What is thermal energy? the average overall volume of a system the total number of molecules in a system the kinetic energy of particles in a system the measure of temperature in a system

Option (c) is the correct answer.

Explanation:

The internal energy of a substance that occurs due to the kinetic energy of molecules or atoms inside the substance.

Therefore, we can conclude that thermal energy is the kinetic energy of particles in a system.

As it is known that energy can neither be created nor it can be destroyed. It only transforms from one form to another.

When the molecules or atoms strike at the walls of the system then the energy of molecules or atoms get transferred to the walls of the system. As a result, the system will become hotter.

Therefore, more is the kinetic energy of the molecules or atoms, more hotter will be the system.