Part of GED® Science: Earth & Space Science

GED® Science: Earth's Structure & Layers (Deep Dive)

A deep dive into the inside of our planet, expanding the single 'Earth's Structure & Layers' lesson from the GED® Earth & Space Science course into a full mini-course. You will learn why Earth is layered at all, what each layer is made of and how hot and deep it is, the difference between dividing Earth by composition (crust/mantle/core) and by behavior (lithosphere/asthenosphere), how scientists know all this without ever drilling there (seismic waves), and how Earth's churning metal core makes the magnetic field that shields life. Plain language, labeled diagrams, common-misconception warnings, and GED®-style practice with full explanations throughout.