Intro Thermodynamics Practice

Temperature is a measure of the...

• total energy in a substance
• total kinetic energy in a substance
• average potential energy in a substance
• average kinetic energy of molecules in a substance

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

The transfer of thermal energy between objects of different temperatures is called...

• temperature
• heat
• internal energy
• none of these

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NGSS.HS-PS3-4

Heat transfer by conduction occurs when...

• particles bump into each other
• large numbers of atoms move from place to place
• atoms give off heat in the form of electromagnetic waves
• electromagnetic waves travel from place to place through a vacuum

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NGSS.HS-PS3-4

Heat transfer by convection occurs when...

• electrons bump into other electrons
• large numbers of atoms move from place to place
• atoms give off heat in the form of electromagnetic waves
• electromagnetic waves travel from place to place through a vacuum

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NGSS.HS-PS3-4

NGSS.HS-ESS2-3

A substance with a high specific heat:

• Is always extremely hot.
• Requires a lot of energy to become hot.
• Is not heavy.
• Does not requires a lot of energy to become hot.

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NGSS.HS-PS3-4

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Thermal energy always moves:

• From a high temperature object to a lower temperature object.
• From a lower temperature object to a higher temperature object.
• From an object with lower kinetic energy to an object with higher kinetic energy.
• From an object of higher mass to an object of lower mass.

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NGSS.HS-PS3-4

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The first law of thermodynamics states that energy is

• created
• destroyed
• conserved
• created and destroyed

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NGSS.HS-PS3-2

Do molecules generally move faster at 45 C or 106 C?

• 45 C because molecules have more energy than in 106C

• 106 C because molecules have more energy than in 45C

• 106 C because molecules have less energy than in 45C

• 45C because molecules have less energy than in 106 C

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NGSS.HS-PS1-5

Why can't a heat engine be 100% efficient?

• Heat is always created
• No work can be done
• Entropy is lost
• Thermal energy decreases

Which of the following is true for a closed system?

• mass entering = mass leaving

• mass does not enter or leave the system

• mass entering can be more or less than the mass leaving

• none of the mentioned

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NGSS.HS-PS1-7