Final answer:
Temperature is a measure of the average kinetic energy of particles in matter, indicating hotness or coldness. It is not a direct measurement of the energy contained in a substance.
Step-by-step explanation:
Temperature is a measure of the average kinetic energy of the particles in matter. It indicates how hot or cold an object is relative to another object. Temperature is not a direct measurement of the energy contained in a substance, but rather a manifestation of the thermal energy of the matter.