Which of the following are two major forms of precipitation?

• A. Hail and Sleet
• B. Rain and Snow
• C. Drizzle and Mist
• D. Fog and Cloud

Answer: (B)

Precipitation is water that falls from clouds to the surface. The two most common forms you’ll encounter across many climates are rain and snow, so they’re the best example of the major forms. Rain happens when water droplets inside clouds grow large enough and survive their way down through air that’s not frozen, so they fall as liquid drops. Snow forms when the air is cold enough that water vapor deposits directly into ice crystals, which then cling together as snowflakes and fall to the ground.

Other listed forms come from more specific conditions: hail is produced by strong updrafts in thunderstorms, building up layers of ice to create hard pellets; sleet forms when raindrops pass through a cold layer and freeze into ice before reaching the ground. Drizzle and mist are lighter forms of precipitation with very small droplets, not the broader, more observable rain. Fog is a ground-level cloud, and a cloud is a collection of droplets suspended in the air—neither is precipitation itself reaching the surface.