Heat Energy Flashcards by Idowu Oluwanifemi | Brainscape

Q

How do materials conduct heat?

A

Passing energy from molecule to molecule

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Q

If it causes an electron to move it is

A

An electric current

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Q

The passing of heat energy does not involve

A

Flow of molecules themselves

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Q

Conventional current occurs when

A

Liquid or gas rises above a source of heat

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Q

Convection occurs as a result of

A

Change in density

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Q

Radiant heat is absorbed by

A

All objects causing a temperature rise

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Q

When water contrasts,its

A

Density increases

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Q

When water freezes,its

A

Volume increases

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Q

Water reaches its maximum density at

A

4 degree Celsius

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Q

When a pond is freezing over, the water at the bottom of the pond is

A

4 degree Celsius

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Q

Water has its minimum volume at

A

4 degree Celsius

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Q

E.m.f is equal to

A

Power ÷current

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Q

Absolute zero of a gas is where the

A

Volume becomes zero

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Q

In pressure law, gas is heated but

A

Not allowed to expand

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Q

Heat capacity depends on

A

Mass

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