4: Planet Earth Last updated Jan 14, 2021 Save as PDF 3.11: Measuring Distant Stars 4.1: Introduction to the Planet Earth Page ID12750 ( \newcommand{\kernel}{\mathrm{null}\,}\) 4.1: 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 Rock4.10: Video- The Story of the Earth