Earth’s Internal Structure: Crust, Mantle, Core Layers Explained #163921 (License: Personal Use)

This educational illustration depicts a longitudinal cross-section of Earth, revealing its four primary layers: the thin silicate crust, the thick rocky mantle, the liquid iron-nickel outer core, and the solid iron-nickel inner core. The outer surface shows continents and oceans for geographic context, while color-coding emphasizes compositional and physical state differences-critical for understanding plate tectonics and geomagnetism.

Used in earth science education, geology textbooks, museum exhibits, and online learning platforms to explain planetary structure; matches user intent for academic study, curriculum support, or科普 curiosity about how Earth works internally.