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What is Atmospheric Pressure? Definition, Causes & Effects

What is Atmospheric Pressure?

Atmospheric pressure, often referred to as air pressure, is the force exerted by the weight of air in the Earth’s atmosphere. It plays a crucial role in weather patterns, human health, and various scientific applications.

Key Causes of Atmospheric Pressure

The primary cause is gravity pulling air molecules toward the Earth’s surface, creating pressure. Altitude, temperature, and humidity significantly influence its variations.

Effects on Weather and Daily Life

Changes in atmospheric pressure drive weather systems, leading to storms or clear skies. It also affects aviation, scuba diving, and even how we breathe at high altitudes.

Frequently Asked Questions

How is atmospheric pressure measured?

It is commonly measured using a barometer, with units like Pascals (Pa) or inches of mercury (inHg).

Why does pressure decrease with altitude?

As altitude increases, air density and the weight of air above diminish, reducing pressure.

For a detailed explanation, define atmospheric pressure with expert insights.

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Understanding atmospheric pressure can enhance your knowledge of environmental science. Explore more resources or consult experts to dive deeper into this fascinating topic!