A layer of charged particles, called the ionosphere, surrounds Earth, extending from about 50 to 400 miles above the surface of the planet. Disclaimer: AAAS and EurekAlert! are not responsible for ...

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 Earth's structure. Planet Earth is not a solid ball of rock, it's made up of different layers. The crust of ... from solid iron and nickel. In this diagram, the red lines represent the edges ...