Answer:
TRUE
Explanation:
Shock waves are propagation disturbances whose properties (temperature, density and pressure) vary. They are produced when a speed above the speed of sound is reached.
An object at supersonic speed generates shock waves. This happens not only at the speed of sound but at any supersonic speed.
The shock wave arises from the fact that the medium undergoes an irreversible adiabatic compression at the front of the object moving through it. In this region the pressure and temperature rise above the values of the undisturbed environment.
