Interior Earth

Interior of the earth.

Interior earth. Interior structure of the earth structure of the earth. 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. Scientific understanding of the internal structure of earth is based on observations of topography and bathymetry observations of rock in outcrop samples brought to the surface from greater depths by volcanoes or volcanic activity analysis of the seismic.

Due to gradual increase in density the temperature inside has increased. Physical structure of the earth 5 layers lithosphere rigid outer layer crust and part of the mantle asthenosphere solid rock that flows slowly found below lithosphere like frosting part of the mantle mesosphere middle layer part of the mantle. The interior of the earth can reveal the nature of lithosphere.

An outer silicate solid crust a highly viscous asthenosphere and mantle a liquid outer core that is much less viscous than the mantle and a solid inner core. The internal structure of earth is layered in spherical shells. But its properties are studied indirectly by deducing conclusions from the study of earthquake waves that propagate through the interior rocks and other such indirect means.

The crust the mantle and the core. 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. Earth s interior is generally divided into three major layers.

Hence this lesson is about the interior of the earth. The hard brittle crust extends from earth s surface to the so called mohorovicic discontinuity nicknamed the moho. 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 crust is the outermost. A knowledge of earth s interior is essential for understanding plate tectonics. 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.