Question

Help: Scientists think the _____ is a solid iron with a layer of liquid iron surrounding it.

1. Outer core
2. Inner core
3. Mantle
4. Crust,

Answer 1

The inner core is made of solid iron, and it is surrounded by the liquid iron of the outer core. It is solid because the extreme pressure at the center of the earth prevents it from melting, despite the unimaginable temperatures.