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Ch 49: General Science: Earth's Structure & Processes

About This Chapter

The state of Arizona now uses the NES General Science exam in place of the AEPA General Science test. This chapter will help you prepare for questions on the NES General Science exam about the forces that shape the Earth, the four spheres of Earth and the internal layers of Earth.

AEPA General Science: Earth's Structure & Processes - Chapter Summary

Follow along with our instructors in this series of short lesson videos to review different structures of Earth as well as the internal and external forces that shape Earth's surface. After these lesson videos you should be prepared for questions on the National Evaluation Series (NES) General Science exam about:

  • Internal and external forces that shape Earth
  • Geosphere, hydrosphere, biosphere and atmosphere
  • Crust, mantle and core
  • Studies of Earth's interior structure

If you feel you would benefit from an alternative review of the lessons, read the lesson transcripts that present written overviews of the lessons. Also don't forget to test your understanding of the information presented by taking the lesson quizzes. After the lesson quizzes, use the video tags to go to the locations of the lessons that discuss your areas of weakness and fortify your mastery over them.

5 Lessons in Chapter 49: General Science: Earth's Structure & Processes
Test your knowledge with a 30-question chapter practice test
The Dynamic Earth: Internal & External Forces that Shape Earth's Surface

1. The Dynamic Earth: Internal & External Forces that Shape Earth's Surface

There are many geologic processes that shape the surface of the Earth. Not only do they build and destroy a variety of landscapes, but they also give us clues to the interior of the Earth and the forces that exist there.

The Four Spheres of Earth: Geosphere, Hydrosphere, Biosphere, and Atmosphere

2. The Four Spheres of Earth: Geosphere, Hydrosphere, Biosphere, and Atmosphere

Earth is made up of four distinct yet connect spheres. In this video lesson, you will learn about where each sphere is found on Earth, as well as some features commonly found in each.

Interactions of Earth's Spheres: Purpose and Examples

3. Interactions of Earth's Spheres: Purpose and Examples

The four spheres of Earth drive all of its processes and support life on our unique planet. In this video lesson, you will see examples of how Earth's spheres interact with each other to form an overall complex and connected system.

Earth's Internal Layers: Crust, Mantle & Core

4. Earth's Internal Layers: Crust, Mantle & Core

Earth is made up of several different layers, each with unique properties. In this video lesson, you will identify each layer of Earth and how it relates to Earth as a whole.

How Scientists Study Earth's Interior Structure

5. How Scientists Study Earth's Interior Structure

We can't see what Earth's interior is made of, but scientists are able to study it in other ways. In this video lesson, you will learn how seismic activity helps us understand and describe the inner layers of the earth.

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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Other Chapters

Other chapters within the AEPA General Science (NT311): Practice & Study Guide course

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