reassess the firing pattern with the burn boss

Wind shifts can convert backing or flanking fire into head fire, so ignition should pause for reassessment.

Question 40: When should a prescribed burn be immediately halted?

When a team member requests a lunch break
When the fire exceeds 50 acres
If escape routes are compromised or weather conditions exceed plan limits (Correct answer)
Only after completing the planned ignition

Correct answer: If escape routes are compromised or weather conditions exceed plan limits

A prescribed burn must be immediately halted if critical safety parameters are violated, such as compromised escape routes for personnel or if weather conditions (e.g., wind speed, humidity) exceed the limits specified in the burn plan. These conditions indicate an unacceptable increase in risk, making it imperative to stop operations to ensure crew safety and prevent the fire from becoming uncontrolled.

Question 41: A holding crew needs to send a written request for more drip torch fuel to logistics; which ICS form is designed for this general communication?

ICS 201
ICS 205
ICS 209
ICS 213 (Correct answer)

Correct answer: ICS 213

The ICS 213 General Message form is used for written messages not covered by other forms.

Question 42: During a prescribed burn, the test fire shows fire behavior well above what the prescription predicts. What is the burn boss's most appropriate action?

Extinguish the test fire and postpone ignition (Correct answer)
Wait one hour and ignite the full unit
Continue ignition but switch to backing fire only
Add more holding crew and proceed as planned

Correct answer: Extinguish the test fire and postpone ignition

If the test fire shows behavior outside the prescription, the burn boss should suppress it and not proceed with ignition.

Question 43: Chevron (V-pattern) ignition is typically used in what terrain situation?

Flat, uniform grassland
Ridge points or nose of a ridge (Correct answer)
Inside drainage bottoms only
Along straight roads in timber

Correct answer: Ridge points or nose of a ridge

Chevron burning is used on ridge points by igniting lines from the apex downslope on both sides.

Question 44: An igniter notices a spot fire across the control line. What should be done first?

Wait to see if the spot goes out
Continue igniting to finish the strip
Ignite a backfire from the spot toward the unit
Notify the Firing Boss and holding immediately so ignition can be held (Correct answer)

Correct answer: Notify the Firing Boss and holding immediately so ignition can be held

Prompt notification lets holding respond and the Firing Boss suspend ignition if needed.

Question 45: Plastic sphere dispensers (PSDs) used in aerial ignition rely on what chemical reaction?

Magnesium and oxygen
Sodium and water
Ammonium nitrate and diesel
Potassium permanganate and ethylene glycol (Correct answer)

Correct answer: Potassium permanganate and ethylene glycol

PSD spheres contain potassium permanganate injected with ethylene glycol, producing a delayed exothermic ignition.

Question 46: What is a 'smoke-sensitive receptor' in prescribed fire planning?

A fire manager who has documented respiratory health conditions
A weather station certified to measure air quality parameters
A population group or location that may be adversely affected by smoke exposure (Correct answer)
An electronic sensor used to monitor airborne particulate levels

Correct answer: A population group or location that may be adversely affected by smoke exposure

Smoke-sensitive receptors are populations or locations — such as hospitals, schools, highways, and communities — that are vulnerable to smoke impacts and must be identified during burn planning.

Question 47: What does the Haines Index measure in relation to prescribed fire?

Fuel moisture content
Wind direction variability
Potential for large fire growth (Correct answer)
Smoke dispersal capacity

Correct answer: Potential for large fire growth

The Haines Index combines lower atmospheric stability and moisture levels to indicate the potential for large, erratic fire development.

Question 48: Ring firing is most useful for which objective?

Burning only the perimeter for fireline construction
Minimizing smoke column development
Creating a strong central convection column that draws fire inward (Correct answer)
Slowly backing fire across the entire unit

Correct answer: Creating a strong central convection column that draws fire inward

Ring firing ignites the perimeter so fire draws toward the center, often used for slash or debris piles and units requiring strong indrafts.

