What Is a Tectonic Plate and How Many Tectonic Plates Are There On Earth?
The Earth is not a solid shell, but rather slabs of rock that scientists call Tectonic Plates. These plates, seven large plates and several smaller ones, have been moving for millions of years. They hold the ocean floors and the continents. Their movements cause new seafloor to form and earthquakes and volcanoes to occur. Mounta
