Our Changing Earth

 INTRODUCTION The outer part of the earth formed by the crust and the upper mantle is called the Lithosphere. It comprises several plates known as lithospheric plates. The plates move by a few millimetres every year because of the circular movement of molten magma inside the earth. When lithospheric plates move, it causes changes on the earth's surface and results in various landforms. The lithospheric plates are irregular and rigid.  Forces Causing Earth Movement: The earth's movements are determined by the forces causing them. These forces are of two types: endogenic forces and exogenic forces.  Endogenic forces are forces that act on the interiors of the earth.  Endogenous forces are divided into sudden forces and catastrophic forces. Sudden forces are the result of earthquakes, volcanoes, and landslides. The sudden force caused widespread destruction. Disastrous forces are the cause of the formation of mountains. The disastrous force is slow. Exogenic forces are ...