Question 49: What is 'slash' in prescribed fire and fuels management contexts?

Woody debris including branches, tops, and other material left after logging or mechanical treatment (Correct answer)
A linear control line cut through fuels
A critical fire weather condition warning
A rapid mass ignition technique

Correct answer: Woody debris including branches, tops, and other material left after logging or mechanical treatment

Slash refers to the residual woody debris created by logging or mechanical vegetation treatments, which can create heavy, concentrated fuel loads requiring management.

Question 50: Which fuel type has the greatest influence on the rate of spread during a prescribed fire?

100-hour fuels (large branches)
1000-hour fuels (large logs)
1-hour fuels (grasses, leaves, pine needles) (Correct answer)
10-hour fuels (small branches)

Correct answer: 1-hour fuels (grasses, leaves, pine needles)

1-hour fuels such as grasses and pine needles dry rapidly and carry fire most quickly, making them the primary driver of rate of spread in prescribed burns.

Question 51: When should the burn boss declare a prescribed fire a wildfire?

When smoke drifts across a property line
Whenever a single spot fire occurs
When it exceeds prescription and contingency actions cannot return it to prescription in the time specified (Correct answer)
When the burn exceeds the planned duration by one hour

Correct answer: When it exceeds prescription and contingency actions cannot return it to prescription in the time specified

A prescribed fire becomes a wildfire when it cannot be brought back within prescription by on-site contingency actions in the time defined by the plan.

Question 52: What does the acronym LCES stand for in wildland fire safety?

Lookouts, Containment, Engines, Supervision
Lookouts, Communications, Escape Routes, Safety Zones (Correct answer)
Line, Control, Escape, Shelter
Leadership, Command, Evacuation, Suppression

Correct answer: Lookouts, Communications, Escape Routes, Safety Zones

LCES stands for Lookouts, Communications, Escape Routes, and Safety Zones and must be set up before work begins.

Question 53: What term describes the depth of the atmospheric layer where vertical mixing occurs, directly affecting smoke dispersal?

Smoke transport altitude
Mixing height (Correct answer)
Convective ceiling
Thermal boundary

Correct answer: Mixing height

Mixing height is the vertical extent of the layer in which atmospheric mixing occurs, determining how high smoke will rise and disperse.

Question 54: Which common field method is used to estimate dead fuel moisture content during prescribed burn preparation?

Barometric pressure changes over 24-hour periods
Anemometer wind speed readings converted to moisture estimates
Infrared thermometer readings on fuel surfaces
Fuel moisture sticks (standardized wooden dowels weighed in the field) (Correct answer)

Correct answer: Fuel moisture sticks (standardized wooden dowels weighed in the field)

Fuel moisture sticks are standardized wooden dowels that are weighed before and after field exposure; their weight change relative to oven-dry weight approximates the moisture content of similarly sized dead fuels.

Question 55: What is the recommended approach to staying current in First Aid & Basic Life Support?

Regular professional development, industry publications, and peer collaboration (Correct answer)
Reviewing initial training materials once per year
Relying solely on past experience
Waiting for regulatory changes to force updates

Correct answer: Regular professional development, industry publications, and peer collaboration

Staying current in First Aid & Basic Life Support requires ongoing professional development, reading industry publications, and collaborating with peers to share knowledge and best practices.

Question 56: What is a key hazard of center firing combined with ring ignition?

Smoke stays low and is easily managed
High-intensity convection can loft firebrands and cause spotting (Correct answer)
Fire spreads too slowly to consume fuel
Backing fire cannot develop

Correct answer: High-intensity convection can loft firebrands and cause spotting

Strong central convection can produce intense columns and long-range spotting.

Question 57: What is the main safety concern with standing dead trees (snags) inside or near a burn unit?

