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 such as cooking.

Causes of Atmospheric Pressure

Gravity pulls air molecules toward the Earth, creating pressure. Variations occur due to altitude, temperature, and weather conditions—higher altitudes have lower pressure, while low-pressure systems often bring storms.

Effects on Weather and Health

Changes in atmospheric pressure influence weather development; dropping pressure can signal rain or storms. For humans, sudden shifts may cause headaches or joint pain, especially in sensitive individuals.

Common Questions Answered

How is atmospheric pressure measured? It’s typically measured with a barometer, in units like hPa or inches of mercury.

Why does pressure decrease with altitude? There are fewer air molecules at higher elevations, reducing the force they exert.

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