EXAM - Heat Transfer Flashcards

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1
Q

What is the process of heat transfer in a solid

A

Conduction

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2
Q

Difference between a thermal conductor and an insulator

A

The conductor is the type of material which allows the electric current or heat to pass through it whereas the insulator does not allow the electric current or heat to pass through it.

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3
Q

Three examples of thermal conductors

A
Silver.
Gold.
Copper.
Diamond.
Stainless steel.
Aluminum.
Beryllium oxide.
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4
Q

Three examples of an insulator

A
Rubber.
Glass.
Pure water.
Oil.
Air.
Diamond.
Dry wood.
Dry cotton.
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5
Q

The process of heat transfer for fluids

A

Convection is the process of heat transfer from one location to the next by the movement of fluids.

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6
Q

The process of heat transfer in a gas

A

Convection is the process of heat transfer from one location to the next by the movement of fluids.

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7
Q

Why can heat radiation travel through a vacuum

A

This is because radiation involves electromagnetic waves, not particles, and is therefore able to transmit heat across a vacuum.

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8
Q

Which surfaces are best absorbers of heat radiation

A

Black surfaces are the best absorbers of heat radiation.

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9
Q

Why are teapots and Kettles silver

A

To stop heat escaping by radiation

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10
Q

Why are stoves dull black

A

To radiate heat to a room

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11
Q

Why are blankets shiny silver in a first aid kit

A

To stop heat los from a person pulled from a cold sea

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12
Q

What surface is the best emitter of heat

A

Dull Black

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