Using Energy Assessment

A fan is plugged into an extension cord. How does the extension cord help the fan work?

• The extension cord makes the fan more powerful.

• The extension cord makes the fan easier to operate.

• The extension cord transfers electric currents from the outlet to the fan.

• The extension cord transfers sound energy to the fan

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A flow of electrical charges is known as _____.

• resistance

• static electricity

• voltage

• electrical current

A switch in a circuit _____.

• acts as an insulator

• allows or stops the flow of electricity

• absorbs electricity

• keeps the flow of electricity at a safe level

An object in an electrical circuit that resists the flow of energy is called _____.

• a magnet

• a compass

• a voltage

• a resistor

What is a type of system worked with by thermal engineers?

• Carnot

• Atwood

• inclined planes

• wedges

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The movement of thermal energy from a warmer object to a cooler one.

• Temperature

• Heat

• Insulation

• Kelvin

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How does heat transfer occur?

• From cold to hot.

• From both hot to cold and cold to hot.

• From hot to cold.

• In any direction.

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As the thermal energy of matter increases (or temp. increases) its particles usually spread out

• Temperature

• Heat

• Thermal Expansion

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A measure of the average kinetic energy of the individual particles in an object.

• Temperature

• Heat

• Specific Heat

• Thermal Expansion

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NGSS.MS-PS3-4

The transfer of energy by through space. (No molecules needed.)

• Conduction

• Convection

• Radiation

• Participation

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