When Air Masses Meet

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  • Hello welcome to PMS middle school today we will be exploring and teaching you about air masses, let's go.
  • The one thing that is very easy to gt mixed up in a way is the difference between Air masses and fronts. Air masses is a big pocket of air like a continental polar which is a cold pocket of air usually from canada and the north. And a front is the two air masses meeting and colliding. For instance continental polar and maritime tropical which is a warm air mass could meet and that would cause a front.
  • Different things happen to the molecules in different fronts. For instance in a warm front the temperature is warmer so molecules move more because they have more energy. When the molecules in the air move more, the air will become less dense because the molecules are spread out. Also in a warm front there is more pressure because the molecules spread out so they create more pressure. Just look at it like a balloon if you blow into it expands and puts more pressure on the balloon.
  • there are certain things you need to know about the molecules in different fronts.
  • A cold front is the opposite to a warm front. The temperature is colder so the molecules do not move as much because they have less energy. This makes them denser and when molecules are denser there is less pressure because a cold front is forcing the air to go up instead of pushing down.
  • The last thing to know about air masses and fronts is the water cycle. The water cycle is a never ending process of water falling from the atmosphere to earth and then going back up to the atmosphere as water vapor. And this cycle happens at the base of were the two air masses meet.
  • We hope you learned something about weather.
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