Isostatic rebound :- This rise of a part of the crust is due to an isostatic adjustment. A large mass, such as an ice sheet/glacier, depresses the crust of the Earth and displaces the mantle below. The depression is about a third the thickness of the ice sheet. After the glacier melts the mantle begins to flow back to its original position pushing the crust back to its original position. This p...

Glacier :- A glacier is·a large, slow-moving river of ice, formed from compacted layers of snow, that slowly deforms and flows in response to gravity and high pressure. The processes and land forms caused by glaciers and related to them are glacial (adjective); this term should not be confounded with glacial (noun), a cold period in ice ages. The process of glacier growth and establishment i...

SOIL :- Plants are the means of life, for they are the sources of food for man and all other animals. The soil in which they grow is therefore an important factor in the production of all forms of life. Soil is the loose material which forms the upper layer of the Mantle Rock (i.e. the layers of loose fragments which cover most of the earth's land area). It consists mainly of very small part...

A study of land forms is important for understanding their influence upon man's life. It includes the description of the characteristics of various forms of land surface. There are three major land forms - mountains, plateaus and plains: Mountains: An uplifted portion of the earth's surface is called a hill or a mountain. In our country, a mountain is differentiated from a hill, when its summit...

VOLCANOES :- A Volcano is a vent or an opening in the earth's crust through which hot materials come forth from deep below the surface. The opening is usually circular in form. Sometimes a volcano has only one opening at the summit, often there are other openings in the sides of the mound. Volcanic eruptions may also take place through a long crack or fissure through which steam and other mater...