They increase relative humidity near the ground
They can burn through and fall unexpectedly onto personnel (Correct answer)
They prevent the fire from carrying through the unit
They block radio signals

Correct answer: They can burn through and fall unexpectedly onto personnel

Burning snags can weaken and fall without warning, making them a leading cause of injuries and fatalities on fires.

Question 58: A firefighter has a deep thigh wound bleeding heavily and a tourniquet is not available. What should be done?

Apply a loose bandage and check it every 10 minutes
Pack the wound with gauze and apply firm direct pressure (Correct answer)
Elevate the leg and wait for it to clot
Apply ice to slow bleeding

Correct answer: Pack the wound with gauze and apply firm direct pressure

Wound packing with firm, continuous direct pressure is an effective method for controlling severe bleeding.

Question 59: What is the primary purpose of post-fire monitoring?

To evaluate burn effectiveness and identify needed adjustments (Correct answer)
To determine firefighter overtime pay
To count remaining trees
To document weather conditions after the fire

Correct answer: To evaluate burn effectiveness and identify needed adjustments

Post-fire monitoring is essential for assessing whether the prescribed burn achieved its ecological and management objectives. It involves evaluating factors like fuel consumption, vegetation response, and fire effects, providing valuable data to determine the burn's effectiveness and inform future burn plans or adaptive management strategies.

Question 60: A helitorch dispenses which type of fuel?

Gelled (thickened) gasoline (Correct answer)
Pressurized propane
Class A foam
Pure diesel

Correct answer: Gelled (thickened) gasoline

Helitorches drop burning gelled gasoline mixed with a thickening agent so it falls as globs.

Question 61: What is the recommended span of control for a supervisor in ICS?

One supervisor to 10-15 subordinates, ideally 12
One supervisor to 3-7 subordinates, ideally 5 (Correct answer)
One supervisor to 2-4 subordinates, ideally 3
One supervisor to 8-12 subordinates, ideally 10

Correct answer: One supervisor to 3-7 subordinates, ideally 5

ICS guidance sets span of control at 3 to 7 subordinates, with 5 considered optimal.

Question 62: What is the main benefit of reducing ladder fuels through prescribed burning?

Increasing soil compaction for watershed protection
Eliminating all ground cover to reduce herbivore grazing
Preventing surface fires from transitioning to destructive crown fires (Correct answer)
Increasing timber production by reducing competition

Correct answer: Preventing surface fires from transitioning to destructive crown fires

Reducing ladder fuels breaks the vertical continuity that allows low-intensity surface fires to escalate into high-intensity crown fires that are far more destructive and difficult to control.

Question 63: Flanking fire is ignited in which orientation relative to the wind?

In concentric rings around the unit center
Directly downwind of the black line
Perpendicular to the wind, moving into it
Parallel to the wind direction (Correct answer)

Correct answer: Parallel to the wind direction

Flanking fire lines are lit parallel to the wind so the fire spreads laterally at intermediate intensity.

Question 64: What is the 'fuel moisture of extinction' in fire behavior modeling?

The moisture level measured at the moment a fire is extinguished
The moisture level at which fuels will no longer sustain combustion (Correct answer)
The moisture level at which fires become most dangerous
The amount of water needed per acre to extinguish a fire

Correct answer: The moisture level at which fuels will no longer sustain combustion

Fuel moisture of extinction is the threshold moisture content above which a fuel cannot sustain combustion regardless of heat input, used in fire behavior models to determine burnability.

Question 65: What is the main purpose of the pre-burn briefing?

To obtain the air quality permit
To complete the post-burn report
To sign the complexity analysis
To ensure all personnel understand objectives, assignments, hazards, communications, and contingency actions (Correct answer)

Correct answer: To ensure all personnel understand objectives, assignments, hazards, communications, and contingency actions

The briefing ensures everyone knows the plan, their role, hazards, escape routes, and communications before ignition.

Question 66: Smoke from burning poison oak or poison ivy is hazardous mainly because it carries which substance into the lungs?

