Earth’s Layers: Crust, Mantle, Outer Core, and Inner Core Help students visualize the internal structure of Earth with this engaging Earth science infographic. This visual learning resource explains the four major layers of Earth, their composition, and their physical properties. Students explore how the crust, mantle, outer core, and inner core differ in structure, temperature, and materials. Perfect for Earth and Space Science lessons, geology units, and STEM classrooms. What Students