EVERYDAY SCIENCE

Detailed explanation-1: -Heat transfer takes place from one molecule to another molecule as a result of the vibratory motion of the molecules. Heat transfer through the process of conduction occurs in substances which are in direct contact with each other. It generally takes place in solids.

Detailed explanation-2: -Conduction is the transfer of energy from one molecule to another by direct contact. This transfer occurs when molecules hit against each other, similar to a game of pool where one moving ball strikes another, causing the second to move.

Detailed explanation-3: -Conduction is the most direct and intense transfer of energy but it only happens through direct contact so it has no effect on any material that isn’t making contact.

Detailed explanation-4: -In conduction, heat transfer occurs between objects by direct contact. In convection, the heat transfer takes within the fluid. In radiation, heat transfer occurs through electromagnetic waves without involving particles. The heat transfer takes place due to the difference in temperature.

Detailed explanation-5: -Direct-contact heat transfer involves the exchange of heat between two fluids by bringing them into intimate contact with each other. While one of the fluids involved is the continuous phase or the ‘quiescent phase’, the other, which is intimately mixed with the former, is called as the ‘dispersed phase’.