Urushiol (Correct answer)
Sulfuric acid
Carbon dioxide
Ozone

Correct answer: Urushiol

Urushiol oil can be carried on smoke particles and cause severe respiratory and skin reactions.

Question 67: Before an aerial ignition operation, which is required?

Only a fuel check of the aircraft
Verbal approval from any crew member
A briefing that covers ignition pattern, communications, and emergency procedures with the aircraft and ground personnel (Correct answer)
Notification after ignition is completed

Correct answer: A briefing that covers ignition pattern, communications, and emergency procedures with the aircraft and ground personnel

Aerial ignition requires coordinated briefings so the aircraft and ground crews share the plan and contingencies.

Question 68: What is the Ventilation Index (VI) used to estimate in smoke management?

Relative humidity of the smoke column at canopy height
Oxygen levels at the fire perimeter during active burning
The atmosphere's capacity to dilute and transport smoke away from a burn (Correct answer)
The rate at which smoke particles deposit on the ground

Correct answer: The atmosphere's capacity to dilute and transport smoke away from a burn

The Ventilation Index combines mixing height and transport wind speed to estimate the atmosphere's capacity to disperse smoke away from a burn area.

Question 69: A prescribed fire exceeds prescription and cannot be contained by contingency actions. What must happen next?

Keep treating it as a prescribed fire
Declare it a wildfire and follow the wildfire declaration and review process (Correct answer)
Lower the objectives and continue
Wait until the next operational period to decide

Correct answer: Declare it a wildfire and follow the wildfire declaration and review process

PMS 484 requires a wildfire declaration and a subsequent review when contingency actions cannot bring the fire back into prescription.

Question 70: How does a Fire Weather Watch differ from a Red Flag Warning?

A watch applies only to nighttime hours
A watch is issued only for forested regions
A watch is less urgent — critical conditions possible in 24–72 hours (Correct answer)
A watch is more urgent than a warning

Correct answer: A watch is less urgent — critical conditions possible in 24–72 hours

A Fire Weather Watch means critical fire weather conditions are possible within 24–72 hours, while a Red Flag Warning means those conditions are imminent or already occurring.

Question 71: Which tool is used to rate a prescribed burn's complexity as low, moderate, or high to determine burn boss qualifications?

The Prescribed Fire Complexity Rating System Guide (PMS 424) (Correct answer)
The Incident Response Pocket Guide
The Haines Index
The National Fire Danger Rating System

Correct answer: The Prescribed Fire Complexity Rating System Guide (PMS 424)

The Prescribed Fire Complexity Rating System Guide evaluates risk, potential consequences, and technical difficulty to rate complexity.

Question 72: When fuel moisture varies across a unit, how should the firing pattern typically be adjusted?

Narrow strips in drier fuels and widen them in moister fuels (Correct answer)
Stop ignition until fuels are uniform
Widen strips in drier fuels and narrow them in moister fuels
Use the same strip width everywhere

Correct answer: Narrow strips in drier fuels and widen them in moister fuels

Drier fuels burn more intensely, so narrower strips control intensity, while moister fuels need wider strips to carry fire.

Question 73: What relative humidity level is typically considered the minimum threshold for safe prescribed burning?

15%
50%
25–30% (Correct answer)
10%

Correct answer: 25–30%

Relative humidity below 25–30% significantly increases fire behavior unpredictability and the risk of losing control of a prescribed burn.

Question 74: What is the first step in managing a crew member experiencing heat stress?

Ignore mild symptoms
Continue working until the burn is complete
Take a group photo for documentation
Move the person to shade, provide water, and monitor symptoms (Correct answer)

Correct answer: Move the person to shade, provide water, and monitor symptoms

When a crew member shows signs of heat stress, the immediate priority is to cool them down and prevent their condition from worsening. Moving them to a cooler, shaded area and providing hydration are crucial first aid steps. Continuously monitoring their symptoms allows for assessment of improvement or the need for further medical intervention, ensuring their safety and well-being.

