S-190 Wildland Firefighting Task Sheet
Identify how many feet are in a chain. - (correct Answer) - One Chain = 66 feet
80 Chains = 1 mile
Name the three sides of the fire triangle. - (correct Answer) - Heat, Oxygen, Fuel (HOF)
Remove one and then there's no fire.
Summarize how each of the three methods of heat transfer (conduction, convection, radiation) supplies
heat to a fuel to start a fire. - (correct Answer) - Conduction: the transfer of heat through direct contact.
Convection: the transfer of heat by the movement of a liquid or gas.
Radiation: the transfer of heat through space (a vacuum).
Explain the reason for establishing an anchor point. - (correct Answer) - Anchor point: An advantageous
location, usually a barrier (obstruction to the spread of fire, typically an area or strip devoid of
combustible fuel. natural: lakes and rivers; constructed: roads) to fire spread, from which to start
constructing a fire line.
The anchor point is used to minimize the chance of being flanked by the fire while the line is being
constructed.
Differentiate the characteristics of the fuels found on a North Aspect from those found on a South
Aspect. - (correct Answer) - North aspects tend to be cooler and have a higher relative humidity (RH).
South aspects tend to be warmer and have lower RH because they are in more direct contact with the
Identify how many feet are in a chain. - (correct Answer) - One Chain = 66 feet
80 Chains = 1 mile
Name the three sides of the fire triangle. - (correct Answer) - Heat, Oxygen, Fuel (HOF)
Remove one and then there's no fire.
Summarize how each of the three methods of heat transfer (conduction, convection, radiation) supplies
heat to a fuel to start a fire. - (correct Answer) - Conduction: the transfer of heat through direct contact.
Convection: the transfer of heat by the movement of a liquid or gas.
Radiation: the transfer of heat through space (a vacuum).
Explain the reason for establishing an anchor point. - (correct Answer) - Anchor point: An advantageous
location, usually a barrier (obstruction to the spread of fire, typically an area or strip devoid of
combustible fuel. natural: lakes and rivers; constructed: roads) to fire spread, from which to start
constructing a fire line.
The anchor point is used to minimize the chance of being flanked by the fire while the line is being
constructed.
Differentiate the characteristics of the fuels found on a North Aspect from those found on a South
Aspect. - (correct Answer) - North aspects tend to be cooler and have a higher relative humidity (RH).
South aspects tend to be warmer and have lower RH because they are in more direct contact with the
