Clouds are made of water droplets or ice crystals that are so small and light they are able to stay in the air. But how does the water and ice that makes up clouds get into the sky? And why do different types of clouds form?  

Clouds Memory Game
Test your memory while you learn about clouds! Click on tiles to reveal photos of clouds - and try to find a matching pair.
Cloud Image Gallery
Photos of various types of clouds and diagrams to help you understand clouds.

A collection of educational resources to bring cloud science to elementary students.

Cloud Sorting Game
Sort photos of clouds by altitude, by composition, and into groups based on whether they are smooth or turbulent.