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high pressure,low pressure,cold front,warm front,warm air mass,cold air mass
If the cold air is advancing, that makes it a cold front.
Pressure differences between warm and cold air masses cause fronts or high/low pressure systems. A warm front is when a warm, moist air mass slides up and over a cold air mass, and a cold front is the opposite.
A cold front.
a cold front
The Low Pressure Air Mass is the active feature of Our Atmosphere, air rises at it's center.The High Pressure Air Mass exists where-ever the Low does not: Air rising at the center of Lows descends at the centers of High Pressure Systems.The Low Pressure Air Mass acts as a Heat Pump that takes Heat North and Cold South.
Cold and dry
Continental polar air mass.
Because the warm air mass (high pressure) rotates to the right (clockwise), and the cold air mass (low pressure) rotates to the left (counter clockwise). With them both going in two different directions they can't combine, therefore they collide resulting in a storm.
There are cold and dry air that exists in a continental polar air mass
high pressure because the air is very dense. so it's pressure is also very high
When two air masses collide, it is called a front.