Definition

The region of the Earth's atmosphere where gases are ionized, affecting radio wave transmission, located between about 30 miles and the exosphere.

Example

The ionosphere plays a crucial role in radio communication by reflecting signals back to Earth.

Conversation

Have you ever heard of the ionosphere?

Yeah, it's that part of the atmosphere that affects radio waves, right?

Exactly! I read that it extends up to about 30 miles above the Earth.

That's fascinating! I had no idea it was so high up.

Synonyms & Antonyms

Root Explanation

Ionosphere → It is formed from "ion" (from Greek "ion", meaning going) and "sphaira" (from Greek, meaning sphere). The ionosphere refers to the region of the atmosphere that contains ions and free electrons, creating a sphere of charged particles.

Memory Tip

Think of 'ions' as particles that are 'going' ('ion') and forming a 'sphere' ('sphaira') in the atmosphere, which helps you remember that the ionosphere is a region filled with charged particles.

Visually Confused Words