This is a diagram showing the shapes of different types of clouds a the heights that they form at.
Clouds are given different names based on their shape and their height in the sky. Learn about each cloud type and how they are grouped.
How clouds form
How do the water droplets and ice crystals that make up clouds get into the sky? And why do different types of clouds form?
Cloud Image Gallery

Photos of various types of clouds and diagrams to help you understand clouds.

Cloud Videos

Short video clips about clouds - including different types of clouds, where they form in the atmosphere, and their shapes.

cloud games and simulations
Test your knowledge with one of our games or gain a deeper understanding of clouds through a simulation.
Cloud Activities
Discover clouds through scientific investigations of how clouds form and observation and art activities. You can even make your own portable cloud!