26.2 Seismic Waves Reveal Earth’s Internal Layers

The Mantle and the Crust

The Mantle and the Crust

Developing Earth Layers

Earth's internal layers differentiated from each other because of their varying densities. Duration: 1:55 (CIS22Aa)

 

For Your Further Consideration:

 

How does the composition of Earth's crust compare to the composition of the whole Earth?