Bozeman Science
ESS1C - The History of the Earth
In this video Paul Andersen explains in more detail the history of the Earth. He shows how the history of the Earth is written in the rocks that are built up over time. Fossils allow us to compare different rock layers relative to one...
Curated Video
Relative Age of Fossils
A video entitled “Relative Age of Fossils” describes the relative age of fossils.
Professor Dave Explains
Methods of Dating the Earth Part 2: Absolute Dating (Radiometric Dating)
We just learned about relative dating, but if you really want to calculate the age of a rock, absolute dating is what you need. This takes advantage of the presence of radioactive nuclides that decay at a reliable rate, so it is also...
Curated Video
Layers of History
A video entitled "Layers of History" which discusses how Earth's geographic features were formed, with a focus on the study of rock layers through absolute and relative dating.
Curated Video
The History of Life
The video “The History of Life” gives a brief overview of the major time spans in Earth’s history, focusing specifically on the formation of life and how that life changed over time.
Professor Dave Explains
Applications of Dendrochronology
Now that we know a bit about what dendrochronology is and how it's done, what can it be used for? In fact, tree ring studies are highly relevant in a multitude of other fields, including archaeology, ecology, forestry, paleoclimatology,...
Khan Academy
Khan Academy: Measuring Age on Earth: Potassium Argon (K Ar) Dating
Video lecture explores how K-Ar dating can be used to date very old volcanic rock and the things that might be buried in between. [10:35]