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Ch 17: TASC Science: Radiometric Dating

About This Chapter

Use these short, engaging videos to learn about the methods and the science of radiometric dating as you prepare for the TASC Science assessment. Let our instructors know if you have any questions about the concepts or techniques illustrated in the videos.

TASC Science: Radiometric Dating - Chapter Summary

This chapter is designed to help you master radiometric dating science before taking the TASC Science exam. Our fun, short videos provide thorough examinations of the following topics:

  • Numerical and relative geological dating methods
  • Relative dating and the law of superposition
  • Original horizontality principles and cross-cutting relationships
  • Radiometric dating principles
  • The science and significance of radioactive half-life

The lesson quizzes give you the chance to test yourself on the methods and principles of radiometric dating. If you have any questions about any of the techniques or ideas, don't be shy about asking our instructors for help.

Objectives of the TASC Science: Radiometric Dating Chapter

The TASC Science assessment is a 85-minute exam that can be computer administered or taken on paper. The exam is divided into three separate domains that test your knowledge of physical sciences, life sciences, and earth and space sciences.

This chapter is designed to help you master the radiometric dating science and methods you'll likely need to know for the physical science portion of the exam; the physical science subject area makes up 36% of the test questions. Use the lesson quizzes to practice using and analyzing the concepts of radiometric dating and see what TASC Science-style test questions look like.

4 Lessons in Chapter 17: TASC Science: Radiometric Dating
Test your knowledge with a 30-question chapter practice test
Methods of Geological Dating: Numerical and Relative Dating

1. 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

2. 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

3. 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

4. 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.

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

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