The Earth's interior is composed of four layers, three solid and one liquid ... Instead, scientists map the interior by watching how seismic waves from earthquakes are bent, reflected, sped ...

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 ...

The mantle is the thickest layer of the Earth and is made of semi-solid rock ... were from explorers and cartographers (people who drew maps). They noticed that coastlines of some countries ...

There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity.

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. A group of scientists has discovered a hidden layer of molten rock under the Earth’s ...