The planet on which we live is called Earth. The globe of earth consists of three layers. The outermost layer is called Earth’s Crust, the layer lying beneath the Earth’s Crust is called Magma. While the inner most layer of the earth is Core. Outer Crust is hard and solid rock, while the Mantle is like a molten plastic. The inner core is also hot and solid. Though the Mantle is molten and a convectional movement occurs all the time. This convectional movement disturbs the outer shell (crust) and makes it cracked. Continue Reading