Define isobar. Give an example.

An isobar is a line on a weather map that connects points of equal atmospheric pressure. These lines help meteorologists understand weather patterns and predict changes in the atmosphere.

Characteristics of Isobars

• Equal Pressure: Each point along an isobar has the same air pressure.
• Spacing: Close isobars indicate strong winds, while widely spaced isobars suggest lighter winds.
• Weather Insights: Isobars can indicate high-pressure systems (clear skies) or low-pressure systems (cloudy and stormy weather).

Example of Isobars

For instance, if you look at a weather map showing isobars, you might see a line labeled 1010 hPa (hectopascals). This line connects all locations where the air pressure is 1010 hPa, helping to visualize the pressure distribution across a region.