Students discover the various ways in which tree rings can give information. After a brief disucssion of concentric tree rings, they use cross section cut outs of tree rings to identify the time and type of various naturally occuring...

In this absolute time worksheet, learners answer eleven questions about ways to measure the age of fossils. They define half-life, answer questions about radioactive dating, tree rings and varves.

In this absolute time activity, students define radiometric dating, tree rings and varves as means to measure absolute time. They are given information about each of these methods of dating.