Temperature is an intrinsic property of matter. It is a measure of the level of heat intensity of a body's thermal pressure. A high temperature indicates a high level of thermal pressure and the body is said to be hot. Likewise, a low temperature indicates a low level of thermal pressure and it is said that the
body is cold. Temperature is a function of internal kinetic energy and, as such, is an index of the average molecular speed.
Temperature is a scalar quantity, it is a thermodynamic variable. If two systems are in thermodynamic equilibrium, it can be said that their temperatures are equal.
