Ch 22: Earth History

About This Chapter

Watch online video lessons, and learn about the different aspects of the history of the Earth. These engaging lessons are just a portion of our online study guide and video collection.

Earth History - Chapter Summary and Learning Objectives

Most of us have heard of the Big Bang theory. Not the television show. The theory about how the earth formed. Well, this is not the only theory out there. There are actually several theories, which we will look at in this chapter. Along with the study of the theories on how the earth formed, we will also cover the formation of galaxies and the moon. You'll watch video lessons that cover the sun's life cycle and a timeline of the major eras on Earth. Some of the specific things you will learn as you watch these lessons include:

  • Background radiation as evidence for the Big Bang
  • Irregular galaxy formation
  • The Solar Nebular hypothesis
  • Layers of the sun
  • Stage in the sun's life cycle
  • The characteristics of the Earth's major eras

Origins of The Universe: The Big Bang and Expanding & Contracting Universes Discover the Big Bang theory.
Evidence for the Big Bang Theory: Background Radiation, Red-Shift and Expansion Take a look at the evidence supporting the Big Bang theory, like background radiation, red-shift and expansion.
Galaxy Formation: Spiral, Elliptical & Irregular Galaxies Examine the formation of elliptical, spiral and irregular galaxies.
Formation of the Earth: Theories Study theories about the formation of the Earth and how the Earth formed its different layers.
Formation of the Moon: Theories Analyze the different theories on the formation of the moon.
Structure of the Sun Find out about the layers of the sun and how fusion keeps the sun stable.
Stages of the Sun's Life Cycle Learn about the life cycle of the sun.
The History of Life on Earth: Timeline and Characteristics of Major Eras Explore the major eras in the history of the Earth and describe their major characteristics.

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.
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