CK-12 Foundation
Ck 12: Earth Science: Circulation in the Atmosphere
[Free Registration/Login may be required to access all resource tools.] Describes the convection cells present in our atmosphere.
Scholastic
Scholastic: Study Jams! Science: Weather & Climate: Air Pressure and Wind
A video and a short multiple-choice quiz on the topic of air pressure and wind. It explains what makes air pressure change, how we measure it, how wind is created, and types of winds.
University of Illinois
University of Illinois Urbana Champaign: Severe Storms
This site talks about severe storms. Topics include the dangers of thunderstorms, types of thunderstorms, components of thunderstorms, tornadoes, and modeling.