-High Pressure System-
Pressure systems, such as a high pressure system, also have causes and effects. when pressure differences occur, causing air to move to create a high pressure center. Air will move all the way around a high pressure center, causing a high pressure system. when the air masses of different pressures meet and form a high pressure system, the air will circulate clockwise (in the Northern Hemisphere) and sink, then spread out towards areas of lower pressure. An effect of a high pressure system is clear skies and small, calm breezes because when the air sinks, the water droplets evaporate, causing clouds to disappear. After the system passes, the air can be warm or cold and moist or dry. Many things can cause a high pressure system and it affects several things. |
-Low Pressure System-
The causes of low pressure systems can affect many things. A low pressure system is usually caused along a boundary between a warm and cold air mass on a center of low pressure. When the air masses meet, they try to pass each other, causing the air to circle around the low pressure center then up in a counterclockwise motion (in the Northern Hemisphere). The air will then move into a high pressure system and move down and out. One effect of a low pressure system is stormy weather caused by air rising, losing pressure, and moving faster. Low pressure systems can also affect high pressure systems. A low pressure system is caused by pressure differences in air and can effect weather in the atmosphere. |