Table of Contents
How does air pressure move from one area to another?
Just like water currents in the ocean, the atmosphere has air currents that flow from one place to another. Air is constantly moving around the earth. This moving air is called wind. In areas of high-pressure (sinking air), air at ground level spreads out, moving away from the high pressure.
What does moving air do to the amount of air pressure on an area?
As air speeds up, its pressure goes down. So the faster-moving air above exerts less pressure on the wing than the slower-moving air below.
What happens to air pressure with temperature?
Air pressure can also change with the temperature. Warm air rises resulting in lower pressure. On the other hand, cold air will sink making the air pressure higher.
Does moving air have less pressure?
The faster moving air produces less pressure than the slower moving air, causing the wing to lift toward the area of low pressure.
What is the relationship between air movement and temperature?
How does the temperature of air affect air density? Heating of the earth, which in turn heats the atmosphere, is responsible for the motions and movements of the air in the atmosphere. The faster molecules move, the hotter the air. As the molecules heat and move faster, they are moving apart.
How does air move to place?
The Short Answer: Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures, the faster the air will move from the high to the low pressure. That rush of air is the wind we experience.
Why does air move from high pressure to low pressure?
Air flowing from areas of high pressure to low pressure creates winds. Warm air can hold more moisture than cold air. Air moving at the bases of the three major convection cells in each hemisphere north and south of the equator creates the global wind belts.
How does temperature affect the movement of air?
Air temperature affects the movement of air, and thus the movement of air pollution. Because energy from the Sun is absorbed by the Earth’s surface, air near the ground is warmer than air that is further up in the troposphere.
How does air pressure affect weather and climate?
Smaller pressure systems create localized winds that affect the weather and climate of a local area. An online guide to air pressure and winds from the University of Illinois is found here: http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/fw/home.rxml. Local winds result from air moving between small low and high pressure systems.
What happens to the air as it descends in the atmosphere?
When cool air descends, it warms. Since it can then hold more moisture, the descending air will evaporate water on the ground. Air moving between large high and low pressure systems creates the global wind belts that profoundly affect regional climate.