The Earth's crust is thought to be divided into huge, movable segments, called plates, which float on a soft plastic layer of rock.
⇑ Translate the sentence above by Google ⇑
Related: crust, float
Prev: This article focuses on radiation present in the earth crust.
Next: All are slowly moving because the plates float on a denser semi-liquid mantle, the layer between the crust and Earth's core.
