In this book, early readers will learn about what makes up clouds and how they form in the sky. Vibrant, full-color photos and carefully leveled text will engage beginning readers as they learn how water drops stick to dust to form clouds. A picture diagram shows how clouds form as part of the water cycle, while a picture glossary reinforces new vocabulary. Children can learn more about clouds online using our safe search engine that provides relevant, age-appropriate websites. What Are Clouds Made Of? also features reading tips for teachers and parents, a table of contents, and an index. What Are Clouds Made Of? is part of Jump!'s Science Questions series.