Heat and Energy

Heat energy, or thermal energy, is defined as the transfer of thermal energy from one object to another, and is caused by the vibrating movements of atoms in an object. Heat acts a little like electrical energy, in that certain materials conduct it better than others.

Example - When you pour milk in a hot drink like tea, the milk becomes warm because the thermal energy is transferred from the hot tea, to the milk. The tea in turn becomes cooler, because it gave some of its thermal energy to the milk.