Heat Test

Result

Heat Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

A substance ‘X’ does not allow heat to pass through it easily. Which of the following material do you think the substance could be made up of?

A
Iron

B
Aluminum

C
Wood

D
Copper

Solution

The substance X did not allow heat to pass through it easily. This means it is an insulator.

Metals like aluminum, copper and iron are conductors and allow heat to pass through them easily. Wood on the other hand is an insulator which means it won’t allow heat to pass through it easily.
Question 2
1 / -0

Which of the following is an example of conductor of heat?

A
Plastic

B
Paper

C
Rubber

D
Copper

Solution

The materials which allow heat to pass through them easily are called conductors of heat. Mostly metals are conductors of heat. Example: copper, iron and aluminium.

Hence, option D is correct.
Question 3
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The transfer of heat which does not require any medium is called ____

A
Conduction

B
Convection

C
Radiation

D
Vaporization

Solution

Heat transfer from a body with a high temperature to a body with a lower temperature, when bodies are not in direct physical contact with each other or when they are separated in space, is called heat radiation. Therefore, there is no contact in radiation. Hence, C is the correct answer.
Question 4
1 / -0

Name the process by which heat comes from sun to the earth?

A
Conduction

B
Convection

C
Radiation

D
Both A and B

Solution

The process in which heat flows from one object to another either through a medium or vacuum is called radiation. The heat absorbed from the surroundings by a body increases its temperature.
The sun warms the earth through radiation.

Hence, option C is correct.