Explain why heat does not travel through solids by means of convection. - Leaving Cert Physics - Question c - 2013

Heat does not travel through solids by means of convection because convection relies on the movement of particles to transfer thermal energy. In liquids and gases, particles can move freely, allowing for the transportation of heat through the bulk movement of the fluid.

In contrast, solids have particles that are tightly packed and held in fixed positions. Although they can vibrate around their fixed positions, they cannot move more freely as is the case in fluids. This restriction prevents the bulk movement necessary for convection to occur, meaning that heat transfer in solids generally occurs through conduction instead.

Thus, the inability of solid particles to move freely limits heat transfer via convection.