what is the transport of heat by simple contact of a hot body and a cold body, without transfer of material.

The transport of heat by simple contact of a hot body and a cold body, without transfer of material, is known as conduction. Here are the steps explaining this process:

1. Conduction occurs when two objects at different temperatures are in contact with each other.

2. Heat flows from the hotter object to the cooler one. This is because heat always moves from high temperature areas to low temperature areas to achieve thermal equilibrium.

3. The particles of the hot object vibrate faster due to the higher energy associated with the higher temperature.

4. As these particles collide with the particles of the cooler object, they transfer some of their energy.

5. This energy causes the particles of the cooler object to vibrate faster, thus increasing its temperature.

6. This process continues until both objects reach the same temperature.

Conduction is the main method of heat transfer in solids, where the particles are closely packed and can easily pass on their energy. It's less effective in liquids and gases