When heat travels from one solid to another, it is known as ______.

• Convection

• Radiation

• Conduction

• Vaporization

The type of heat transfer where heat is transferred from one solid to another is called:

• convection

• conduction

• radiation

• thermodynamics

Much of the heat produced during combustion is not used productively and must be removed to avoid overheating of the engine.

• True

• False

Technician A states that much of the heat produced during combustion is not used productively and must be removed to avoid overheating of the engine. Technician B states that the internal combustion engine relies on the heat of combustion to produce torque. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

The automotive cooling system provides a means of transferring heat from the hot parts of the engine to ambient air.

• True

• False

Manufacturers use various cooling system configurations, but the basic concept is to _______.

• transfer excessive heat from hotter to cooler environments

• modify the volume of coolant to allow heat transfer

• transfer excessive heat from cooler to hotter environments

• modify the contents of a coolant to allow heat transfer

The coolant heat storage system:

• uses a condenser

• prevents the engine from overheating on hot days

• increases hydrocarbon exhaust emissions

• preheats the engine when the vehicle is started the next time

______ have fallen out of favor in passenger vehicles because they are harder to maintain at a stable temperature, thereby increasing emissions output of the engine.

• Air-cooled engines

• Liquid-cooled engines

• Fuel-cooled engines

• None of the above

Many types of metals are used in the engine, such as _____, copper, and brass.

• Cast iron

• Aluminum

• Both A and B

• Neither A nor B

__________ is a type of nontoxic antifreeze.

• Ethylene glycol

• Polyalkylene glycol

• Polyalphaolefin glycol

• Propylene glycol