Earth’s Internal Structure Diagram - Layers, Depths, and Composition #163928 (License: Personal Use)

This educational diagram illustrates Earth’s concentric layers: the 0-100 km-thick crust, the mantle extending to 2,900 km, the liquid outer core at 5,100 km depth, and the solid inner core at the center (6,378 km radius). Key regions like the lithosphere (crust + upper mantle) and asthenosphere are highlighted to show tectonic relevance. Depth markers and state indicators (solid/liquid) clarify geophysical properties.

Used in geology textbooks, science classrooms, and educational websites to explain planetary formation, plate tectonics, and seismic wave behavior; matches user intent for learning or teaching Earth science fundamentals.