Question

1. when a warm front approaches, the most likely sequence of atmospheric changes would be: immediate temperature drop and clear skies gradual cloud thickening and light to moderate rain sudden thunderstorm activity immediate wind direction shift to northwest

Explanation:

When a warm front approaches, warm, moist air rises over cooler air. This causes clouds to gradually thicken as the air cools and condenses. The result is often light - to - moderate rain. A temperature drop is associated with a cold front, sudden thunderstorms are more common with cold fronts or unstable air masses, and an immediate wind shift to the northwest is not characteristic of a warm - front approach.

Answer:

Gradual cloud thickening and light to moderate rain