Question

what do you know about the interior of the earth? Draw soil profile?

Answer 1

HEY FRND ☺☺✋
↪✴Volcanic eruption deliver information by the means of molten magma that comes out of Earth’s interiors. But, its difficult to determine the depth of such magma’s origin.Surface rocks are readily available earth material.Gold mines go to a depth of 5 km on an average, these serve as good opportunities for studying the depths of earth.
First, seismic waves have their direction of motion changed (refracted) by variations in the interior density.
⚫Thus, by studying the way such waves propagate in the Earth we can learn something about density variations. Second, the fact that P-waves propagate in liquids but S-waves do not allows us to determine if portions of the interior are liquid
✴Accumulated and detailed seismic studies, coupled with theoretical speculation, suggests the interior structure shown schematically on the left (the figure is not to scale). The Earth is believed to have a solid inner core, made mostly of iron and nickel. This is surrounded by aliquid outer core, also mostly iron and nickel. ✴⚫↪The diameter of the core is estimated to be 7000 km, compared with a 12,700 km diameter for the entire planet. The crust is only a few tens of kilometers thick. The region between the core and the crust is called the mantle. The upper part of the mantle and the crust together are called thelithosphere. Sitting just below the lithosphere is a region of plastic consistency called the aesthenosphere. We shall have more to say about the lithosphere and aesthenosphere shortly. ☺☺☺☺✋✌