Major Topics and Objectives
5A. GAIA THEORY
What caused our atmosphere to form?
Dr. James Lovelock (5 minutes)
5B. GEOLOGIC EVENTS
How can the order in which geologic events occur be determined?
5C. CORRELATION TECHNIQUES
How can rocks and geologic events in one place be matched with other locations?
5D. DETERMINING GEOLOGIC AGES
How can Earth’s geologic history be sequenced from the fossil and rock record?
Geologic History in 5 1/2 minutes
5E. RADIOACTIVE DECAY
How can the absolute age of a rock be determined?
Lecture 5E Video Lesson: Radioactive Decay and Halflife
Study Questions Pre-Lab Worksheet E Half-life Video Worksheet
5F. THE FOSSIL RECORD
How can the rock record and fossil evidence reveal changes in past life and ancient environments?
Laboratory 5-1 Gaia Theory
Laboratory 5-2 Sequence of Events
Laboratory 5-3 Matching the Rock Layers
Laboratory 5-4 Geologic Time
Laboratory 5-5 Radioactive Decay
Laboratory 5-6 Reconstructing Past Events & Environments