Question 75: A water drop placed on mineral soil after a burn beads up for more than 40 seconds. What does this suggest?

High soil organic matter with good infiltration
Soil heating was low
The soil is frozen
Possible fire-induced water repellency (hydrophobicity) (Correct answer)

Correct answer: Possible fire-induced water repellency (hydrophobicity)

A long water drop penetration time indicates water-repellent soils, which raise runoff and erosion risk.

Question 76: A crew member notices hose threads are damaged on a coupling before the burn. What is appropriate?

Remove the hose from service and tag it for repair (Correct answer)
Use it but avoid high pressure
Wrap it in duct tape and deploy
Swap it to the pump discharge where pressure is lower

Correct answer: Remove the hose from service and tag it for repair

Damaged couplings may fail under pressure, so the hose should be taken out of service before the burn.

Question 77: In ponderosa pine, which post-fire measurement best predicts whether a tree will die from first-order fire effects?

Percent crown volume scorched (Correct answer)
Litter depth at the drip line
Bole char height on the windward side
Flame length during the head fire

Correct answer: Percent crown volume scorched

Crown volume scorched is the main predictor in most conifer mortality models.

Question 78: Which wind component most directly determines fire spread direction during a prescribed burn?

Geostrophic winds
Surface winds (Correct answer)
Jet stream winds
Upper-level winds

Correct answer: Surface winds

Surface winds are in direct contact with surface fuels and flames, making them the primary factor controlling fire spread direction and rate.

Question 79: Why is establishing control lines essential before ignition?

To contain the fire within predetermined limits. (Correct answer)
To mark the area for photographers.
To reduce smoke production.
To provide boundaries for the fire to spread freely.

Correct answer: To contain the fire within predetermined limits.

Establishing control lines, such as firebreaks or wet lines, before ignition is absolutely essential to safely conduct a prescribed burn. These lines act as physical barriers that prevent the fire from spreading beyond the intended burn unit, ensuring the fire remains contained and achieving the desired ecological objectives without unintended consequences.

Question 80: What is 'fuel loading' as used in prescribed fire management?

The process of adding fuel to an active fire
The moisture content of fuels before ignition
The height of standing fuel above the ground
The dry weight of combustible organic material per unit area (Correct answer)

Correct answer: The dry weight of combustible organic material per unit area

Fuel loading is the dry weight of all combustible organic material per unit area (typically tons per acre), used to predict fire intensity and plan treatments.

Question 81: Which vegetation management challenge is prescribed fire commonly used to address in US rangelands?

Eliminating all forb species to maximize grass yields
Controlling encroachment of woody shrubs and trees into grasslands (Correct answer)
Reducing native grass species diversity to favor livestock forage
Increasing bare ground percentage for livestock access

Correct answer: Controlling encroachment of woody shrubs and trees into grasslands

Prescribed fire is a primary tool in US rangelands for controlling brush encroachment — the invasion of woody shrubs and trees into grasslands — restoring productivity and native grass diversity.

Question 82: Why are delayed tree mortality assessments usually repeated 1 to 3 years after a burn?

Trees always resprout in year one
Regulations ban measurements in year one
Bark beetle attacks and root or cambium damage can kill trees after the first season (Correct answer)
Crown scorch is invisible until year three

Correct answer: Bark beetle attacks and root or cambium damage can kill trees after the first season

Many fire-injured trees die later from cambial or root damage and secondary insect attack.

Question 83: Which tool is typically used for precise spot ignition?

Water hose
Bulldozer
Drip torch (Correct answer)
Chainsaw

Correct answer: Drip torch

A drip torch is a specialized tool commonly used for precise spot ignition in prescribed burning. It allows operators to control the placement and amount of ignited fuel, making it ideal for creating individual ignition points or for more controlled firing patterns in specific areas.

