About This Chapter
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
|The Dynamic Earth: Internal and External Forces that Shape the Earth Surface||Understand the evidence of the earth's internal and external forces that shape its surface|
|The Four Spheres of Earth: Geosphere, Hydrosphere, Biosphere, and Atmosphere||Describe each of Earth's four spheres. List several examples of features in each sphere|
|Interactions of Earth's Spheres: Purpose and Examples||Describe 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 Core||List 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 Layers||Describe 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 Structure||Identify several ways in which scientists can study Earth's interior indirectly or remotely|
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.
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.
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.
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.
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.
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Other chapters within the Earth Science 101: Earth Science course
- Earth Science Basics
- Geologic Time
- Characteristics of Matter
- Plate Tectonics
- Minerals and Rocks
- Igneous Rocks
- Volcanic Landforms
- Weathering and Erosion
- Sedimentary Rocks: A Deeper Look
- Metamorphic Rocks: A Deeper Look
- Rock Deformation and Mountain Building
- Water Balance on Earth
- Running Water
- Ground Water
- Coastal Hazards
- Earth's Atmosphere
- Weather, Air Masses & Storms
- Earth History
- Energy Resources
- Studying for Earth Science 101