Question

Wireless communication is reflected to earth’s surface by
1. Troposphere
2. Stratosphere
3. lonosphere
4. Exosphere

Answer 1

Correct Answer - Option 3 : lonosphere

The correct answer is Ionosphere.

• Wireless communication is reflected earth’s surface by the Ionosphere. 
  • The ionosphere is the ionized part of Earth's upper atmosphere, from about 48 km to 965 km altitude.
  • It includes the thermosphere and parts of the mesosphere and exosphere.
  • The ionosphere is ionized by solar radiation.
  • It reflects and modifies radio waves used for communication and navigation.

• The atmosphere is divided into five different layers, based on temperature.
• The layer closest to Earth’s surface is the troposphere, reaching about 7 and 15 kilometers from the surface.
• The stratosphere is the second layer of the atmosphere as you go upwards. A high concentration of ozone, a molecule composed of three atoms of oxygen, makes up the ozone layer of the stratosphere.
• The uppermost layer, that blends with what is considered to be outer space, is the exosphere. The pull of Earth’s gravity is so small here that molecules of gas escape into outer space.