Look up Adam Dziewonski and the PREM model or go to one of the Calif Uniz for a newer model called a REM model. These are tools that, like weather models, disagree and one guy takes shots at the other. Dzieonski's has been in use since 1980 and its pretty good for showing up the approximate different seismic zones beneath the earth.
There are at least 2 liquidus layers in the mantle and the core. Several mdels want to show an aditionl liquidus but , what the hell, nobody's yet drilled out any of them.
Penn State made up a nice cross sectional color 2d models based on PREM . Let it be said that the earth is spherically layered like a Smith Island Cake, lotsa layers , some wet. The central portion of the core is...... well that's another story.