Demonstrate how older rock layers are deposited at the bottom before younger layers (Law of Superposition).

Number: SC.7.E.6.In.3	Category: Independent
Date Adopted or Revised: 02/08	Big Idea: Earth Structures : Over geologic time, internal and external sources of energy have continuously altered the features of Earth by means of both constructive and destructive forces. All life, including human civilization, is dependent on Earth's internal and external energy and material resources.