Define heat transfer in solids.

(N/A) Heat transfer in solids occurs primarily through the process of $Conduction$.
In this process,heat energy is transferred from one part of a solid to another,or from one solid to another in physical contact,without the actual movement of the constituent particles (atoms or molecules) from their equilibrium positions.
Instead,the energy is transferred through molecular vibrations and the movement of free electrons (in metals),where higher-energy particles collide with their neighbors,transferring kinetic energy to them.