The thin outermost layer of the solid earth is called the:
mantle
crust
outer core
asthenosphere

The thin outermost layer of the solid Earth is called the crust. The correct option among all the options given in the question is the second option. The crust actually accounts for less than 1 percent of the volume of the Earth. The Earth can actually be divided into four parts and they are crust, mantle, outer core and inner core.

Geologists use  seismic waves to  locate an earthquake's epicenter..