Earth's Interior

SOL 5.7 (d)

Understanding the Standard

Scientific evidence indicates that Earth is composed of four concentric layers: crust, mantle, outercore, and inner core

Each with its own distinct characteristics. The outer two layers are composed primarily of rocky material. The innermost layers are composed mostly of iron and nickel. Pressure and temperature increase with depth beneath the surface.

Essential Knowledge, Skills, and Process

Describe the structure of Earth in terms of its major layers: crust, mantle, and outer core and inner core

And how Earth’s interior affects the surface

Earths Layers

Layers of the Earth