About This Chapter
Who's it for?
Anyone who needs help learning or mastering introductory anthropology material will benefit from taking this course. There is no faster or easier way to learn introductory anthropology. Among those who would benefit are:
- Students who have fallen behind in understanding the main subdivisions of geologic time, including epochs, periods, eras and major eons
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning social science (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn about geologic time and anthropology
- Students who struggle to understand their teachers
- Students who attend schools without extra social science learning resources
How it works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the Geologic Time and Anthropology chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the Geologic Time and Anthropology chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any geologic time question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students will review:
This chapter helps students review the concepts in a geologic time unit of a standard introductory anthropology course. Topics covered include:
- Geologic time scale
- Theories of geological evolution
- Methods of geological dating
- Relative dating
- Conditions of fossil preservation
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. What Is Archaeology? - Definition, History & Topics
This lesson will describe the science of archaeology. Topics will include the definition and history of archaeology, as well as a brief description of its sub-disciplines.
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Other chapters within the Intro to Anthropology: Help and Review course
- Introduction to Anthropology: Help and Review
- Anthropology Perspectives: Help and Review
- DNA and Cell Division: Help and Review
- Genetics for Anthropologists: Help and Review
- Evolution for Anthropologists: Help and Review
- DNA Mutations: Help and Review
- Physical Anthropology: Help and Review
- Anthropology & Ancient History: Help and Review
- Human and Cultural Migrations: Help and Review
- People and the Environment: Help and Review
- Agriculture & Domestication: Help and Review
- Ethnicity and Geography
- Studying Land Resources in Anthropology: Help and Review
- The Nature of Culture: Help and Review
- Art History and Anthropology: Help and Review
- Language and Communication in Anthropology: Help and Review
- Spatial Processes
- Settlement Patterns in Anthropology: Help and Review
- Studying Societies in Anthropology: Help and Review
- Studying Economic Systems in Anthropology: Help and Review
- Family Relationships in Anthropology: Help and Review
- Studying Political Organization in Anthropology: Help and Review
- Studying Religion in Anthropology: Help and Review
- Applications of Anthropology: Help and Review