What is Atmospheric Pressure?
Atmospheric pressure, often referred to as barometric pressure, is the force exerted by the weight of air in the Earth’s atmosphere. It plays a vital role in weather patterns, aviation, and even human health.
Causes of Atmospheric Pressure
Gravity pulls air molecules toward the Earth, creating pressure. This pressure decreases with altitude because there are fewer air molecules above. Temperature and humidity also influence atmospheric pressure variations.
Effects of Atmospheric Pressure
Changes in atmospheric pressure affect weather conditions, leading to storms or clear skies. It also impacts aircraft performance, scuba diving, and can cause altitude sickness in humans.
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Frequently Asked Questions
How is atmospheric pressure measured?
It is commonly measured using a barometer, in units such as Pascals (Pa) or inches of mercury (inHg).
Why does atmospheric pressure change?
Variations occur due to weather systems, temperature changes, and altitude differences.
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