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
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