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- Become familiar with the geologic time scale.
- Compare and contrast theories of geological evolution.
- Differentiate between numerical and relative dating.
- Describe the principles and laws used in relative dating.
- Identify the three common types of radioactive decay.
- Explain the methods of radiometric dating.
- Describe the conditions that favor fossil preservation.
- Explain how fossils can be used in relative dating.
1. Geologic Time Scale: Major Eons, Eras, Periods and Epochs
The geologic time scale is an essential tool for understanding the history of Earth and the evolution of life. In this lesson, explore the principal eons, eras, periods, and epochs that help us track major events in geologic history.
2. Theories of Geological Evolution: Catastrophism vs Uniformitarianism
Geologists haven't always agreed about the history of our planet. They have debated between catastrophism and uniformitarianism over the last few hundred years! Learn about the two main theories of geologic evolution and how scientists came to resolve the dispute.
3. Methods of Geological Dating: Numerical and Relative Dating
Learn how scientists determine the ages of rocks and fossils. We'll explore both relative and numerical dating on our quest to understand the process of geological dating. Along the way, we'll learn how stratigraphic succession and radioactive decay contribute to the work of paleontologists.
4. What is Relative Dating? - Law of Superposition, Principles of Original Horizontality & Cross-Cutting Relationships
Discover how geologists study the layers in sedimentary rock to establish relative age. Learn how inclusions and unconformities can tell us stories about the geologic past. We'll even visit the Grand Canyon to solve the mystery of the Great Unconformity!
5. Principles of Radiometric Dating
Radiometric dating is a method used to determine the age of rocks and other materials based on the rate of radioactive decay. Learn about three common types of radioactive decay: alpha decay, beta decay and gamma decay.
6. Radiometric Dating: Methods, Uses & the Significance of Half-Life
Radiometric dating is used to estimate the age of rocks and other objects based on the fixed decay rate of radioactive isotopes. Learn about half-life and how it is used in different dating methods, such as uranium-lead dating and radiocarbon dating, in this video lesson.
7. Conditions of Fossil Preservation: Rapid Burial, Hard Parts & the Elements
Learn how fossils are formed and how varying conditions affect the preservation of organisms. What is the best way for a dinosaur to become fossilized? Find out here!
8. Relative Dating with Fossils: Index Fossils as Indicators of Time
You may already know how to date a fossil with a rock. But did you know that we can also date a rock with a fossil? Watch this video to find out how we use index fossils to establish the relative ages of rocks.
9. Lystrosaurus: Facts & Overview
Why is a stumpy-legged, pig-sized reptilian cousin of mammals such an interesting fossil genus? There are actually several reasons, which you will learn about in this lesson.
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Other chapters within the Earth Science: Tutoring Solution course
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- Plate Tectonics: Tutoring Solution
- Minerals and Rocks: Tutoring Solution
- Igneous Rocks: Tutoring Solution
- Volcanoes: Tutoring Solution
- Weathering and Erosion: Tutoring Solution
- Sedimentary Rocks - A Deeper Look: Tutoring Solution
- Metamorphic Rocks - A Deeper Look: Tutoring Solution
- Rock Deformation and Mountain Building: Tutoring Solution
- Water Balance: Tutoring Solution
- Running Water: Tutoring Solution
- Ground Water: Tutoring Solution
- Glaciers: Tutoring Solution
- Oceans: Tutoring Solution
- Coastal Hazards: Tutoring Solution
- The Atmosphere: Tutoring Solution
- Weather and Storms: Tutoring Solution
- Earthquakes: Tutoring Solution
- Earth History: Tutoring Solution
- Energy Resources: Tutoring Solution