Air Mass

A huge body of air with similar temperature and moisture throughout
Real World Example
Imagine you're in a room where every wall is painted the exact same shade of blue, creating a uniform environment that feels consistent no matter where you stand. Similarly, an air mass is like this room because it is a large volume of air that maintains the same temperature and moisture levels throughout. Just as the blue paint creates a consistent atmosphere in the room, an air mass creates a consistent climate over the area it covers, with the uniformity of the temperature and moisture acting like the uniform color on the walls.
Real World Example Illustration
Practice Version
