People who study Earth's history use a type of calendar called the geologic time scale. It looks very different from the familiar calendar. In some ways it is more like a book and the rocks are its pages. Some of the pages are torn or missing and the pages are not numbered but geology gives us the tools to help us read this "book." In this program students will discover the relative time scale, the various forms of life in the rock layers and explore the Numeric Time Scale. This program also discusses the three main concepts, which are important in the study and use of fossils.
Subjects Covered Include: - How fossils represent the remains of once-living organisms
- Why most fossils are the remains of extinct organisms
- The kinds of fossils found in rocks of different ages differ because life on Earth has changed over time
Dr. Laurence J. Jankowski is an Associate Professor Emeritus at Bowling Green State University in Ohio. He has been a member of The National Science Teachers Association, The National Association of Geology Teachers and the Ohio Academy of Science who gave him the Science Teacher of the Year Award. He is also the recipient of several National Science Foundation education grants.