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 Layers of Earth's Atmosphere It's easy to imagine ... The atmosphere also offers us protection from physical objects from space, too; you only need to look at the cratered surface of the ...

Seismic waves are shock waves that propagate through Earth's layers after an earthquake or ... surface reveals aspects of the composition and physical properties of the rocks beneath.

Scientists have always been curious about the atmosphere surrounding us, but in the past, they could not just hop on a spaceship to see what was up there. Instead, scientists hiked up high ...

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 ...