What happens at a cold front?Group of answer choicesCold air replaces cold airWarm air replaces warm airCold air replaces warm airWarm air displaces colder air

Identification of the Cold Front Characteristics

When discussing cold fronts, it is essential to understand the typical behavior of air masses during such transitions. A cold front occurs when a mass of cold air advances into an area occupied by warmer air.

Selection of the Correct Answer

Based on the characteristics of cold fronts:

1. Cold Air Replaces Cold Air: This does not accurately describe a cold front situation.
2. Warm Air Replaces Warm Air: This is not characteristic of a cold front either.
3. Cold Air Replaces Warm Air: This is the defining feature of a cold front. The cold air, being denser, pushes under the warm air mass, which can lead to cloud formation and precipitation.
4. Warm Air Displaces Colder Air: This describes a warm front rather than a cold front.

Final Answer

Cold air replaces warm air. This is the most accurate description of what happens at a cold front.