Question: there is what inside the earth

Nicolas Biber answered on 16 Jun 2011:

I’m not a geologist, but I’ll try to answer this question as best I can. At the top we have about 35 km of solid crust (that’s deeper than the oceans go). Then we have 25 km of upper mantle. then almost 3000 km of mantle. The mantle is very viscous (something between solid and liquid) and the ‘currents’ in the mantle cause plate tectonics (this is how our continents move). Below the mantle we have more than 2000 km of outer core which is already fluid, and for the last 1300 km there is the inner core. The outer and the inner core are separated because the inner core turns slightly faster than the rest of the earth.