Question

What are the factors that affect atmospheric pressure?

Accepted Answer

The force exerted by a column of air due to its weight at a specific location on the Earth's surface is referred to as atmospheric pressure. Factors Affecting Atmospheric Pressure:

Temperature: Warmer air expands and becomes less dense, leading to lower atmospheric pressure. Conversely, colder air contracts, becomes denser, and exerts higher pressure. Areas near the equator generally experience lower pressure due to higher temperatures.

Altitude: Atmospheric pressure is highest at sea level and decreases with increasing altitude. As one ascends in elevation, the air density decreases, resulting in lower atmospheric pressure.

Water Vapour: Air with a higher concentration of water vapour is lighter than dry air. Water molecules are less massive than other gas molecules, so an increase in water vapour reduces air density. Consequently, moist air exerts less pressure than dry air.

What are the factors that affect atmospheric pressure?

Formation: Formed below the Earth&#39;s surface as magma cools slowly.
Rate of Cooling: Slow cooling results in the development of large crystals over thousands of years.
Characteristics: Hard, compact, and coarse-grained due to the prolonged cooling process.
Examples: Dolerite and granite.

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