Multiple choice

Wireless communication is reflected back to the earth's surface by the ______.

  1. Exosphere

  2. Stratopshere

  3. Trosphere

  4. Ionosphere

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The ionosphere contains charged particles (ions) that can reflect radio waves back to Earth, enabling long-distance wireless communication. This reflective property is crucial for AM radio broadcasting, satellite communication, and some military applications that rely on skywave propagation.