Definition, Meaning & Synonyms

asthenosphere

noun

/æθˈiːnəˌsfɪər/

Definition

The layer of the Earth located below the lithosphere that is involved in tectonic activity.

Examples

The asthenosphere plays a crucial role in plate tectonics.
Scientists study the properties of the asthenosphere to understand seismic activity.
Heat from the Earth’s core affects the asthenosphere’s viscosity.

Meaning

The asthenosphere is a semi-fluid layer of the Earth’s mantle that allows for the movement of tectonic plates. It is important for the dynamics of plate tectonics.