Download or read book Let's Explore Gravity written by Walt K. Moon and published by Lerner Publications ™. This book was released on 2018-01-01 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The earth is round, so why don't some people hang upside down? The answer is gravity! With age-appropriate critical thinking questions and carefully leveled text, young readers will learn all about the concept of gravity while building nonfiction reading skills.