Essentials Chapter 5: Fire Behavior LT 08.01

Which of the following BEST describes how understanding the physical science of fire can help firefighters?

• It keeps radiant heat from igniting fuel.

• It keeps flaming combustion from beginning.

• It translates into practical knowledge of fire behavior.

• It helps in stopping rapid fire behavior from developing.

Which of the following terms refers to a substance remaining chemically the same, but changing in size, shape or appearance?

• Chemical shift

• Physical change

• Chemical reaction

• Parallel alteration

When a substance changes from one type of matter to another, it has had a:

• chemical shift.

• physical change.

• chemical reaction.

• physical alteration.

Which of the following represents the amount of energy that an object can release in the future?

• Kinetic

• Thermal

• Potential

• Mechanical

The energy possessed by a moving object is called:

• kinetic energy.

• thermal energy.

• potential energy.

• mechanical energy.

What type of reaction absorbs energy as it occurs?

• Kinetic

• Potential

• Exothermic

• Endothermic

The process of ignition causes pyrolysis in solid fuels and ___ in liquid fuels.

• melting

• freezing

• vaporization

• kinetic reaction

What type of combustion occurs when burning is localized and produces a smoldering glow near a material’s surface?

• Kinetic

• Flaming

• Potential

• Nonflaming

What are the elements necessary to create fire in the model represented by the fire triangle?

• Fuel, oxygen, heat

• Heat, fuel, ignition

• Passive agents and heat

• Oxygen and passive agents

Which of the following BEST describes what the fire tetrahedron represents?

• A transfer of sound energy

• The process of autoignition

• An uninhibited chemical chain reaction

• The relationship between fuel, oxygen, heat