Modes of Transfer of Heat
Heat can be transferred from one object to another in three main ways: conduction, convection, and radiation.

Conduction
Conduction is the transfer of heat through a material without any movement of the material itself. It occurs when two objects at different temperatures come into contact with each other. The heat energy is transferred from the warmer object to the cooler object until they reach thermal equilibrium.

Convection
Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when a fluid is heated, becomes less dense, rises, and is replaced by cooler fluid. This cycle continues, creating a convection current that transfers heat throughout the fluid.

Radiation
Radiation is the transfer of heat through electromagnetic waves. Unlike conduction and convection, radiation does not require a medium to transfer heat. All objects emit radiation in the form of infrared waves, and this radiation can be absorbed by other objects, causing them to heat up.
Each mode of heat transfer plays a crucial role in our daily lives and in the functioning of various systems. Understanding these modes helps us design more efficient heating and cooling systems, as well as improve our understanding of the natural processes that govern our environment.