Question

define the terms of (a) conduction (b) convection (c) radiation

Answer 1

In solids, transfer of heat is through the process of conduction.

The process of transference of heat through a fluid (liquid or gas) is called convection. Water and air are poor conductors of heat, and heat transfer in these mediums takes place by the process of convection.

Radiation is a method of heat transfer which does not require a medium.