Are there clouds in the sky today? What kind are they? Do you know how to tell the weather by looking at them? Learn all about cumulus clouds. Find out what happens when they get full of water or when the wind blows them higher or lower. Features include audio, comprehension questions, educational front/back matter, full-color photographs, glossary of key words, index, informative sidebars, note to parents and educators, and table of contents. Downloadable Teacher Notes available.