Air Pressure

Air pressure, or atmospheric pressure, is the force exerted by the weight of air above a given point. It decreases with altitude, leading to lower pressure at higher elevations. This phenomenon affects weather patterns, as areas of low and high pressure interact to create wind and precipitation. High-pressure systems typically bring clear skies and stable weather, while low-pressure systems are associated with clouds and storms. Meteorologists use barometers to measure air pressure, helping to predict weather changes. Variations in pressure also impact human activities; for instance, airplane cabins are pressurized to ensure passenger comfort at high altitudes. Understanding air pressure is vital for navigation, both in aviation and maritime contexts. It also plays a role in understanding phenomena like hurricanes and tornadoes, which are influenced by pressure differentials.