Cold and warm fronts?

Question

What's the difference between cold and warm fronts?

Answer 1

Aside from the obvious, cold fronts are usually dry air, most times on the leading edge of a high pressure zone.
Warm fronts often contain more humid air.
In the U.S. (I don't know where you are), warm fronts most often approach from the south, out of the Gulf of Mexico, and cold fronts fron the north, out of Canada.

Answer 2

If the colder airmass actively displaces the warmer air at the surface,then the front is called cold front.If the warmer air flows actively upwards over the colder wedge below,then it is called a warm front.
The slope of cold fronts and the wind shift in cold fronts will be more than that of the warm fronts.Cold fronts will have very bad weather conditions(like heavy rain,frequent thunderstorm,severe turbulenc, line-squalls etc) when compared to warm fronts.
The vertical motion at the cold front will be more vigorous due to greater instability.The rain belt will be wider than that of the warm front.

Answer 3

A cold front moves in a southerly direction, while a warm front moves mainly in a northerly direction.

The surface winds blow with a southerly component, in front of a cold front, and blowing with a northerly component in after the front passes. The reverse is true for a warm front.

The air tends to become dryer and colder with the passage of a cold front, while the air becomes more humid and warmer with the passage of a warm front.