Which layer of the geosphere is broken into plates? ) Asthenosphere Montle Lithosphere Core

## Step 1The geosphere is the solid part of the Earth, which includes the crust and the uppermost part of the mantle. This layer is broken into plates, which are known as tectonic plates. These plates float on the semi-fluid asthenosphere beneath them.## Step 2The asthenosphere is a part of the upper mantle that behaves plastically and flows slowly. It is not broken into plates.## Step 3The mantle is the layer between the crust and the core. It is not broken into plates.## Step 4The core is the innermost layer of the Earth. It is not broken into plates.