Describe the process of convection and provide ... - SS2 Physics Heat and Thermodynamics Question

Convection is the heat transfer mechanism that occurs in fluids (liquids or gases) through the movement of particles. It involves the transfer of heat by the bulk movement of the fluid. Natural convection occurs when heat is transferred due to the density differences within the fluid. For example, hot air rising and cool air sinking in a room is an example of natural convection. Forced convection, on the other hand, is when the fluid movement is induced by an external force, such as a fan or a pump. Cooling a computer with a fan or circulating heated water in a radiator are examples of forced convection.