the earths structure

The crust:

·   Continental crust

•  Thick (10 – 70km)
•  Buoyant (less dense than oceanic crust)
•  Mostly old rock
•  Mostly granitic rock

·   Oceanic crust

•  Thin (7km)
•  Dense
•  Younger
•  Mostly basaltic rock

Lithosphere:

•  The zone on the outer part of earth.
•  Made up of crust and mantle
•  The zone is brittle and much more solid than the underlying ductile and…