Heat on the move conduction.

Conductors...

Heat can travel through solids, if you have ever tried to stir boiling soup using a metal spoon; you will know that, Heat energy quickly flows from the soup, through the spoon, to your hand.

Your fingers begin to get hot!

The movement of heat through the solid metal is called conduction.

The metal spoon conducts heat from the hot soup to your hand. The metal is called a good conductor because heat can flow easily through it.

.."Insulators...

If you do have to stir hot soup, it's much more sensible to use a wooden spoon, or a spoon with a plastic handle. Like most other non-metals, wood and plastic don't allow heat to flow easily through them. Substances like these are called insulators.

. . . And their uses…

Conductors and insulators can both be useful, but for different jobs. The bottom of a saucepan maybe made from a metal, like iron or aluminum, which lets heat flow quickly from the cooker to the food inside. But its handle is likely to be wooden or plastic. These materials won't let heat flow to your fingers and burn them.