My Sansar

ATMOSPHERE 1.      Introduction to Atmosphere The surface of the earth is surrounded by a blanket of air and this gaseous sphere surrounding or hanging over the surface of the earth is called the atmosphere . Earth's atmosphere, the blanket of gases surrou… Read more

Rock Major types of rocks Rocks forming the crust of the earth differ in mineral composition, colour, texture and other physical properties. Rocks are classified into three major types on the basis of their origin. These three types are (i) Igneous rocks (ii) Se… Read more

Volcanoes A volcano is a narrow opening in the earth's crust through which magma and other materials erupt from the interior of the earth. The temperature at a depth at a depth of a few kilometers would be above the melting point of rocks but high pressure mak… Read more