The measure of the average kinetic energy of the particles in an object is called temperature.
Temperature is a fundamental concept in physics and thermodynamics. It indicates how hot or cold an object is and corresponds to the energy of its particles. When particles move faster, they have higher kinetic energy, which translates into a higher temperature. Conversely, slower-moving particles correspond to lower kinetic energy and lower temperatures. Temperature can be measured in various scales, including Celsius, Fahrenheit, and Kelvin.