FCTC Fire Behavior and Service Terminology 5

Question 1

Which term refers to the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit?

Accepted Answer

BTU

Answer

A British Thermal Unit (BTU) is defined as the heat needed to raise one pound of water by 1°F and is a standard unit in fire engineering.

Question 2

In the fire tetrahedron model, which element replaced the base of the older fire triangle?

Accepted Answer

Chemical chain reaction

Answer

The fire tetrahedron added the chemical chain reaction as the fourth element to the original fire triangle of heat, fuel, and oxygen.

Question 3

What term describes the transfer of heat through direct contact between molecules of matter?

Accepted Answer

Conduction

Answer

Conduction is heat transfer through direct molecular contact, such as heat traveling through a metal door or structural beam.

Question 4

What is the specific gravity of a flammable liquid that is LESS than 1, indicating it will do what in water?

Accepted Answer

Float on top

Answer

Flammable liquids with a specific gravity less than 1 are lighter than water and will float on the surface, allowing fire to spread over water.

Question 5

Which term describes the concentration range in which a flammable gas will ignite when mixed with air?

Accepted Answer

Flammable (explosive) range

Answer

The flammable or explosive range is bounded by the Lower Explosive Limit (LEL) and Upper Explosive Limit (UEL), defining concentrations that support ignition.

FCTC Test Practice Test

FCTC Test Practice Test

FCTC Fire Behavior and Service Terminology 5