1. Composition of the Earth’s Layers

2. Crust Solid: Minerals and rocks (igneous, sedimentary, metamorphic)
Thickness: ~ 8 – 50 km

3. Mantle Solid (mostly); similar to stony meteorites
Thickness: ~ 2,900 km

4. Core
Outer is liquid; inner is solid; composition similar to iron meteorites
Thickness: Outer ~2,300km Inner ~1,200km

5. Definitions (add to the left side of your notebook)
Crust – Earth’s outermost layer, made of solid rock.
Mantle – The layer below the crust and above the core. It is made of solid rock that is somewhat different in composition than the crust.
Core – Earth’s innermost division, made of mostly metals, especially iron and nickel.