Ch 27: ASVAB: Geology

About This Chapter

This chapter's lesson lineup addresses a variety of geology subject matter for you to study before you take the ASVAB. You can easily check your grasp of the material by taking the chapter's practice quizzes.

ASVAB: Geology - Chapter Summary

You'll see major geology material presented to you in this chapter through engaging videos and text lessons. The following ASVAB prep topics are thoroughly covered by our professional instructors:

  • The rock cycle and different types of rocks
  • Earth's internal and external forces, tectonic plates and plate boundaries
  • Volcanoes, mountain-building processes and earthquakes
  • The causes of tectonic plate movement
  • Minerals and how they're different from rocks
  • Earth's internal layers
  • Types of mechanical weathering
  • Seafloor spreading and polar reversal

Each of this chapter's lively, animated videos highlights one of the above topics. Study the short video lessons for a fun and efficient approach to increase your understanding. Experts can answer your questions when you submit them interactively.

Objectives of the ASVAB: Geology Chapter

The goal of the ASVAB is to determine whether the examinee is suited for military enlistment based on knowledge across multiple subject domains. What you learn in this chapter about geology will be helpful for the ASVAB General Science (GS) subtest items. The GS subtest accounts for about 11% of the exam's questions overall on the computer format as well as the paper version. The computer-based test includes 16 questions and has an 8-minute time limit while the paper-based test features 25 questions that should be completed in 11 minutes.

14 Lessons in Chapter 27: ASVAB: Geology
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.

Earth's Internal Layers: Crust, Mantle & Core

2. 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.

Earthquakes and Volcanoes: Evidence of Earth's Inner Layers

3. Earthquakes and Volcanoes: Evidence of Earth's Inner Layers

The interior layers of the earth are not able to be observed directly, so scientists need to rely on other information to learn about it. S waves, P waves, and magma from volcanoes and earthquakes give a glimpse at the layers of the earth by providing data that can be built into a model of the earth.

The Processes of Mountain Building

4. The Processes of Mountain Building

In this video lesson, you will learn about the process of mountain building. You will identify different ways that mountains form, as well as the different types of mountains that result from this process.

Mechanical Weathering: Definition, Process, Types & Examples

5. Mechanical Weathering: Definition, Process, Types & Examples

Over time, the forces of the natural environment cause rocks to physically break down in a process called mechanical weathering. Learn how factors, such as wind, water and temperature fluctuations lead to mechanical weathering.

Sea Floor Spreading and Polar Reversal

6. Sea Floor Spreading and Polar Reversal

Sea floor spreading is the process by which new oceanic crust is formed by the upwelling of magma through diverging tectonic plates. Learn about the relationship between sea floor spreading and polar reversals detected on the ocean floor.

Plate Tectonics: A Unified Theory for Change of the Earth's Surface

7. Plate Tectonics: A Unified Theory for Change of the Earth's Surface

After many years of trying to solve the mystery of the moving continents, enough data and evidence was collected to develop a unifying theory of how the surface of the earth changes. It's called plate tectonics.

Major Plates of the Lithosphere: Earth's Tectonic Plates

8. Major Plates of the Lithosphere: Earth's Tectonic Plates

The outer shell of the earth, the lithosphere, is broken up into tectonic plates. The seven major plates are the African plate, Antarctic plate, Eurasian plate, Indo-Australian plate, North American plate, Pacific plate and South American plate.

Plate Boundaries: Convergent, Divergent, and Transform Boundaries

9. Plate Boundaries: Convergent, Divergent, and Transform Boundaries

In the theory of plate tectonics, the earth's crust is broken into plates that move around relative to each other. As a result of this movement, three types of plate boundaries are formed: divergent, convergent, and transform boundaries.

Causes of Tectonic Plate Movement

10. Causes of Tectonic Plate Movement

In this lesson, we explore the causes of plate movement, including thermal convection, ridge push and slab pull. Students will learn how these processes complement each other and form a theory for tectonic plate movement.

What Are Minerals? - Types, Properties & Examples

11. What Are Minerals? - Types, Properties & Examples

In this lesson, you will learn about minerals and their properties. You will also understand the importance and everyday use of different types of minerals found on Earth.

Rocks and Minerals: Definitions and Differences

12. 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.

Rock Cycle: Igneous, Sedimentary, and Metamorphic Rocks

13. Rock Cycle: Igneous, Sedimentary, and Metamorphic Rocks

In this lesson, we will discuss the three main types of rocks and how they are formed. The lesson also gives an introduction into how matter locked in rocks can be cycled through the earth.

Types of Rocks: The Three Major Rock Groups

14. 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.

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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