Inner Core of the Earth, Composition, Characteristics & Facts - Lesson

Structure of the Earth! - National Geographic Kids

Core of the Earth, Composition, Temperature & Facts - Lesson

Scientists believe Earth might be hiding a fifth layer to its geologic makeup

Earth's Inner Layers

Research reveals 'fundamental finding' about Earth's outer core - Florida State University News

Core - 8TH-GRADE SCIENCE

3.1 Earth's Layers: Crust, Mantle, and Core – Physical Geology, First University of Saskatchewan Edition

Up-to-fivefold reverberating waves through the Earth's center and distinctly anisotropic innermost inner core

Asthenosphere, Definition, Density & Temperature - Lesson

Structure of the Earth

Layers of the Earth for Kids Learn Important Terms and Concepts

Earth's Interior National Geographic