Meaning of the word asthenosphere in English

What does asthenosphere mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

asthenosphere

US /æsˈθiː.nə.sfɪr/
UK /æsˈθiː.nə.sfɪər/
"asthenosphere" picture

Noun

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.

Example:
The movement of tectonic plates is facilitated by the ductile nature of the asthenosphere.
Convection currents within the asthenosphere drive plate tectonics.