Thermal energy is due to the movement of the particles which make up matter.
The particles of a body at a low temperature will have less kinetic energy (less velocity) than another one which has a higher temperature. The transfer of thermal energy from one body to another (due to a difference in temperature) is called heat.
Movement of the particles of matter in its solid state Movement of the particles of matter in its gaseous state

Licencia de Creative Commons
Except where otherwise noted, this work is licensed under a Creative Common License