For the last three months, “volcanology” has been on the minds of Upper Elementary students and their teachers. The foundation of their volcano studies began with an understanding of plate tectonics. On Earth, there are seven or eight major plates (depending on how they are defined)and many minor plates. Our students investigated 16 different plates. Where plates meet, their relative motion determines the type of boundary: convergent (move towards each other), divergent (move away from each other). Earthquakes and volcanic activity occur along these plate boundaries.