Question

Why does the thickness of the earth crust vary?

Answer 1

Answer:

The continental crust is thicker, and the oceanic crust is thinner. The thickness of the crust varies from 5 to 80 kilometres. The temperature of the crust increases with depth because of geothermal energy....

Answer 2

Answer:

These varying thickness of earth's crust is basically due to continuous disturbances occurring beneath the earth crust. Our earth is consists of three layers, i.e., 1)Crust 2)mantle 3)core. ... So, due to molten core the inner layer of mantle also get heat up and become molten too and start moving towards the surface.