Friday, December 5, 2008

weather fronts

cold fronts
A cold front happens when moving cold air mass comes and moves the worm air mass when the cold front hits it. The cold air's mass is denser than the worm air so the worm air moves to make way.

worm front
at a worm front slow moving warm air mass collides with a cold air mass. the worm air then rises over the cold front.

stationary front
cold and worm air masses collide with each other but neither has enough force to over power the other. They than face each other in a "stand off".

occluded front
this is the most complex front occers when a cold air mass and a cool air mass colide with a worm air mass stuck in the middle. the cold and cool air masses mix and push the worm air up.