To become a certified teacher in Illinois, you will need to fulfill these requirements: 1  Step One: Complete a bachelor's degree and other prerequisite coursework required. 2  Step Two: Complete a state-approved teacher preparation program. 3  Step Three: Pass required exams.  Step Four: Submit an Illinois teaching credential application.
Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth. Most precipitation falls as rain.
Rain, starts as a liquid or solid higher in the atmosphere. As it falls it enters warmer air and melts. The surface temperature must be above freezing, usually by a few degrees. Freezing rain, forms as a solid and then passes through an above freezing level layer in the atmosphere (where it turns liquid). It then falls to a below freezing level (but does not refreeze). The surface temperature has to be below zero (generally speaking) Ice pellets, form the same as freezing rain but the surface temperature is much colder so it refreezes. Snow, forms as a solid from accretion of ice crystals or by stealing water from liquid water droplets (this is called the Bergeron effect and I will explain it if anyone ever asks about it). It falls as a solid.