Correct Answer - Option 4 : Ionosphere
The correct answer is Ionosphere.
The layer of the atmosphere which reflects the radio waves back to the earth is called Ionosphere.
- The ionosphere is a very active part of the atmosphere, and it grows and shrinks depending on the energy it absorbs from the Sun.
- The name ionosphere comes from the fact that gases in these layers are excited by solar radiation to form ions, which have an electrical charge.
- The stratosphere is a layer of Earth's atmosphere.
- It is the second layer of the atmosphere as you go upward.
- The troposphere, the lowest layer, is right below the stratosphere.
- Temperatures rise as one moves upward through the stratosphere.
- The troposphere is the lowest layer of Earth's atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere.
- Most types of clouds are found in the troposphere, and almost all weather occurs within this layer.
- The bottom of the troposphere is at Earth's surface.
