The Earth's interior is composed of four layers ... This creates very slow-moving currents as hot rock rises from the depths and cooler rock descends. The mantle is about 1,800 miles (2,900 ...

Earth is a dynamic planet, constantly undergoing change driven by internal and external forces. Currents of magma within our planet move the plates that form the continental crust in a constant ...

which moves very slowly as a result of convection currents driven by heat energy from the hot core. The outer core is liquid iron and nickel and generates the Earth's magnetic field. And the inner ...

Plate tectonics is the theory that Earth's outer layer is made up of plates, which have moved throughout Earth's history. The theory explains the how and why behind mountains, volcanoes ...