Scholastic
Scholastic: Study Jams! Science: Weather & Climate: Clouds and Precipitation
A slideshow and a short multiple-choice quiz on the topic of clouds, how they form, the kinds of precipitation they can create, the main types of clouds, and cloud descriptor terms.
CK-12 Foundation
Ck 12: Fifth Grade Science: Earth Science: Weather and Water in the Atmosphere
[Free Registration/Login may be required to access all resource tools.] Discusses what causes weather, what humidity is and its role in the weather, how clouds are classified, and types of precipitation and how they form.