Changes in air pressure are caused by differences in air temperature
above the earth, and the temperature of an air mass is determined by
its location. For example, air masses above oceans are typically cooler
than air masses above continents. Air temperature differences create
wind and cause pressure systems to develop. The wind moves
pressure systems and these systems tend to change as they pass over
mountains, oceans, and other areas.


HOW IS THIS RELATED TO MY RESEARCH QUESTION WHICH IS

WHAT EFFECT DOES THE AMOUNT OF AIR PRESSURE HAVE ON HOW FAR A SOCCER BALL TRAVELS WHEN KICKED?