What is Atmospheric Pressure?
Atmospheric pressure is the force exerted by the weight of air molecules in Earth’s atmosphere. It plays a crucial role in weather patterns, human health, and various industrial applications.
Causes of Atmospheric Pressure
The primary cause is gravity pulling air molecules toward Earth’s surface, creating pressure. Temperature and altitude also significantly influence its value.
Variations and Measurement
Pressure decreases with higher altitude and changes with weather conditions. It is commonly measured using barometers in units like Pascals or atmospheres (atm).
Effects on Weather and Health
Changes in atmospheric pressure forecast weather shifts—low pressure often indicates storms. Sudden pressure drops can cause headaches or joint pain in sensitive individuals.
Frequently Asked Questions
How does atmospheric pressure affect aviation?
Pilots monitor pressure for altitude adjustments and safe flight operations.
Can humans feel pressure changes?
Yes, rapid changes may cause ear discomfort or mild physiological effects.
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