Answer:
Thermal energy is directly proportional to particle movement.
Step-by-step explanation:
Thermal energy is a form of energy from heat. When applied to a given substance, it increases the kinetic energy of the particles. Thus the average rate of motion of the particles of the substance increases, likewise its temperature.
Therefore, an increase in thermal energy increases particle movement of a substance. And a decrease in thermal energy decreases the particle movement of a substance. Thus, thermal energy is directly proportional to the particle movement of a given substance.