GENERAL KNOWLEDGE

Detailed explanation-1: -A warm air mass pushes into a colder air mass (the warm front), and then another cold air mass pushes into the warm air mass (the cold front). Because cold fronts move faster, the cold front is likely to overtake the warm front. This is known as an occluded front.

Detailed explanation-2: -With a cold front, a colder air mass is replacing a warmer air mass. A warm front is the opposite affect in that warm air replaces cold air.

Detailed explanation-3: -More commonly, the meeting of a cold front and a warm front will produce rainfall, because the contact of cold and warm will cause water vapor within either air mass to condense, forming water droplets (if the air mass is sufficiently cold enough, this precipitation will be snow or even hail instead of rain).