Since air is not rising and cooling, thick cloud cover does not usually form within high pressure areas. Stormy areas of low pressure are the exact opposite of fair areas of high pressure. This activity will help us review the data already plotted on the weather maps and apply what we have learned about high and low pressure areas. The following activity will then focus on identifying general areas of high or low pressure and the weather associated with them. In this activity students will add isobars which help meteorologist to locate areas of the highest and lowest pressure.
Isobars are lines which connect stations reporting the same barometric pressure.
All points along one isobar line represent the same pressure. Sometimes, one has to estimate where the line is drawn between stations reporting readings that are close to the pressure reading of the isobar. Key Questions 1. Vocabulary isobars, high pressure areas, low pressure areas, weather station Procedure 1. Review the plotted data from the previous activity and discuss results.