Thin outermost layer of the earth Made up of 2 layers of rocks found in the continental crust: the top layer called GRANITE LAYER and the bottom layer called BASALT LAYER. Mohorovicic Discontinuity- (moho/M.discontinuity)- boundary bet. The crust and mantle
Layer below the crust Thicker and denser Mostly made up of dense rocks and is extremely hot Guttenburg Discontinuity- boundary bet. Mantle and core
Made up of liquid iron and nickel Temperature ranges from about 2200 0C – 2400 0C
Solid, innermost layer of the earth Temperature reaches to about 2500 0C Presence of dense iron may help explain the existence of the magnetic field around the earth
Formed from sediments deposited on the ocean bottom.
Formed from sedimentary and igneous rocks that were subjected to high pressure and temperature. Weathering – breaking down of rocks
Diastrophism - movement of the solid part of the earth FAULT – a crack or fracture in the crust of the earth FOLDS – are bends in rock layers Mountains are formed due to the upward movement of molten rocks eventually form as volcanoes.
Alfred wegener – introduced the idea of Pangea as super continent