Predicting the properties of a material undergoing this process can be tracked by following a certain diagram’s C and Ps (“P-S”) curves. One form of this process is divided into bubble forming, vapor transport, and liquid contact phases. This process is represented by descending on the y-axis until hitting “the knee” of a TTT diagram. The rate of this process determines whether austenite transitions (-5[1])into pearlite, bainite, or martensite (“martins-ite”). A solid undergoes this process more slowly than expected after being immersed in water due to the formation of a steam layer in the Leidenfrost (-5[1])(“ley-den-frost”) effect. (-5[1])In metallurgy, a metal is dunked in oil (10[1])or water in order for the metal to rapidly undergo this process during quenching. For 10 points, (10[1])name this process in which the temperature of a material decreases. ■END■ (10[3])