Every living creature can leave a fossil record, yet most fossils belong to extinct organisms rather than ones currently living. Scholars learn about dating rock layers, fossils, and the environment of the past. Pupils understand that...

Explains what absolute dating is as compared to relative dating and how they can work together. The characteristics of several different radiometric methods are compared. Includes three short videos and an interactive where students...

[Free Registration/Login may be required to access all resource tools.] How scientists can learn information about the past from fossils.

[Free Registration/Login may be required to access all resource tools.] How scientists can learn information about the past from fossils.

How scientists can learn information about the past from fossils. [Free Registration/Login may be required to access all resource tools.]

[Free Registration/Login may be required to access all resource tools.] How rock layers in different locations can be connected to make pictures of a region's geology.

[Free Registration/Login may be required to access all resource tools.] How rock layers in different locations can be connected to make pictures of a region's geology.

[Free Registration/Login may be required to access all resource tools.] Looks at how stratigraphy can be used to determine the relative ages of rocks, how unconformities occur, ways to match rock layers in different areas, and how...

[Free Registration/Login may be required to access all resource tools.] Describes how scientists learn about the past by examining and dating fossils.

[Free Registration/Login may be required to access all resource tools.] This comprehensive lesson by CK-12 explains how scientists learn about the past by examining and dating fossils.

In this interactive tutorial you will explore how geologists use clues in rocks to determine the order in which rocks formed. Learn how principles of radioactivity are used to assign actual ages to rocks. Students will explore fossils...

[Free Registration/Login may be required to access all resource tools.] How scientists have been able to determine the age of Earth.

[Free Registration/Login may be required to access all resource tools.] How scientists have been able to determine the age of the Earth.

In this amazing interactive tutorial you will learn about what methods are used by geologists to learn about the history of the Earth. Investigate a geologic time scale and learn about how scientists have developed and organized a record...

Learn about geologic time, including the age of the Earth by putting it in terms of pages in a book.

Fossils found in Argentina have led scientists to change the way they think about the evolution of dinosaurs. A relative of the velociraptor has been found that demonstrated bird-like features. Learn more about these fossils here. [Date...