Question

give a detailed account of the structure of the earth

Answer 1

The interiorstructure of the Earthis layered in spherical shells: an outersilicatesolidcrust, a highlyviscousasthenosphereandmantle, a liquidouter corethat is much less viscous than the mantle, and a solidinner core. Scientific understanding of the internal structure of the Earth is based on observations oftopographyandbathymetry, observations ofrockinoutcrop, samples brought to the surface from greater depths byvolcanoesorvolcanic activity, analysisof theseismic wavesthat pass through the Earth,measurements of thegravitationalandmagnetic fieldsof the Earth, and experiments with crystalline solids at pressures and temperatures characteristic of the Earth's deep interior