Did you know that there are about 800 tornadoes in the United States every year? Or that a cyclone twice the size of Earth has been spinning on Jupiter for more than 300 years? Learn this and other fascinating facts about these powerful forces of nature in Sky Science: Storms. This is an AV2 media enhanced book. A unique book code printed on page 2 unlocks multimedia content. This book comes alive with video, audio, weblinks, slide shows, activities, hands-on experiments, and much more.