Question

in what way does oceanic crust differ from continental crust​

Answer 1

Both oceanic crust and continental crust are less dense than the mantle, but oceanic crust is denser than continental crust. This is partly why the continents are at a higher elevation than the ocean floor. ... The oceanic crust is formed by partial melting of the mantle at mid-ocean ridges.

Answer 2

Difference Between Oceanic and Continental Crust
The oceanic crust is mainly made out of dark basalt rocks that are rich in minerals and substances like silicon and magnesium. By contrast, the continental crust is made up of light-colored granite rocks full of substances like oxygen and silicon.