Curated OER
Measuring Absolute Time
In this absolute time learning exercise, students answer eleven questions about ways to measure the age of fossils. They define half-life, answer questions about radioactive dating, tree rings and varves.
Curated OER
How Do We Measure Absolute Time?-Geologic Clocks
In this absolute time worksheet, 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.
CK-12 Foundation
Ck 12: Earth Science: Tree Rings, Ice Cores, and Varves
[Free Registration/Login may be required to access all resource tools.] How scientists can determine age and other features of a rock or material it contains.
CK-12 Foundation
Ck 12: Earth Science: Tree Rings, Ice Cores, and Varves
[Free Registration/Login may be required to access all resource tools.] How scientists can determine age and other features of a rock or other material.
CK-12 Foundation
Ck 12: Earth Science: Tree Rings, Ice Cores, and Varves Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about tree rings, ice cores, and varves. Includes a question to check for understanding.