On-site Introduction to Prescribed Fire

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Complete this quiz during John Weir's discussion at FERST. You may work in groups of up to 3 (be sure to include all group members' names). Most questions could also be answered using the following OSU-NREM factsheets: http://factsheets.okstate.edu/documents/nrem-2899-prescribed-burn-equipment/ and http://factsheets.okstate.edu/wp-content/uploads/2017/04/E-927websurvey.pdf

Last Name, First Name

Last Name, First Name (if working as a group)

Class Period

Why conduct prescribed fires? (Choose the best answer.)

3 points

Fuel reduction (lower the impacts of wildfire)

Reduce/control invasive plant species

Provide better forage and habitat for livestock and wildlife

Fire provides a variety of benefits. Land management objectives must be clearly identified. Then, fire can be prescribed if this natural disturbance will meet specified objectives.

Clear selection

To safely conduct a prescribed burn, clothing (long-sleeved shirts and pants) used as PPE (Personal Protective Equipment) should be made of what material(s)? (Choose the best answer.)

3 points

Synthetic materials (e.g. polyester, spandex)

Fire resistant (FR) or non-flammable materials (e.g. 100% cotton, Nomex)

The material is not important as long as the garments do not have rips, tears, or holes.

Clothing that is worn is not a safety concern when working around fire.

Clear selection

What additional PPE should be worn when working as part of a prescribed burn crew? (Choose the best answer.)

3 points

Leather gloves

"Tall" leather boots with a "Vibram-type" sole or at least hiking boots

Eye protection

Headgear such as a helmet or at least some type of non-flammable hat or cap

All of the above

Clear selection

Of the following types of fire suppression equipment, which were on-site for today's prescribed burn? (Check all that apply.)

0 points

Pumper Unit/Truck

UTV (Utility Type Vehicle) or ATV (All Terrain Vehicle) with a spray unit

Leaf Blower

Backpack Pump

Fire Rake

Fire Swatter

Which weather variable(s) is most important to consider when planning a prescribed burn? (Choose the best answer.)

3 points

Wind Speed

Wind Direction

Temperature

Relative Humidity

All of the above

Clear selection

Why is a digital hand-held weather device important to have on-site before and during a prescribed burn? (Choose the best answer.)

3 points

Hand-held weather devices are not necessary; the weather forecast can be checked the day before a prescribed burn is conducted.

Hand-held weather devices are a possible source of distraction during a prescribed burn, so they should not be available on-site.

To safely conduct a prescribed burn and to insure that weather conditions are "within prescription," on-site weather conditions must be known and monitored, as weather forecasts projected from only a few miles away can be different from actual conditions on the site.

Clear selection

What is the relationship between temperature and relative humidity [RH]? (Choose the best answer.)

3 points

Direct relationship - as temperature increases, RH also increases

Inverse relationship - as temperature increases, RH decreases

There is no relationship between temperature and RH

Clear selection

Since the amount of moisture in dried grass (i.e. dead fuel moisture) is directly related to relative humidity [RH] and can change within one hour, how does RH affect fire behavior? (Choose the best answer.)

3 points

The higher the RH is, the more easily fuels (e.g. grass, forbs, woody plants) will burn.

The lower the RH is, the more easily fuels (e.g. grass, forbs, woody plants) will burn.

RH does not have an impact on fire behavior or combustibility of fuels.

Clear selection

Record the preburn temperature (degrees Fahrenheit) for your class.

Record the preburn RH (%) for your class.

Record the preburn wind speed (mph) for you class.

Record the time your class' fire weather was measured.

To conduct a prescribed burn at FERST, weather conditions must be in the following ranges: 1) Wind speed - less than 10 mph; 2) Relative Humidity - above 30%; and 3) Temperature - 35-100 degrees Fahrenheit. Can we conduct our burn today? Are we within prescription? (Choose the best answer.)

0 points

YES

Clear selection

What is a burn unit? (Choose the best answer.)

3 points

The only area that is supposed to be burned during a prescribed fire.

Another term used to describe a pumper unit/truck which usually has a larger capacity water tank and high pressure spray system.

A unit used by fire professionals to describe the total area burned during a wildfire or prescribed fire (e.g. "The wildfire consumed 640 burn units before it was contained.").

The term used to describe a radiation burn that fire crew members may receive if wearing insufficient PPE.

Clear selection

Which is the correct description of a fire break? (Choose the best answer.)

3 points

Firebreaks are used to contain the fire within the boundary of the burn unit and to assist with reducing fuel along the boundary.

Firebreaks can be used for access by equipment to the burn unit.

Firebreaks typically extend to bare ground or mineral soil, with no continuous fuel, so fire cannot creep across the line and outside the burn unit.

Firebreaks can be created by combining a wet line (water sprayed along the perimeter of the burn unit) with a mowed line.

All of the above

Clear selection

What are the characteristics of a backfire? (Check all that apply.)

3 points

Fire "backs" into the wind.

Fire moves in the direction of the wind.

Flame height is typically higher than a headfire.

Smoke plume is away from unburned fuel.

Smoke plume is towards unburned fuel.

Backfires are often used to begin a prescribed burn.

Backfires move more quickly than headfires.

Backfires are less intense than headfires.

What are the characteristics of a headfire? (Check all that apply.)

3 points

Fire "backs" into the wind.

Fire moves in the direction of the wind.

Flame height is typically higher than a backfire.

Smoke plume is away from unburned fuel.

Smoke plume is towards unburned fuel.

Headfires are often used to begin a prescribed burn.

Headfires move more quickly than backfires.

Headfires are less intense than backfires.

Which of the following is correct about "mopping-up" after a prescribed fire? (Choose the best answer.)

3 points

Mop-up prevents residual fire from igniting outside the firebreak.

Mop-up reduces or eliminates postburn smoke problems.

Mop-up is one of the most crucial phases of prescribed burning and should not be taken lightly.

All of the above

Clear selection

What two fuels are mixed together for use in a drip torch? (Choose the best answer.)

3 points

Ethanol and gasoline

Ethanol and diesel

Diesel and gasoline

Lighter fluid and vinegar

Clear selection

According to the map on the "FERST Fall Fire Festival" worksheet, which demonstration plot did your class burn?

How "complete" was the burn in your group's burn unit? Answer as the percentage area burned of the burn unit's total area. (The number you enter is considered to be a percent; e.g. 75 = 75%.)

0 points

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