What is Atmospheric Pressure?
Atmospheric pressure is the force exerted by the weight of air in the Earth’s atmosphere. Measured in units like pascals or millibars, it affects weather patterns, human health, and even daily activities like cooking.
Causes of Atmospheric Pressure
Gravity pulls air molecules toward the Earth’s surface, creating pressure. Variations occur due to altitude, temperature, and weather conditions—higher altitudes have lower pressure, while storms often signal pressure changes.
Effects on Weather and Environment
Changes in atmospheric pressure drive wind and precipitation. Low pressure often brings rain, whereas high pressure results in clear skies. It also influences ocean currents and aviation safety.
Human Health Impacts
Sudden pressure drops can cause headaches or joint pain, especially in sensitive individuals. Pilots and divers monitor it to avoid conditions like decompression sickness.
FAQ Section
How is atmospheric pressure measured?
It’s typically measured with a barometer, in units such as hectopascals (hPa).
Why does pressure decrease with altitude?
Air becomes thinner at higher elevations, reducing molecular density and pressure.
For a detailed guide, read our article on define atmospheric pressure.
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