8. Conduction. (Conduction is the transfer of heat that happens when particles collide with each other. It can happen in solids, liquids, and gases.)
Before the pan is placed on the burner, its particles are moving at the same average speed. The whole pan is at the same temperature. The hot burner is at a much higher temperature. In other words, the particles that make up the burner are moving at a greater average speed and therefore have greater thermal energy.
8b. Convection. During convection, however, the particles themselves move. This happens only in liquids and gases because the particles in solids are stuck in place and cannot move.
