NAFI CFEI VERIFIED QUESTIONS AND
ANSWERS GRADED A+ RATED 100%
The scientific method - Recognize the need, define the problem, collect data,
analyze the data, develop hypothesis, test hypothesis, select final hypothesis
Fire effects are the result of? - Exposure to fire
Fire effects are part of what portion of the scientific method - Data collection
What are the general categories of fire effects? - Discoloration, deformation,
deposition, mass loss
Fire Effect - The observable or measurable changes in or on a material as a result
of a fire
Fire Analysis - The process of determining the origin, cause, development,
responsibility, and when required, failure analysis of a fire or explosion
Fire Dynamics - The detailed study of how chemistry, Fire science, and the
engineering disciplines of fluid mechanics and heat transfer interact to influence fire
behavior
Fire Investigation - The process of determining the origin, cause, and development
of a fire or explosion
Job Performance Requirements - A statement that describes a specific job task, list
the items necessary to to complete the task, and defines measurable or observable
outcomes and evaluation areas for the specific task
What aspects are involved in finding a cause? - Circumstances, conditions, or
agencies that brought the ignition source, fuel, and oxidant together
Empirical Data - Observation or experience and is capable of being verified or
known to be true
Deductive reasoning - The process by which conclusions are drawn by logical
inference from given premises. Comparing hypothesis to collected data
, Inductive Reasoning - Starts from a particular experience and proceeds to
generalizations. Develops hypothesis based on facts, training, expertise, experience,
and knowledge
Expectation Bias - The use of only the data that supports this previously formed
conclusion and often results in the misinterpretation and/or the discarding of data
that does not support the original opinion
Confirmation bias - Confirming data that supports your hypothesis
What are the two levels of certainty for an expert - Probable and possible
What level of certainty does not qualify for an expert opinion - Suspected
Probable - Greater than 50% certainty
Possible - Feasible but not, less than 50% sure. If two hypothesis are likely then
certainty has to be possible
Fire - A rapid oxidation process, which is an exothermic reaction, resulting in the
release of heat and light energy in varying intensities.
Energy - A property of matter that manifests as an ability to perform work, either by
moving over a distance against a force or by transferring heat.
Calorie - The amount of energy required to raise the temperature of 1 g of water by
1 degree Celsius
BTU - The quantity of heat required to raise the temp. Of 1 lb of water by 1 degree
F at a pressure of 1 atmosphere and temp of 60 degrees F
Energy is measured in.... - Calories, BTUs, Joules
Power - Energy released per unit of time
Power is measured in... - Joules per second (J/s) or watts (W)
Heat flux - The amount of power per unit area
Heat flux is measured in.... - kW/m^2 or W/cm^2
Fire tetrahedron - Fuel, the oxidizing agent, the heat, uninhibited chemical chain
reaction
Fuel - Any substance that can undergo combustion
Two common inorganic metals - Magnesium and sodium
Inorganic - Does not contain carbon
ANSWERS GRADED A+ RATED 100%
The scientific method - Recognize the need, define the problem, collect data,
analyze the data, develop hypothesis, test hypothesis, select final hypothesis
Fire effects are the result of? - Exposure to fire
Fire effects are part of what portion of the scientific method - Data collection
What are the general categories of fire effects? - Discoloration, deformation,
deposition, mass loss
Fire Effect - The observable or measurable changes in or on a material as a result
of a fire
Fire Analysis - The process of determining the origin, cause, development,
responsibility, and when required, failure analysis of a fire or explosion
Fire Dynamics - The detailed study of how chemistry, Fire science, and the
engineering disciplines of fluid mechanics and heat transfer interact to influence fire
behavior
Fire Investigation - The process of determining the origin, cause, and development
of a fire or explosion
Job Performance Requirements - A statement that describes a specific job task, list
the items necessary to to complete the task, and defines measurable or observable
outcomes and evaluation areas for the specific task
What aspects are involved in finding a cause? - Circumstances, conditions, or
agencies that brought the ignition source, fuel, and oxidant together
Empirical Data - Observation or experience and is capable of being verified or
known to be true
Deductive reasoning - The process by which conclusions are drawn by logical
inference from given premises. Comparing hypothesis to collected data
, Inductive Reasoning - Starts from a particular experience and proceeds to
generalizations. Develops hypothesis based on facts, training, expertise, experience,
and knowledge
Expectation Bias - The use of only the data that supports this previously formed
conclusion and often results in the misinterpretation and/or the discarding of data
that does not support the original opinion
Confirmation bias - Confirming data that supports your hypothesis
What are the two levels of certainty for an expert - Probable and possible
What level of certainty does not qualify for an expert opinion - Suspected
Probable - Greater than 50% certainty
Possible - Feasible but not, less than 50% sure. If two hypothesis are likely then
certainty has to be possible
Fire - A rapid oxidation process, which is an exothermic reaction, resulting in the
release of heat and light energy in varying intensities.
Energy - A property of matter that manifests as an ability to perform work, either by
moving over a distance against a force or by transferring heat.
Calorie - The amount of energy required to raise the temperature of 1 g of water by
1 degree Celsius
BTU - The quantity of heat required to raise the temp. Of 1 lb of water by 1 degree
F at a pressure of 1 atmosphere and temp of 60 degrees F
Energy is measured in.... - Calories, BTUs, Joules
Power - Energy released per unit of time
Power is measured in... - Joules per second (J/s) or watts (W)
Heat flux - The amount of power per unit area
Heat flux is measured in.... - kW/m^2 or W/cm^2
Fire tetrahedron - Fuel, the oxidizing agent, the heat, uninhibited chemical chain
reaction
Fuel - Any substance that can undergo combustion
Two common inorganic metals - Magnesium and sodium
Inorganic - Does not contain carbon
