Heat= The energy which is manifested by temperature.

Potential Energy= The energy related to position or state of existence.

Kinetic Energy= The energy possessed by a moving body by virtue of its velocity.

Radiant Energy= The energy of electro magnetic radiations.

Chemical Energy= The energy released by substances during chemical reactions.

Nuclear or Atomic Energy= The energy released when atoms are split.

Chemistry= The branch of natural science that deals with the identification of matter and the changes that result as the energy content it transformed from one form to another.

Meter= The fundamental unit of length in the metric system.