Tectonic Plates Facts – What are Tectonic Plates?

What are Tectonic Plates? “Plate tectonics” is the theory that Earth’s outer shell is divided into large slabs of solid rock, called “plates,” that glide over Earth’s mantle, the rocky inner layer above Earth’s core. The Earth’s solid outer layer, which includes the crust and the uppermost mantle, is called the lithosphere. Wikipedia says that … Read more