Here's why:
* Continental Crust: Continents are made up of continental crust, which is thicker and less dense than oceanic crust.
* Granitic Composition: Continental crust is primarily composed of granite, a light-colored, coarse-grained igneous rock.
* Formation: Granite forms deep within the Earth's crust through the slow cooling and crystallization of magma. This process is often associated with plate tectonics and the collision of continental plates.
While granite is the dominant rock type, other rocks like sedimentary and metamorphic rocks also contribute to the composition of continents. However, granite forms the foundation and bulk of the continental crust.
