The Earth S Interior

The very thin brittle crust the mantle and the core.

The earth s interior. It is an almost impossible distance for the humans to reach till the centre of the earth the earth s radius is 6 370 km. It is not possible to know about the earth s interior by direct observations because of the huge size and the changing nature of its interior composition. The planet earth is made up of three main shells.

The interior of the earth is not simply layered. The hard brittlecrustextends from earth s surface to the so called mohorovicic discontinuity nicknamed the moho. The boundaries between layers are rough and irregular.

Some of the layers particularly the crust and lithosphere are highly variable in thickness. Scientists divide the mantle into the upper and lower mantle. Oceanic crust mostly basalt.

All parts are drawn to scale on the cover of this publication and a table at the end lists the thicknesses of the parts. Continental crust igneous metamorphic and sedimentary rocks. Three major layers inside the earth interior are the crust mantle and the core.

The crust silicate rocks primarily granite and basalt. The core is divided into a liquid outer core and a solid inner core. The crust the mantle and the core as shown in the diagram of the earths interior below.

The mantle and core are each divided into two parts. Earth s interior is generally divided into three major layers. The deepest layer is a solid iron ball about 1 500.