Energy Transfer from Hot to Cold Objects

The total energy of all the particles in a substance is called

• temperature

• thermal energy

• degrees

• mass

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

The movement of thermal energy from a warmer object to a cooler object is called

• heat

• temperatur

• motion

• momentum

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

Heat transfer occurs

• in many directions

• both from warm objects to colder ones and from cold objects to warmer ones

• only from warm objects to colder ones

• only from cold objects to warmer ones

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

• thermal energy

• conduction

• convection

• temperature

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to particles as they heat up?

• They slow down
• Nothing
• They don't move
• They speed up

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to particles as they cool down?

• They slow down
• Nothing
• They don't move
• They speed up

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NGSS.MS-PS1-4

As you touch a hot stove the heat transfers -

• from your hand to the stove
• from the stove to your hand
• It doesn't transfer

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NGSS.MS-PS1-4

Hot objects begin to cool as-

• cooler air is transferred to the hot object.
• thermal energy in the object is transferred to the surrounding air.
• atoms in the object react with the oxygen in the air.
• thermal energy in the object cancels out energy in the air

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which sentence explains why a cold metal spoon placed in a pot of boiling water becomes hot?

• Thermal energy is transferred from the spoon to the water.
• Thermal energy is transferred from the water to the spoon.
• Thermal energy in the water is transformed into kinetic energy in the spoon.
• Thermal energy in the spoon is transformed into kinetic energy in the water.

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NGSS.MS-PS3-4

Which particles are moving fastest?

• Particles in ice.

• Particles in boiling water.

• Particles in water from the sink.

• Particles in steam.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4