Mystery Elements: Most of the  earth's crust is made up of only 8 elements which are referred to as "the most abundant elements of the earth's crust." In this activity students will identify these 8 elements by using a set of given clues about the "mystery elements."

Earth's Interior and Plate Techtonics: Just as a child may shake an unopened present in an attempt to discover the contents of a gift, so man must listen to the ring and vibration of our Earth in an attempt to discover its content. This is accomplished through seismology..