How do Geologists learn About Earths interior
The geologist They study rock and seismic waves actually anything that's not living.
So they used rocks to help them now the earth's interior.
1.Granite is a type of rock that is light colored.
2. basalt is a fine ingenious rock.
3. seismic waves tells you earths speed.
4. lithosphere is a layer made out of mantel.
5. a soft layer of mantel.