All matter is made of tiny particles called atoms, molecules and ions. These tiny particles are always in motion – either bumping into each other or vibrating back and forth. It is the motion of particles that creates a form of energy called heat<span> (or</span>thermal<span>) energy that is present in all matter.
I really wish you provided the research study. I would be happy to answer. It should be attached to wherever you found this question. Hope this helps :)
