Earth's Movements and Major Landforms

How are the major landforms like mountains, rivers, deserts, islands and volcanoes created.? What are the internal forces inside the earth that bring about change over hundreds of thousands or millions of years. This video, based on the CBSE curriculum for 7th Standard or 7th Grade, explains how endogenic forces inside the earth cause earthquakes, landslides and volcanic eruptions to shape the external landforms we see today. It explains how the earth has moved from a single continent called Pangaea to form 7 continents. The Theory of Plate Tectonics, The Theory of Continental Drift and the theories that Alfred Wegener, the German Meteorologist propounded have now been proven. It explains what oceanic and continental plates are and how fold mountains or trenches are formed by the convergence or divergence of tectonic plates. It explains how volcanoes erupt and how earthquakes are caused