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When heat is transferred by molecular cooling, it is referred to as heat transfer by

When heat is transferred by molecular cooling, it is referred to as heat transfer by Correct Answer conduction

​Concept:

Three modes of Transmission of heat/heat flow

Sr. No

Conduction

Convection

Radiation

1

Heat dissipates from one place to another by molecular vibration or collision

Heat is transfer from one place to another by transfer of molecules

It transfers heat in the form of electromagnetic wave

2

Conduction is relevant to solid only.

Convection happens in liquid or gases

It can heat any form of material.

3

Need medium to transfer heat

Need medium to transfer heat

No need of medium

4

Good Conductor- The objects which transfer heat easily. Ex- metals, human body etc

Bad Conductor- The objects which do not transfer heat easily. Ex- Wood, Air, etc.

Thermal Insulator- No heat is transferred by any means.

Ex- Abonite, asbestos etc.

When molecules are heated they headed upward and upper molecules go downward and this cyclic process continues.

 

Boiling of fluid

Heat travels in terms of energy packets or waves

The heat absorbed by body gain energy

 

Radiations of Sun

Additional Information

Scattering:

  • The air molecules, water vapor, and dust particles scatter the solar radiation as it passes through the atmosphere.
  • A part of this scattered radiation also reaches the atmosphere.

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