Update
06-26-1997
Content Type
Activity
Grade Level
Sixth grade, Seventh grade, Eighth grade
Object Type
Website
License

Rocks and Layers introduces the Laws of Superposition and Original Horizontality and describes stratigraphy as the study of rock layers or strata. The distribution of various types of plants and animals in a modern landscape is shown to illustrate how certain types of fossils indicate specific types of environments.