Question

Does the glass have high thermal conductivity?

Answer 1

Hint:Thermal conductivity is defined as the property of a material with which it can transfer or conduct heat. It is given by the units Watts per metre per Kelvin.

Complete step by step solution:
The heat can be transferred from one material to another if there is a temperature difference between the two. That means one of the materials is at a higher temperature while the other is at a lower temperature. The molecules of the materials vibrate about their mean positions and then heat is transferred. Glass is an example of amorphous solids since in glass the particles can move. So, it can not be considered a complete solid. Therefore, it can be said that the atoms in glass are arranged in a non-continuous or random arrangement which makes it difficult to transfer heat. So, glass has low thermal conductivity.

Hence, glass has very low thermal conductivity.

Note:It is important to note that there are three methods or techniques which are used to transfer heat. They are conduction, convection and radiation. Conduction is a method which is used to transfer heat in solids in which particles vibrate about their mean position and transfer heat. Convection is a method of transfer of heat which is used for liquids as well as gases. In this method, the particles of the medium actually move from their position to transfer heat. Radiation is the method of heat transfer which is used in a vacuum using electromagnetic waves and which does not need any medium for heat transfer.