Exploring Earth's Layers

Front

Earth's Layers

Back

Crust, Mantle, Outer Core, Inner Core

Front

Crust

Back

Earth's outermost layer

Front

Mantle

Back

Layer beneath the crust

Front

Outer Core

Back

Liquid layer of iron and nickel

Front

Inner Core

Back

the innermost layer of the Earth, composed mostly of iron and nickel and solid

Front

Lithosphere

Back

Crust + upper mantle

Front

Asthenosphere

Back

Semi-fluid mantle layer

Front

Continental Crust

Back

The part of the crust that is thicker, less dense

Front

Oceanic Crust

Back

The part of the crust that is thinner, more dense

Front

Crust Thickness

Back

5-70 km