Students observe the motions of spinning eggs to determine which are raw and hard-boiled. They will apply what they have learned to understanding how scientists determine whether the center of a planet is liquid or solid. Materials Two eggs, one raw and one hard-boiled per group, or one set for a class demo Paper towels Antiseptic cleaner or wipes Large bowl or trash can (Optional) aluminum pie tins Management Students should work in groups of two to three. Working with raw eggs has the potenti