Question

The Hadley Cells are a giant convection system of moist, warm, rising air that drops its moisture as it rises, then settles into a stable high-pressure system that slowly descends. These cells are situated over the Polar regions.

A. True
B. False

Answer 1

Hadley Cells are equatorial atmospheric circulation patterns, not polar, and involve warm air rising, cooling, and descending at approximately 30 degrees latitude, creating subtropical high-pressure zones.

Step-by-step explanation:

The statement that the HADLEY CELLS are situated over the Polar regions is false. Hadley Cells are a part of Earth's atmospheric circulation but they are located at the equator, not the poles. They consist of a convection system where warm air rises at the equator, cools and loses moisture as it moves towards higher latitudes, then descends as a dry, warm air mass around 30 degrees north and south latitude. This descending air creates the stable high-pressure areas typically found in subtropical regions, leading to dry and arid conditions.

These processes are similar to other large-scale atmospheric patterns, such as those observed on the gas giant planets, where internal heat and sunlight can drive convection currents. Moreover, Earth's rotation impacts these air circulation patterns, causing the easterly trade winds in the northern hemisphere due to the Coriolis effect.