The continnental Crust Oceanic Crust and very top of Earths mantle make up a hard surface that breaks into tectonic plates. This layer of the Earth is referred to as the _ and it floats or moves on a melted layer of Earth called the_

Cruste Mantle
Plates Lithosphere
Lithosphere Asthenosphere
Lithosphere Hot Spot

The layer of the Earth referred to as the plates and that floats or moves on a melted layer of Earth called the asthenosphere is the lithosphere.