Question

shortly explain your thinking what you think earths crust looks like

Answer 1

I picture Earth’s crust as a thin, fractured outer shell that varies a lot: thick, buoyant continental crust (~20–70 km, mostly granitic, lighter) and thin, dense oceanic crust (~5–10 km, mostly basaltic). It’s covered by sediments, soils, mountains and ocean basins and broken into tectonic plates that move, collide, pull apart and slide past each other. Seismology and rock samples tell us the crust is brittle and sits on the hotter, more ductile upper mantle (the asthenosphere); together with the uppermost mantle it forms the rigid lithosphere. Overall it’s a relatively thin, uneven skin — only a small fraction of Earth’s radius — whose structure we infer from earthquakes, drilling and geophysical imaging.