Thermal Energy Review

What is the thermal energy of an object?

• the total kinetic and potential energies of its particles

• The thermal energy of an object is the potential energy due to its position.
• The thermal energy of an object is the energy it emits as light.
• The thermal energy of an object is the energy stored in its chemical bonds.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Why does an ice cube melt when you hold it in your hand?

• The ice cube absorbs cold from your hand.
• The ice cube is made of a special material that evaporates.
• Heat is transferred from your hand to the ice cube.

• The ice cube melts due to the pressure of your grip.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A driver touches a car’s steering wheel on a hot day.

How is heat transferred to the driver’s hands?

• Radiation
• Convection
• Conduction
• Evaporation

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NGSS.MS-PS3-3

How does the sun warm the earth?

• Volcanoes

• Convection

• Radiation

• Conduction

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NGSS.MS-ESS2-4

Which way can heat never flow?

• From one object to another at the same temperature
• From a colder object to a hotter object
• From a hot object to a colder object
• From a solid object to a gas

When is thermal equilibrium achieved between two objects?

• When one object is larger than the other.
• When both objects are in motion.
• When the objects are made of different materials.
• When both objects have the same temperature.

Which statement is not necessarily true for two objects in thermal equilibrium?

• The objects' temperatures have both changed by the same amount.

• They can have different temperatures.
• They must be made of the same material.
• They exchange energy with each other.

Which phrase describes the idea that heat is transferred as thermal energy by the interaction of moving particles?

• thermal energy

• the kinetic theory of heat

• Convection
• Insulation

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Energy associated with the vibration of the particles that make up an object

• Kinetic Energy
• Mechanical Energy
• Non-mechanical Energy
• Potential Energy
• Thermal Energy

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NGSS.HS-PS3-4