Question

which weather front forms when a cold air mass moves into a warm air mass, causing thunderstorms and heavy rain? cold front stationary front occluded front warm front

Explanation:

A cold front occurs when a cold air mass moves into a warm air mass. The cold air, being denser, pushes the warm air up rapidly. As the warm air rises, it cools, and the moisture in it condenses, leading to the formation of thunderstorms and heavy rain. A stationary front has little movement and often leads to prolonged cloudiness and precipitation. An occluded front forms when a cold front overtakes a warm front. A warm front is when a warm air mass moves into a cold air mass, usually leading to more gradual weather changes like light rain and warming temperatures.

Answer:

Cold front