About This Chapter
How it works:
- Identify the lessons in the Holt McDougal Plate Tectonics chapter with which you need help.
- Find the corresponding video lessons with this companion course chapter.
- Watch fun videos that cover the plate tectonics topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.
Students will learn about:
- Internal layers in the Earth
- Scientific methods for studying internal structure of the earth
- Theoretical explanations for Pangaea
- Wegener's continental drift theory
- Proof of continental drift
- Plate tectonic theories
- Convergent, divergent and transform boundaries of plates
- Causes of tectonic plate movement
- Types and causes of rock deformation
- Causes and types of geological folds
- Geological faults
- Processes of mountain building
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1. 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.
2. 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.
3. What is Pangaea? - Theory & Definition
The continents you know have existed for a long time, but not in their current locations. In fact, over 200 million years ago Pangaea broke apart by plate tectonic movement to form the continents we see today.
4. Alfred Wegener's Theory of Continental Drift
People used to think that Earth was static, and that it never changed. Gradually, a body of evidence was gathered that made no sense in this model. Alfred Wegener, Geologic Supersleuth, laid the groundwork for a whole new theory for the large-scale changing nature of the earth.
5. Evidence for the Mechanism of Continental Drift
As scientists began to explore the ocean floor after World War II, they discovered many new clues to help them solve a mystery that had begun decades earlier - how the continents moved about on the surface of the earth.
6. 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.
7. 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.
8. 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.
9. Rock Deformation: Causes and Types
In this video lesson, you will learn about how rock can be deformed from stress and the effect this has on the rock. You will identify different types of deformation based on the composition of the rock as well as external stress factors.
10. Geological Folds: Definition, Causes & Types
Under the right conditions and over millions of years, rock can be deformed so that it is folded into a different shape. In this video lesson, you will identify different types of folds as well as what causes them to occur in rock.
11. Geological Faults: Definition, Causes & Types
In this video lesson, you will identify different faults and the types of stress that cause them. You will also see examples of the effects these faults have on the landscape.
12. 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.
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Other chapters within the Holt McDougal Earth Science: Online Textbook Help course
- Holt McDougal Earth Science Chapter 1 - The World of Earth Science
- Holt McDougal Earth Science Chapter 2 - Maps as Models of the Earth
- Holt McDougal Earth Science Chapter 3 - Minerals of the Earth's Crust
- Holt McDougal Earth Science Chapter 4 - Rocks: Mineral Mixtures
- Holt McDougal Earth Science Chapter 5 - Energy Resources
- Holt McDougal Earth Science Chapter 6 - The Rock and Fossil Record
- Holt McDougal Earth Science Chapter 8 - Earthquakes
- Holt McDougal Earth Science Chapter 9 - Volcanoes
- Holt McDougal Earth Science Chapter 10 - Weathering and Soil Formation
- Holt McDougal Earth Science Chapter 11 - The Flow of Fresh Water
- Holt McDougal Earth Science Chapter 12 - Agents of Erosion and Deposition
- Holt McDougal Earth Science Chapter 13 - Exploring the Oceans
- Holt McDougal Earth Science Chapter 14 - The Movement of Ocean Water
- Holt McDougal Earth Science Chapter 15 - The Atmosphere
- Holt McDougal Earth Science Chapter 16 - Understanding Weather
- Holt McDougal Earth Science Chapter 17 - Climate
- Holt McDougal Earth Science Chapter 18 - Studying Space
- Holt McDougal Earth Science Chapter 19 - Stars, Galaxies, and the Universe
- Holt McDougal Earth Science Chapter 20 - Formation of the Solar System
- Holt McDougal Earth Science Chapter 21 - A Family of Planets
- Holt McDougal Earth Science Chapter 22 - Exploring Space