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Ch 20: Geologic Time: Tutoring Solution

About This Chapter

The Geologic Time chapter of this High School Biology Tutoring Solution is a flexible and affordable path to learning about geologic time. These simple and fun video lessons are each about five minutes long and they teach all of the geologic time theories and principles required in a typical high school biology course.

How it works:

  • Begin your assignment or other high school biology work.
  • Identify the geologic time concepts that you're stuck on.
  • Find fun videos on the topics you need to understand.
  • Press play, watch and learn!
  • Complete the quizzes to test your understanding.
  • As needed, submit a question to one of our instructors for personalized support.

Who's it for?

This chapter of our high school biology tutoring solution will benefit any student who is trying to learn about geologic time and earn better grades. This resource can help students including those who:

  • Struggle with understanding the geologic time scale, geological evolution theories, relative dating, radiometric dating, fossil preservation or any other geologic time topic.
  • Have limited time for studying
  • Want a cost effective way to supplement their science learning
  • Prefer learning science visually
  • Find themselves failing or close to failing their geologic time unit
  • Cope with ADD or ADHD
  • Want to get ahead in high school biology
  • Don't have access to their science teacher outside of class

Why it works:

  • Engaging Tutors: We make learning about geologic time simple and fun.
  • Cost Efficient: For less than 20% of the cost of a private tutor, you'll have unlimited access 24/7.
  • Consistent High Quality: Unlike a live biology tutor, these video lessons are thoroughly reviewed.
  • Convenient: Imagine a tutor as portable as your laptop, tablet or smartphone. Learn about geologic time on the go!
  • Learn at Your Pace: You can pause and rewatch lessons as often as you'd like, until you master the material.

Learning Objectives

  • Learn about the major eons, eras, periods and epochs of the geologic time scale.
  • Compare and contrast catastrophism and uniformitarianism as theories of geological evolution.
  • Understand the differences between numerical and relative dating.
  • Discuss the different methods by which relative dates are established.
  • Explain the methods used in radiometric dating and understand how radioactive decay is used to establish numerical age.
  • Describe the conditions necessary for fossil preservation.
  • Learn how fossils can be used in relative dating.

9 Lessons in Chapter 20: Geologic Time: Tutoring Solution
Test your knowledge with a 30-question chapter practice test
Geologic Time Scale: Major Eons, Eras, Periods and Epochs

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.

Theories of Geological Evolution: Catastrophism vs Uniformitarianism

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.

Methods of Geological Dating: Numerical and Relative Dating

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.

What is Relative Dating? - Law of Superposition, Principles of Original Horizontality & Cross-Cutting Relationships

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!

Principles of Radiometric Dating

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.

Radiometric Dating: Methods, Uses & the Significance of Half-Life

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.

Conditions of Fossil Preservation: Rapid Burial, Hard Parts & the Elements

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!

Relative Dating with Fossils: Index Fossils as Indicators of Time

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.

What is Radioactive Dating? - Definition & Facts

9. What is Radioactive Dating? - Definition & Facts

Discover how scientists determine the age of fossils, rocks, and other geologic phenomena by using the known half-lives of isotopes within each specimen, a technique known as radioactive dating.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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