Definition

The outer layer of the Earth, made up of the crust and the upper part of the mantle, which is solid and about 100 kilometers thick.

Example

The lithosphere is crucial for understanding geological processes like earthquakes and volcanic activity.

Conversation

Have you ever learned about the lithosphere in school?

Yeah, it’s pretty fascinating how it’s the outer part of the Earth.

I didn't realize it was so thick, around 100 kilometers!

Right? It's amazing to think about what lies beneath our feet.

Synonyms & Antonyms

Root Explanation

Lithosphere → It is formed from "litho-" (from Greek "lithos", meaning stone) and "sphere" (from Greek "sphaira", meaning ball or globe). The word "lithosphere" refers to the rigid outer layer of the Earth, which is composed of rock and extends to a certain depth beneath the surface, resembling a solid sphere of stone.

Memory Tip

Imagine the Earth's outer layer as a 'ball of stone' — 'litho-' means stone, and 'sphere' means ball. This helps you remember that the lithosphere is the solid outer part of the Earth.

Visually Confused Words