Question 84: Dot or spot ignition in a heavily stocked stand is often chosen to:

Maximize overstory mortality
Create a single large head fire
Avoid the need for holding
Keep fire intensity low and reduce crown scorch under a canopy (Correct answer)

Correct answer: Keep fire intensity low and reduce crown scorch under a canopy

Properly spaced spots produce low-intensity fire that limits scorch to overstory trees.

Question 85: Fine dead fuel moisture below approximately what percentage significantly increases the risk of extreme fire behavior?

10–15%
20–25%
5–8% (Correct answer)
15–20%

Correct answer: 5–8%

Fine dead fuel moisture below about 8% dramatically increases fire intensity and rate of spread, often warranting postponement of prescribed burns.

Question 86: Which practice best supports early detection of heat illness on a burn crew?

Waiting for crewmembers to report their own symptoms
Relying on the burn boss to watch all personnel
Using the buddy system to watch each other for behavior changes (Correct answer)
Checking temperatures only at the end of the shift

Correct answer: Using the buddy system to watch each other for behavior changes

Heat-affected people often do not notice their own decline, so peers watching each other catch problems sooner.

Question 87: Under the current federal standard, what is the 24-hour PM2.5 National Ambient Air Quality Standard (NAAQS)?

50 µg/m³
35 µg/m³ (Correct answer)
150 µg/m³
12 µg/m³

Correct answer: 35 µg/m³

The 24-hour PM2.5 NAAQS is 35 µg/m³; 150 µg/m³ is the 24-hour PM10 standard.

Question 88: What common challenge do professionals face when applying Equipment Operation & Maintenance principles?

Balancing theoretical best practices with practical constraints and real-world conditions (Correct answer)
Finding the relevant textbook chapter
The principles are too simple to present any challenge
Obtaining permission to use the principles

Correct answer: Balancing theoretical best practices with practical constraints and real-world conditions

Professionals commonly face the challenge of adapting theoretical best practices in Equipment Operation & Maintenance to the practical constraints and varying conditions encountered in real-world settings.

Question 89: The Prescribed Fire Complexity Rating System Guide (PMS 424) evaluates how many complexity elements?

21
18
14 (Correct answer)
10

Correct answer: 14

PMS 424 rates 14 elements, such as fuels, fire behavior, and smoke management, to determine overall complexity.

Question 90: What is 'crown fire potential' in a forested stand, and what factor most drives it?

The likelihood that fire transitions from surface fuels into the forest canopy, driven primarily by ladder fuels (Correct answer)
The probability of a tree producing seeds after fire, driven by species fire adaptation
The tendency of mature trees to resist fire, driven by bark thickness
The rate of smoke production from crown fuels, driven by canopy density

Correct answer: The likelihood that fire transitions from surface fuels into the forest canopy, driven primarily by ladder fuels

Crown fire potential describes the risk of fire transitioning from the surface into the canopy; it is primarily driven by ladder fuel density, canopy base height, and canopy bulk density.

Question 91: Why should igniters maintain communication and avoid getting ahead of holding forces?

To reduce smoke impacts downwind
To ensure holding can secure the line before fire pressure builds (Correct answer)
To allow fire effects monitors to take photos
To minimize drip torch fuel use

Correct answer: To ensure holding can secure the line before fire pressure builds

Ignition outpacing holding increases slopover and escape risk.

Question 92: How can remote sensing (e.g., drones, satellites) aid post-fire monitoring?

Automatically writing evaluation reports
Providing high-resolution imagery of burn patterns and vegetation response (Correct answer)
Replacing all ground crews
By delivering water to hotspots

Correct answer: Providing high-resolution imagery of burn patterns and vegetation response

Remote sensing technologies, such as drones and satellites, offer invaluable tools for post-fire monitoring. They can capture high-resolution imagery that allows fire managers to accurately map burn severity, assess the completeness of fuel consumption, and track the subsequent recovery and regrowth of vegetation over large areas. This data is crucial for evaluating burn effectiveness and informing future land management decisions.

