Final answer:
Tectonic plates are the giant slabs of lithosphere that move around on the Earth's surface.
Step-by-step explanation:
The giant slabs of Lithosphere that move around on the Earth's surface are called tectonic plates. These plates are made up of the Earth's crust and upper mantle and float on the semi-fluid layer beneath them. There are several tectonic plates on Earth, including the Pacific Plate, the Eurasian Plate, and the African Plate.
Learn more about Tectonic plates