The theory is called Plate Tectonics.
The lithosphere is the physical layer of the Earth that contains the crust and the brittle uppermost mantle.
The mantle or perhaps you are referring to the asthenosphere, the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
The solid layer of the earth that can still flow is called the asthenosphere. This layer is located in the mantle of the earth the layer below the upper crust and lithosphere, home of the tectonic plates.
The lithosphere crust
Biosphere, Atmosphere, Lithosphere, & Hydrosphere
A theory that says the lithosphere is divided into plates that move around on top of the asthenosphere is called '' plate tectonics''
The upper mantle is divided into two main sections: the lithosphere and the asthenosphere. The lithosphere is rigid and includes the crust, while the asthenosphere is a semi-fluid layer beneath the lithosphere where convection currents occur.
large pieces of the lithosphere that move around on the asthenosphere are called Tectonic Plates.
The lithosphere floats on a layer of the Earth's mantle called the asthenosphere. The asthenosphere is a semi-fluid layer beneath the lithosphere that allows the movement of tectonic plates.
The part of the mantle below the lithosphere is called the Asthenosphere.
The rigid zone above the asthenosphere that includes the crust and upper mantle is called the lithosphere. This layer is divided into tectonic plates that float on the semi-fluid asthenosphere and move due to the convection currents beneath them.
The uppermost layer of the mantle is called the lithosphere. It is a rigid outer layer that includes the crust and a small part of the upper mantle. The lithosphere is divided into tectonic plates that float on the semi-fluid asthenosphere below.
Upper Mantle
The large pieces of the lithosphere that move around on the asthenosphere are called tectonic plates. These plates are constantly shifting and interacting with each other, resulting in various geological phenomena such as earthquakes and volcanic activity.
Because of something called Isostacy-the gravitational equilibrium between lithosphere and asthenosphere, such that plates "float" at an elevation that dependes on the thickness and density. EX. Think floating ice cubes
The large sections of lithosphere that float on the asthenosphere are called tectonic plates. These plates are rigid sections of Earth's lithosphere that move and interact with each other at plate boundaries, causing geological phenomena like earthquakes and volcanic eruptions.
The asthenosphere.