weather fronts

Cold Fronts
The cold air moves in and the warm air rises and this creates a cloud. The more the warm air rises the clouds start to rain. Also the more the cold air comes in below the warm air it pushes the clouds up.
WARM FRONTS
As the warm are travels the cold air goes down it pushes the cold air out and that makes a cloud and latter it starts to rain.
Stationary front
A stationary front is in the middle of warm air and cold air. As the two move closer to each other a cloud forms and it pushes it up higher as the temperature's both collide.
Occluded Front
this is were cool air pushes against cool air and the warm air is up above both temperatures and once again a cloud is formed and it rains