Ch 21: Glencoe Earth Science Chapter 22: The Precambrian Earth

About This Chapter

The Precambrian Earth chapter of this Glencoe Earth Science course helps students learn essential earth science lessons about the Precambrian era. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Precambrian Earth textbook chapter.

How it works:

  • Identify the lessons in the Glencoe Earth Science Precambrian Earth chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the Precambrian era topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn about:

  • Formation of the Earth and its atmosphere and oceans
  • Characteristics of major Earth eras
  • Characteristics and types of cyanobacteria
  • Theoretical origins of life on Earth

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5 Lessons in Chapter 21: Glencoe Earth Science Chapter 22: The Precambrian Earth
Test your knowledge with a 30-question chapter practice test
Formation of the Earth: Theories

1. Formation of the Earth: Theories

In this lesson, the theory of how the planet Earth formed will be discussed. This includes looking at how it differentiated into three layers, how it formed its atmosphere, water, and land features, and how it continues to evolve today.

The Atmosphere on Earth

2. The Atmosphere on Earth

This lesson describes the evolution of the Earth's atmosphere, from its ancient past to the present day to how it's being changed by humans today. You'll learn about how outgassing, photosynthesis, and oceans all played a role in its formation, what air is composed of, and the real effect of human pollution on our changing atmosphere.

Cyanobacteria: Definition, Characteristics & Species

3. Cyanobacteria: Definition, Characteristics & Species

Cyanobacteria are a phylum of Bacteria that produce oxygen during photosynthesis. This lesson will examine cyanobacteria and the role they played in establishing our oxygen-rich atmosphere.

The History of Life on Earth: Timeline and Characteristics of Major Eras

4. The History of Life on Earth: Timeline and Characteristics of Major Eras

The Earth is over 4 billion years old. Ever wonder what happened during certain time periods in that large amount of time? We will look at the major eons and eras of Earth's history along with important characteristics of each.

The Origin of Life on Earth: Theories and Explanations

5. The Origin of Life on Earth: Theories and Explanations

Ever wonder how living things came from non-living things? We will explore what conditions on early Earth may have created life from non-living items.

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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