Thermodynamics and Systems

According to the second law of thermodynamics, natural processes go in the direction that ____ the total entropy of the universe.

• Increases or Decreases

• Increases

• Decreases

• maintains

The total change in the thermal energy of a system is the heat added to it minus the ____ the system.

• entropy of

• work done by

• kinetic energy of

• temperature of

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The form of energy transfer that takes place in a house heated by forced air is primarily ____ .

• Convection

• Conduction

• Radiation

• Induction

If the final temperature of a system is greater than the initial temperature, Δt is __________.

• positive

• eliminated

• negative

• reduced

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__________ is the amount of energy that must be added to a material to raise one unit of mass by one temperature unit.

• Temperature

• Specific Heat

• Radiation

• Hotness

Thermodynamics is the study of __________.

• Heat

• Light

• Stars

• Sound

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In which direction does thermal energy flow?

• From hot to cold

• From cold to hot

• From light to dark

• Either from hot to cold or from cold to hot

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Absolute zero is __________.

• 273.15 K

• 273.15 F

• -273.15 C

• -273.15 K

You have equal masses of four of the substances listed. All are at the same initial temperature. If you place them in a warmer room, which of the substance's temperature will increase most rapidly?

• Iron

• Aluminum

• Lead

• Zinc

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The Sun warms the Earth by __________.

• Convection

• Conduction

• Radiation

• Induction

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