Distinguish between sky wave and space wave propagation. Give a brief description with the help of suitable diagrams indicating how these waves are propagated.

Explanation

### Step-by-Step Text Solution

**1. Definition of Sky Wave Propagation:**
Sky wave propagation refers to the transmission of radio waves that are sent from a transmitting antenna towards the ionosphere. These waves are reflected back to the Earth by the ionosphere, allowing them to reach distant locations that are beyond the line of sight of the transmitting antenna.

**Diagram for Sky Wave Propagation:**
- Draw a horizontal line to represent the Earth's surface.
- Above the line, draw a curved line to represent the ionosphere.
...