CFEI Study Guide Test Questions with Correct Solutions A Graded

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