Good and bad conductors of Heat

Thermal conductivity of a substance is the ability of that substance to conduct heat.

A measure of the “goodness” or the ”badness” of a substance for the flow of heat through conduction is provided by its thermal conductivity.

 

Good Conductors

Materials that allow heat to pass through them easily are called good conductors of heat.

 

Bad Conductors

Materials that do not conduct heat as easily and quickly as metals do are bad conductors.

Activity E

Take three rods, one each of Aluminium, Copper and Iron. Cover the rods with molten wax and the wax solidifies when it drops on the rods. Now put one end of each rod into a flame. Wax melts faster on three rods where materials have larger Thermal conductivity.