The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...

What is deep inside that makes it? National Geographic stated that our Earth is made up of three layers: the crust, the ...

deep inside Earth – dense regions of material that slow seismic waves down to a crawl. Furthermore, the researchers think these iron-rich layers would have had an insulating effect, keeping ...

The Earth is made up of different layers: Therefore ... The movement of the plates and the activity inside the Earth, is called the theory of plate tectonics.

The Earth consists of three layers: crust, mantle, and core. The Earth's crust is the outermost layer of the planet, consisting of solid rock that forms the Earth's surface. The mantle is the semi ...