Atmospheric Pressure Definition: What It Is and How It Works

Atmospheric pressure is the force exerted by the weight of air in Earth’s atmosphere. It affects weather, altitude measurements, and even human health. Understanding the atmospheric pressure definition is essential for scientists, engineers, and weather enthusiasts.

How Atmospheric Pressure Works

Atmospheric pressure decreases with altitude due to fewer air molecules. It is measured using barometers and commonly expressed in units like Pascals (Pa) or atmospheres (atm). Variations in pressure drive weather patterns, influencing wind and precipitation.

Factors Affecting Pressure

Temperature, altitude, and weather systems impact atmospheric pressure. For example, low pressure often indicates storms, while high pressure suggests clear skies.

Common Questions

What is atmospheric pressure in simple terms?

It’s the weight of air pressing down on Earth’s surface.

How is it measured?

Barometers are the standard tools for measurement.

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