Audience: Students; Grades: K-5; Subject Areas: Science. (2007) This video program investigates some of the key elements responsible for weather formation. Different types of air masses and their origins are investigated, as are the formation of weather fronts. Specific weather phenomenon including tornados, hurricanes, and thunderstorms are illustrated in detail. Other important terminology includes: air mass characteristics, warm front, cold front, low pressure, storm surge, cumulonimbus clouds, and lightning.