Tornadoes are some of the coolest--and most destructive--weather phenomena. Some are tiny and just move a few hundred feet; some are huge and have a path of hundreds of miles! This book breaks down these incredible forces of nature for struggling readers or those in need of review on the topic. The achievable main text includes how tornadoes form, how they are measured, and some of the most destructive ever. Full-color photographs show readers tornadoes in action and their aftermath while maps and diagrams aid comprehension of the Each science content.