what are tectonic plates and how do they work
Making the world better, one answer at a time. Tectonic Plates are large plates of a rock. When they push together they form mountains or volcanos. So Tectonic Plates are just rocks who push together.
Plate tectonics. The Earth's crust and upper part of the mantle [mantle: A zone of hot rock in the interior of the Earth, located between the outer crust and the molten core. ] are broken into large pieces called tectonic plates. These are constantly moving at a few centimetres each year.