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 ...

The Earth has a layered ... will eventually run out. This could take hundreds of years or be much quicker depending on how humans use resources. The mantle is a semi-solid layer below the crust.

Keep reading to learn more about Earth's different layers, its atmosphere, and what makes the "blue planet" unique. Earth is made out of different layers, and those layers get hotter and more ...

The Earth is made up of different layers: Therefore, instead of tectonic plates moving because of the convection currents, evidence suggests it is the plates that drive the convection. Slab pull ...