CK-12 Foundation
Ck 12: Earth Science: Radiometric Dating Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about methods used in radiometric dating. Includes a few questions to check for understanding.
Science Education Resource Center at Carleton College
Serc: Teaching Radioactive Decay & Radiometric Dating
A laboratory activity that teaches the difficult concept of radioactive decay by means of a fluid (shampoo) flowing through holes from an upper to a lower beaker. Using the exponential decay equation, young scholars then 'date' the...
Other
Western Oregon University: Earth System Science: Geologic Time [Pdf]
An 81-page slideshow that looks at the principles of geology with respect to relative dating, at different concepts describing geological processes, at absolute age and radiometric dating, at the eons and eras in the geologic time scale,...
CK-12 Foundation
Ck 12: Earth Science: Radiometric Dating
[Free Registration/Login may be required to access all resource tools.] Elaborates on radioactive decay as a tool for determining the age of certain minerals and other materials, including the limits of the technique.
CK-12 Foundation
Ck 12: Earth Science: Radiometric Dating
[Free Registration/Login may be required to access all resource tools.] How scientists can use radioactive decay to find the age of certain materials.
McGraw Hill
Mc Grawl Hill: Dino Dig
A virtual lab allows you to do radiometric dating on dinosaur bones. You'll be using a mass spectrometer and utilizing several steps of the scientific method.
Other
Science X: Research Illuminates Inaccuracies in Radiocarbon Dating
This article discusses research on the accuracy of radiocarbon dating. It was determined that the standards used for radiocarbon dating may be flawed due to variations to the radiocarbon cycle in different climatic regions of the world....
US Geological Survey
Usgs: Geologic Time
This large U.S. Geological Survey site offers a look at the age of the earth, how radiometric dating is used to calculate it, the major divisions of geologic time, and the classification and use of fossils.
Science Struck
Science Struck: Relative vs. Absolute Dating
Explains what relative and absolute dating are and some different methods used for each. A Venn diagram is presented showing what characteristics they share and how they differ.
Science Struck
Science Struck: How Does Carbon 14 Dating Work?
Learn about carbon-14 dating and how it works.
US Geological Survey
The Numeric Time Scale
This is a good source for getting an in-depth description of using radioactive decay to measure the ages of rocks. In addition to describing the process of radiometric dating, this resource also includes a geologic time scale and four...
Woods Hole Oceanographic Institution
Woods Hole Oceanography Institute: Introduction to the Galapagos Islands
Find out how scientists at Woods Hole Oceanography Institute use radiometric dating to figure out the age of volcanoes. A slideshow of the history of radiometric dating can also be viewed.
Other
Georgia Perimeter College: Radiometric Dating Assignment
This educational resource provides information to help students understand the concept of half life.
Other
Utah Geological Survey: How Do Geologists Know How Old a Rock Is?
Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the...
Other
How to Date a Fossil
Radiometric dating, fission-track dating, and amino-acid dating are explained in this succinct site.
US Geological Survey
Usgs: What Is Geologic Time?
Understand the evidence for ancient earth and the geologic time scale. Learn on this site how the earth can help scientist date discoveries.
Science Education Resource Center at Carleton College
Serc: Investigating the Geologic Time Scale: Trends in Geologic Time
In this Earth Science indoor laboratory inquiry, learners will create their own geologic time scale based on observation of teacher supplied, historically correct fossil data and also relevant rock samples with the age of the rock sample...
Curated OER
National Park Service: What Is Geologic Time?
A discussion of geologic time, along with a presentation of evidence for the time span involved.
Georgia Department of Education
Ga Virtual Learning: Geologic Time and Correlation
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...
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.
Extreme Science
Extreme Science: How Old Is the Earth?
We say Earth is 4.6 billion years old, but how do we know? How do we measure its age? This article focuses on these questions and how long life has been on Earth.
CK-12 Foundation
Ck 12: Life Science: Fossils
[Free Registration/Login may be required to access all resource tools.] Fossils are the preserved remains of animals, plants, and other organisms from the distant past. By studying fossils, evidence for evolution is revealed....
University of California
University of California Museum of Paleontology: Geologic Time
Learn about geologic time, including the age of the Earth by putting it in terms of pages in a book.