Interior Of The Earth

Constant changes occur inside and outside the earth.

Interior of the earth. 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. Gravity measurements and the earth s mass tell us that the interior of the earth must be denser than the crust because the average density of earth is much higher than the density of the crust.

This gives most important evidences of interior of earth. It is the uppermost layer of the earth and thinnest among all the layers. The boundaries between the layers are marked by abrupt changes in seismic velocity or velocity gradient.

The planet earth is made up of three main shells. Structure of the interior of the earth. The interior of earth can be observed through direct evidence such as rock samples from mining deep ocean drilling project volcanic eruptions and indirect evidence such as seismic waves meteorite investigation gravitation force magnetic field etc.

The very thin brittle crust the mantle and the core. The crust the mantle and the core. The hard brittlecrustextends from earth s surface to the so called mohorovicic discontinuity nicknamed the moho.

The crust is the outermost brittle solid part of earth ranging from 5 70 km. They are a iron fe b magnesium mg c aluminium al d oxygen o e silicon si f silicate compounds. Earth s interior is generally divided into three major layers.

Interior of the earth. The earth s interior is composed of four layers three solid and one liquid not magma but molten metal nearly as hot as the surface of the sun. The deepest layer is a solid iron ball about 1 500.