4: Planet Earth Last updated Save as PDF Page ID12750 4.10: Video: The Story of the Earth4.1: Introduction to the Planet Earth4.2: Earth as a Planetary Body4.3: Earth’s Motions4.4: Earth’s Surface Features4.5: Defining Rock Types4.6: The Rock Cycle4.7: Igneous Rocks4.8: Sedimentary Rocks4.9: Metamorphic Rock