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- Study the theory of Pangaea and how continents were formed.
- Explore Alfred Wegener's Theory of Continental Drift.
- Understand ways in which the Earth's surface changes.
- Learn the causes of plate movement.
- Discover how plate boundaries are formed.
- Understand how the study of the ocean floor helps scientists understand how continents have moved.
1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
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.
7. Ocean Drilling as Evidence for Plate Tectonics
The Deep Sea Drilling Project extracted samples of the ocean floor that provided evidence to support the hypothesis of seafloor spreading and the theory of plate tectonics. Learn how these samples provided proof.
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Other chapters within the Middle School Earth Science: Tutoring Solution course
- Earth's Spheres & Structure: Tutoring Solution
- Understanding Earthquakes: Tutoring Solution
- Understanding Volcanoes: Tutoring Solution
- Rock Deformation & Mountain Building: Tutoring Solution
- Shaping the Earth's Surface: Tutoring Solution
- Thermal Energy: Tutoring Solution
- Energy in the Earth System: Tutoring Solution
- Ecology & Ecosystems: Tutoring Solution
- Earth's Energy Resources: Tutoring Solution
- Earth's Material Resources: Tutoring Solution
- Earth Science Investigation & Experimentation: Tutoring Solution