The melting of the chocolate pieces one by one showed that it was caused by heat flowing through the foil bridge. The transfer of heat happened between the foil bridge and the chocolate pieces because they were touching each other.
The particles of a liquid, such as water, are more able to move around than the particles of a solid, such as foil. Water particles with more heat move to areas where there are water particles with less heat. In other words, convection allows heat to be transferred from warmer places to cooler places.
<span>About one in eight young drivers believes using recreational drugs such as marijuana, cocaine, speed, or ecstasy does not affect their driving.</span>
