Science 8 Quarter 3 Week 8 Day 4 - Recap Lesson and Long Quiz

Oceanic crust is thin, dense, and basaltic, forming the ocean floor, while continental crust is thick, less dense, and granitic, making up the land masses; these differences in density and composition drive plate tectonics, with denser oceanic crust typically subducting beneath continental crust. Continental crust is much older and varied, while oceanic crust is constantly renewed at mid-ocean ridges

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