Definition

A layer of the Earth's structure located below the lithosphere, where the material can flow and deform under pressure.

Example

The tectonic plates move on the semi-fluid asthenosphere beneath them.

Conversation

Did you know that the Earth's asthenosphere is crucial for tectonic movements?

Really? I had no idea it played such an important role.

Yeah, it's like a layer that allows the lithosphere to shift.

That makes sense! I find geology so fascinating.

Synonyms & Antonyms

Root Explanation

Asthenosphere → It is formed from "asthenes" (from Greek ἀσθενής, meaning weak) and "sphaira" (from Greek σφαῖρα, meaning sphere). The term describes a layer of the Earth that is weak and semi-fluid, allowing for the movement of tectonic plates.

Memory Tip

Think of the word 'weak' ('asthenes') to remember that the asthenosphere is a weak layer of the Earth that allows for movement.

Visually Confused Words