Cold Front: Cold fronts happen when fast moving warm air smashes into cold air. Cold air has more mass then hot air so it stays toward the ground, while hot air rises above the large amount of cold air. The warm air eventually cools to the temperature of water vapor droplets.

Warm Front: A slow moving amount of warm air collides with the rising cool air turning the slow moving warn air into evaporation. Turning it into rain causing slight small storms or rains.



Stationary Front: A stationary front is when warm air and cool air soon meet but doesn't pass each other and stays together where they touch. Cool air moves back as hot air gets bigger, then the warm air does the same thing. repeatedly, untill soon forms clouds and rains.



Occluded Front: An Occluded front is where warm air gets caught in between dense cool air and more less dense cool air. The most dense air pushes the other cool air to move it upward, causing the warm air to get cooler. To cuase snow, rain, and clouds.