Question 93: What does a CTCSS tone (tone guard) on a radio channel do?

Opens the receiver squelch only when the matching sub-audible tone is present (Correct answer)
Allows the radio to scan multiple channels
Boosts transmit power
Encrypts the transmission

Correct answer: Opens the receiver squelch only when the matching sub-audible tone is present

CTCSS tones filter unwanted traffic so only transmissions with the matching tone break squelch.

Question 94: Which of the following is NOT a Command Staff position in ICS?

Public Information Officer
Liaison Officer
Finance/Administration Section Chief (Correct answer)
Safety Officer

Correct answer: Finance/Administration Section Chief

Section Chiefs belong to the General Staff, while Safety, Liaison, and PIO make up the Command Staff.

Question 95: While observing ignition, the Safety Officer sees a crew member about to enter an unburned pocket with active fire overhead; what authority does the Safety Officer have?

Only to report it to the Burn Boss after the operational period
To immediately stop or prevent the unsafe act (Correct answer)
To reassign the crew member to another division
To suspend the entire burn plan permanently

Correct answer: To immediately stop or prevent the unsafe act

The Safety Officer may exercise emergency authority to stop or prevent unsafe acts immediately.

Question 96: During clear, sunny conditions, at what time of day is atmospheric instability typically greatest?

Late morning (9–11 AM)
Evening (6–8 PM)
Early morning (6–8 AM)
Early afternoon (1–3 PM) (Correct answer)

Correct answer: Early afternoon (1–3 PM)

Solar heating peaks in the early afternoon, creating maximum surface temperatures and strongest convective mixing, which produces the greatest atmospheric instability.

Question 97: Which factor is MOST critical when selecting a burn unit?

Proximity to water sources.
Fuel load and continuity. (Correct answer)
Presence of recreational trails.
Historical significance of the area.

Correct answer: Fuel load and continuity.

Fuel load and continuity are the most critical factors when selecting a burn unit because they directly influence fire behavior, intensity, and spread. Understanding the type, amount, and distribution of fuels allows prescribed fire managers to predict how the fire will burn and ensure it can be safely controlled to meet objectives.

Question 98: Which ignition technique is most dependent on a steady, consistent wind direction to remain safe and effective?

Ring firing in calm conditions
Flanking fire (Correct answer)
Spot (grid) ignition
Backing fire

Correct answer: Flanking fire

Flanking fire requires a consistent wind direction because a wind shift can turn flanks into head fires.

Question 99: What is the recommended approach to staying current in Incident Command System?

Regular professional development, industry publications, and peer collaboration (Correct answer)
Reviewing initial training materials once per year
Waiting for regulatory changes to force updates
Relying solely on past experience

Correct answer: Regular professional development, industry publications, and peer collaboration

Staying current in Incident Command System requires ongoing professional development, reading industry publications, and collaborating with peers to share knowledge and best practices.

Question 100: Why is backing fire often used along the downwind control line before interior ignition?

To produce maximum crown scorch
To increase smoke column height
To create a widened black line that can stop later head fires (Correct answer)
To save time compared to other methods

Correct answer: To create a widened black line that can stop later head fires

Backing fire builds depth of black along the downwind edge, securing the unit for interior ignition.

Certified Prescribed Fire Manager (CPFM) Exam

The CPFM certification validates an individual's knowledge and skills required to safely and effectively plan, prepare, and execute prescribed burns for land management.

100

Questions

120 min

Time Limit

70%

To Pass

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These practice questions were written with AI tools. They are not real exam questions. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

code.wvlegislature.gov — Test delivery, fees, eligibility · verified Nov 2026
scfc.gov — Exam dates, test delivery, fees, registration deadline · verified Nov 2026