Explanation: Isobars represent patterns of pressure. They show how pressure is changing over space and can help describe the large scale weather patterns across a region in the map.
The isobars are the lines that are commonly used in a weather map in order to highlight the areas consisting of equal pressure. These places are connected by the lines. It is an important feature of weather map that helps a map reader to understand the atmospheric pressure conditions of different places.
Each line is marked a certain number that represents the amount of pressure existing in that area. The closer arrangement of isobars indicates a greater change in the amount of pressure and wider isobars indicate a gradual change in pressure.
