Question

Convection currents and movement of tectonic plates

Answer 1

The convection currents present below the solid layers of Earth's crust split the crust or the lithosphere into a number of large fragments. These fragments are called tectonic or lithospheric plates. Earth scientist believe that according to the 'Theory of plate tectonics' the crust of the Earth has been formed out of seven major and some minor plates. The movement of the plates results in the building up of the stresses within the plates and the continental rocks above, leading to folding, faulting and volcanic activity.
Broadly, these plate movements are classified into three types:
1. Divergent Boundary
2. Convergent Boundary
3. Transform Boundary

Answer 2

Answer:

Plates are dragged along as the hot magma in the asthenosphere rises up and then flows under the plates, creating convection currents. As the liquid rock flows, the friction between it and the tectonic plates above may to enough to move them