CK-12 Foundation
Ck 12: Earth Science: Weather Fronts
[Free Registration/Login may be required to access all resource tools.] Describes the fronts that occur when two air masses collide.
Scholastic
Scholastic: Study Jams! Science: Weather & Climate: Air Masses & Fronts
A video and a short multiple-choice quiz on the topic of air masses and fronts. It describes the types of weather fronts, what an air mass is, and the four types of air masses in the US.
Other
Classzone: Weather Forecasters Use Advanced Technologies [Pdf]
An excerpt from an earth science textbook. The chapter shown here covers concepts about how weather data is collected, displayed and how meteorologists forecast fronts and storms.
Curated OER
Science Kids: Science Images: Clouds
An interesting formation of clouds settles in for the afternoon in front of an otherwise blue sky.