NCERT Solutions for Class 7 Geography Chapter 3 – Our Changing Earth
1. Answer the following questions.
(i) Why do the plates move?
Answer – Plates on the surface of the earth move because of the intense heat produced by the Earth’s core. This heat causes convection cells in the mantle which in turn heats up the SIAL and SIMA layers. To distribute the heat and pressure evenly the plates on the surface move in a convergent and divergent manner.