Good and Bad Conductor of Heat

Somehow, all the objects in the universe can be associated with heat.

The handles of cooking utensils are mostly made of wood or plastic.

During the winter season, people wear woolen clothes.

In the summer season, ice is covered with saw-dust during transportation.

Generally, if we are going to somewhere. Then we use the iron to press the clothes.

All the examples explained till now are related to heat conduction.

First of all, we have to know how heat is conducted through materials.

Conduction is the mode of heat transfer in which heat is transferred from one end to another without any net movement of the particles.

The conduction is possible when two ends of the conductor have different temperatures.

There must be a medium present between two ends to conduct the heat.

Some of the materials are good conductor of heat and some are bad conductor of heat.

Let's discuss about good and bad conductors of heat.

Materials through which the heat can be conducted easily are called good conductor of heat.

Metals are good conductor of heat. For example silver, copper, aluminium etc.

Materials through which heat cannot be conducted easily, are called bad conductors of heat.

Non-metals are the bad conductor of heat. For example wood, plastic etc.

Hence, cooking utensils have wooden or plastic handles. Because wood or plastic is the bad conductor of heat.

The cooking pan is made of a good conductor of heat (aluminum, steel) to transfer the heat from the stove to the food.

If handles are not made of wood or plastic then we feel more temperature after touching.

Hence, it is necessary that the handles of cooking utensils are made of some non-conducting materials such as wood or plastic.

Woolen clothes are the bad conductor of heat. Therefore, during the winter season, the people wear them.

Woolen clothes protect the body from the ambient temperature which is lower than the body temperature in the winter season.

Ice is covered with saw-dust during transportation because saw-dust is a bad conductor of heat.

Hence, the saw dust protects the ice from melting.

The iron press has good conducting surface so that proper heat transfer takes place between the iron and the cloth.

Revision

The conduction is possible when two ends of the conductor have different temperature.

There must be a medium present between two ends to conduct the heat.

Ice is covered with saw-dust during transportation because saw-dust is a bad conductor of heat.

The End