Ch 4: Earth Science Overview

About This Chapter

The objective of this chapter is to provide you with a review of what Earth science is, the spheres of the Earth, the internal layers of the earth, plate tectonics, topography and the Earth's waters.

Earth Science Overview - Chapter Summary

Our expert instructors have composed these lessons to provide you with a quick review of the different topics of Earth science. Our instructors will discuss the different parts and natural events of the Earth. From these lessons, you should gain a better understanding of:

  • Earth science and the study of geology, astronomy, meteorology and oceanography
  • Studies of the geosphere, hydrosphere, biosphere, atmosphere and interactions between them
  • How the Earth's atmosphere circulates and affects climates around the world
  • The crust, mantle and core of the Earth
  • Plate tectonics and plate boundaries
  • What topography is and the different ways it's shaped
  • Effects that natural events have on the habitats of wildlife and people
  • Properties of Earth's waters and theories about the formation of the oceans

Read the lesson transcripts to reinforce your retention of the information presented in them and study the vocabulary of the chapter. Use your mobile device to study whenever and wherever it's convenient. Ask questions of the experts by using the dashboard feature.

10 Lessons in Chapter 4: Earth Science Overview
Test your knowledge with a 30-question chapter practice test
What is Earth Science?

1. What is Earth Science?

Earth science is a field that includes geology, astronomy, meteorology, and oceanography. Scientists do research in these fields to discover past and future events. Learn about the dynamic field of earth science and how it affects our lives in this lesson.

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.

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

5. 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.

Plate Boundaries: Convergent, Divergent, and Transform Boundaries

6. 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.

What Is Topography and How Is Topography Reshaped?

7. What Is Topography and How Is Topography Reshaped?

The topography, or surface of the Earth, is constantly changing shape due to many powerful forces. In this lesson, we will learn about some of the amazing changes that occur on Earth due to the processes of weathering, erosion, and deposition.

How Natural Events Change Habitats

8. How Natural Events Change Habitats

Natural events, like earthquakes, volcanic eruptions, landslides and floods, can be very powerful and destructive. In this lesson, we will see firsthand how they can change human and wildlife habitats in both damaging and helpful ways.

Theories About How Oceans Were Formed

9. Theories About How Oceans Were Formed

Today, more than 2/3 of Earth is covered with water, mostly in our oceans. But Earth itself is much older than our oceans. In this lesson you'll explore theories on how our oceans formed, as well as why liquid water remains on Earth even after all this time.

What Are the Properties of Water? - Unique Properties that Support Life on Earth

10. What Are the Properties of Water? - Unique Properties that Support Life on Earth

In this video lesson you will learn about water and its unique properties. You will also develop an understanding of how these properties make life as we know it possible.

Chapter Practice Exam
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Practice Final Exam
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