This is due to the Cold Front because cooler, denser air wedges underneath the less-dense warm air.
what happens in cold and warm masses pressure
Stationary front.
occluded
Warm air masses are lighter than cold air masses because the molecules of cold air move slower than the warm air's molecules.
Cold air is more dense than warm air. This is why cold air masses tend to descend, and warm air masses tend to rise.
A warm front forms.
warm and hummid, cool and huimid, warm and dry, cool and dry
No, as cold air is denser.
what happens in cold and warm masses pressure
The cool air sinks, while the warm air rises. If it does so with enough force and torque, a tornado or hurricane will form.
Mostly they expand as they warm, contract as they cool.
Condensation
an occluded front.
Stationary front.
The Pacific coastal region has cool, wet winters and warm dry summers because of shifting wind patterns. As waters in the Pacific Ocean heat and cool, wind patterns change.
nothing
The ice will begin melting and will cool the warm water.