Plate Tectonics

Britannica Kids-Plate Tectonics

The theory, or idea, of plate tectonics says that Earth’s outer layer is made up of large, moving pieces called plates. All of Earth’s land and water sit on these plates. The plates are made of solid rock. Under the plates is a weaker layer of partially melted rock. The plates are constantly moving over this weaker layer...

Kiddle-Plate Tectonics Facts For Kids

Below the lithosphere is the asthenosphere. The asthenosphere is like a solid or a hot viscous liquid. It can flow like a liquid on long time scales. Large convection currents in the asthenosphere transfer heat to the surface, where plumes of less dense magma break apart the plates at the spreading centers. The deeper mantle below the asthenosphere is more rigid again. This is caused by extremely high pressure...

Layers of Learning-Lesson Plans

Third Pod From the Sun-Plate Tectonics

National Geographic-Plate Tectonics