THE NATURE OF THE EARTH'S INTERIOR

The earth is divided into three chemical layers: the core, the mantle and the crust. The core is divided into two layers: a solid inner core and a liquid outer core. Within the mantle lie two subdivisions, upper and lower mantle. There are two types of crust, oceanic and continental.

Evidence For Movement and Changes In the Geosphere Over Time

     The geosphere is the solid earth that includes continental and oceanic crust as well as the various layers of the earth's enterior. The geosphere is not static, but it's surface (crust) is in a constant state of motion that gives rise to movement of the continents. A changein position relative to a frame of referance.