Energy-transfer sentence example

The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another. This law is taught in physical science and physics classes in middle schools and high schools, and is used in those classes as well as in chemistry classes.

Heat and heat energy are terms we use to describe the level of activity for the molecules in an object. An object with molecules that are very "excited" and move around rapidly is known as being hot, while an object with molecules whose atoms move around less rapidly is known as cold. The heat energy, or thermal energy, can be transferred between objects. So, heat refers to this energy transfer between objects, while temperature refers to the energy contained within the objects.