Heat Transfer: Conductors and Insulators

What is an insulator?

• A materials that lets energy flow through it easily.

• A material that energy can not flow through easily.

• A material that freezes easily.

• A material that burns easily.

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NGSS.MS-PS3-4

I accidently touched a light bulb that had been on for a few hours. How does the light bulb feel?

• bright

• hot

• wet

• cold

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NGSS.MS-PS3-4

Shirley needs a spoon to stir a bowl of hot soup. She wants to choose a spoon that will not conduct heat energy so that she will not burn her hand. Which spoon should she chose?

• metal

• woooden

• either of the spoons will be fine

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NGSS.MS-PS3-3

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Which of the following is a good conductor?

• metal

• wood

• plastic

• all of the above

Pot handles, steering wheels in cars, and swings on playgrounds are likely to be made of which material so they will not be too hot to touch.

• steel

• plastic

• copper

• aluminum

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NGSS.MS-PS3-3

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NGSS.MS-ETS1-2

Why is the coffee in a thermos hot even when the outside of the thermos is not?

• the thermos conducts heat

• the thermos is well insulated

• the thermos is a conductor

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NGSS.MS-PS3-3

When two objects rub together what is produced?

• ice

• gas

• heat

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NGSS.MS-PS3-3

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Changing from a solid to a liquid is called ____________.

• freezing

• evaporating

• melting

• condensation

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NGSS.MS-PS1-4

______________ occurs when a liquid changes into a gas.

• melting

• freezing

• condensation

• evaporation

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NGSS.MS-PS1-4

Imagine that you are cooking with a metal pan. What is a good way to keep your hand from getting burned?

• You will not get burned because the metal pan does not conduct heat.

• Cover the handle with aluminum foil.

• Cover the handle with an oven mitt.