Welcome to the Science Quiz 88

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This is a timed quiz. You will be given 15 seconds per question. Are you ready?

Why does the bottom of a lake not freeze in severe winter even when the surface is all frozen?

The conductivity of ice is low

The temperature of the earth at the bottom of the lake is high

The water has large specific heat

None

Correct! Wrong!

A block of ice?

Can absorb heat but cannot radiate heat

Can radiate as well as absorb heat

Can radiate heat but cannot absorb heat

None

Correct! Wrong!

Specific heat is ?

The energy needed to increase the temperature of 1 gram of a substance by 1 degree Celsius

The amount of heat conducted in 1 minute

The specific temperature at which the substance is in solid state

None

Correct! Wrong!

Which of the following is the fastest process of heat transfer?

Convection

Conduction

Insolation

Radiation

Correct! Wrong!

A cooking pot is coated black because?

Black substances absorb more heat

None

Correct! Wrong!

How will a metal container full of hot water in vaccum lose heat?

By convection

By radiation

By conduction

None

Correct! Wrong!

As a solid undergoes a phase change to a liquid state, it?

Absorbs heat while remaining at a constant temperature.

Releases heat as the temperature decreases.

Releases heat while remaining at a constant temperature.

None

Correct! Wrong!

What would be the thermal resistance of an ideal conductor?

None of these

Correct! Wrong!

Science Quiz 88

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