About This Chapter
Basic Geology - Chapter Summary
This chapter provides a thorough overview of basic geology concepts. Work through these fun video lessons at your own pace to review the geologic time scale, fossil records and important geological features. You'll also examine the major rock groups and the characteristics of minerals. When you're finished working through this chapter, you should be able to:
- Identify the major eons, eras, periods and epochs of the geologic time scale
- Define geologic and fossil records
- List geological features
- Differentiate between rocks and minerals
- Compare the three major types of rocks
Each lesson comes with a short quiz, and the chapter concludes with a comprehensive multiple-choice exam. If you have any questions along the way, don't hesitate to reach out to our science experts online. The chapter's resources can be accessed on any computer or mobile device, and you also have the option of printing out the lesson transcripts.
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. The Geologic Record: Definition & Timeline
Have you ever wondered how our Earth is subdivided, time-wise? The geologic record has four eons that help divide important parts of our Earth's history, and this lesson goes over them.
3. Fossil Record: Definition & Examples
This lesson teaches you about the fossil record. It explains how scientists learn about Earth's distant past and highlights what fossils can tell scientists about ourselves and other organisms.
4. Geological Features: Definition & List
We find geological features all over Earth. They come in different shapes, sizes, and forms, and in this lesson you'll learn what they are and identify the characteristics of a few different types.
5. Rocks and Minerals: Definitions and Differences
Can you tell the difference between a rock and a mineral? What makes a mineral so much different from a rock? Explore these questions in depth, and learn how we classify rocks and minerals.
6. Types of Rocks: The Three Major Rock Groups
Did you know that lava is molten rock that reaches the earth's surface? Furthermore, did you know that rocks exist in three general forms: igneous, sedimentary and metamorphic? This lesson describes these rock types and examples of each.
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