Major Landforms of the Earth — Social Studies STD 6 — Question

The ground that you are standing on is slowly moving. Within the earth a continuous movement is taking palace. The Earth?s crust is made up of huge slabs called tectonic plates, which fit together like a jigsaw puzzle. Internal movement below the earth?s surface cause collision of these plates against each other. Landforms like mountains, faults, valleys and volcanoes are formed this way. Earthquakes also occur due to these movements.

External forces include running water moving air, waves and tides at sea, and movement of frozen ice or glaciers There is a continuous process of wearing down by erosion and rebuilding by deposition due to the action of these forces. Plateaus , plains, hills and sand dunes are formed this way.