Part of GED® Science: Earth & Space Science
GED® Science: Plate Tectonics & Earth's Changing Surface (Deep Dive)
A deep dive into the theory that reshaped Earth science, expanding the single 'Plate Tectonics & Earth's Changing Surface' lesson from the GED® Earth & Space Science course into a full mini-course. You'll follow the real detective story: Wegener's idea that the continents once fit together, why scientists rejected it, and how the discovery of seafloor spreading and magnetic stripes finally revealed the engine driving the plates. From there you'll master the three kinds of plate boundaries and the mountains, volcanoes, earthquakes, and island chains they build. Plain language, all-new labeled diagrams, common-misconception warnings, and GED®-style practice with full explanations throughout.
📚 Course Curriculum
Look at a world map. Doesn't the bulge of South America seem to fit into the curve of West Africa, like two puzzle pieces? In …
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Wegener's missing piece was a force big enough to move continents. The answer is heat — the same internal heat (from Earth's formation and from …
Open trial session →In the 1960s, geologist Harry Hess studied the ocean floor and proposed seafloor spreading. At long undersea mountain ranges called mid-ocean ridges, magma rises from …
Open trial session →Earth's surface is broken into about a dozen major plates, each a slab of rigid lithosphere (crust + the rigid top of the mantle). Almost …
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Plate boundaries don't just move the continents around — they build the landscape and drive Earth's biggest hazards. Once you know the boundary, you can …
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There's one famous exception to 'everything happens at boundaries': hotspots. A hotspot is a plume of unusually hot mantle rising in the middle of a …
Open trial session →Course Syllabus
This self-paced GED® Science course follows a 6-lesson sequence. Work through the modules in order so that each skill supports the next.
Course sequence
Module 1 - Lessons 1-3
- Continental Drift: Wegener's Big Idea
- The Engine: Mantle Convection
- Seafloor Spreading: The Proof
Module 2 - Lessons 4-6
- The Three Plate Boundaries
- Mountains, Volcanoes, Earthquakes & the Ring of Fire
- Hotspots, the Pace of Change & Reading Tectonic Data
Practice and completion
- Use worked examples and lesson practice to check understanding after each module.
- Review incorrect answers, explain the correction, and repeat weak skills.
- Complete the available mixed or final course practice to demonstrate readiness.
Course Outcomes
By the end of this course, learners will be able to:
- Explain the key scientific ideas and vocabulary in Continental Drift: Wegener's Big Idea.
- Interpret observations, data, models, or evidence related to The Engine: Mantle Convection.
- Apply scientific reasoning to questions involving Seafloor Spreading: The Proof.
- Evaluate explanations and identify common errors about Mountains, Volcanoes, Earthquakes & the Ring of Fire.
- Connect Hotspots, the Pace of Change & Reading Tectonic Data with other course concepts in mixed practice.
- Use feedback and answer explanations to diagnose and correct mistakes.
- Complete mixed, exam-style practice with clearer reasoning and greater independence.
📝 Practice Questions
29 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.