Ch 4: Earth's Spheres and Internal Structure

About This Chapter

Watch online video lessons to learn about the Earth's atmosphere, biosphere, geosphere and hydrosphere. Each lesson is accompanied by a short multiple-choice quiz you can use to check your understanding of these topics.

The Earth is much more than a ball of rock orbiting the sun; it's a complicated system of spheres and internal layers that interact with one another. In this chapter, video instructors describe the characteristics of the Earth's four spheres and explain the Earth's internal composition. You'll be introduced to all of the theories that shape our current understanding of this branch of Earth Sciences. At the end of this chapter you should be able to:

  • Explain how the internal and external components of the Earth shape the features on its surface
  • Name the four sphere and understand their characteristics
  • Describe the Earth system
  • Name the components of the Earth's internal layers
  • Describe the physical properties of the internal layers

VideoObjective
The Dynamic Earth: Internal and External Forces that Shape the Earth SurfaceUnderstand the evidence of the earth's internal and external forces that shape its surface
The Four Spheres of Earth: Geosphere, Hydrosphere, Biosphere, and AtmosphereDescribe each of Earth's four spheres. List several examples of features in each sphere
Interactions of Earth's Spheres: Purpose and ExamplesDescribe how Earth's spheres interact to form a complex and continuously changing whole called the Earth system. Provide examples of interactions between two or more spheres
Composition of Earth's Internal Layers: Crust, Mantle and CoreList and briefly describe Earth's internal composition. Discussion will include and illustrate Earth's crust (continental and oceanic), mantle, and core
Physical Properties of Earth's Internal Layers: Lithosphere, Asthenosphere, Lower Mantle, and Core LayersDescribe the physical properties of Earth's internal core including: lithosphere, asthenosphere, lower mantle, outer and inner cores. Explain how the physical layers were determined by using these physical properties of materials such as temperature, density, plasticity, stress tolerance, etc.
How Scientists Study Earth's Interior StructureIdentify several ways in which scientists can study Earth's interior indirectly or remotely

5 Lessons in Chapter 4: Earth's Spheres and Internal Structure
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.
Not Taken

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