P2 Energy transfer by heating Flashcards

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1
Q

Do metals conduct energy better than non-metals?

A

Yes.

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2
Q

Is copper a better conductor than steel?

A

Yes.

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3
Q

Does glass conduct better than wood?

A

Yes.

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4
Q

What does the energy transfer by conduction through a material depend on?

A

The thermal conductivity of the material.

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5
Q

What are materials that are good insulators necessary for?

A

Keeping you warm in winter, whether at home or outdoors..
Good insulators need to be materials that have low thermal conductivity, so energy transfer through them as < as possible.

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6
Q

What does the energy transfer per second through a layer of insulating material depend on?

A

Temperature difference across material.
Thickness of material.
Thermal conductivity of material.

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7
Q

When you are in sunlight, what are you absorbing?

A

Infrared radiation.

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