What would happen if gravity didn't exist? People and objects would float into space! With this basic introduction to gravity, young readers will discover how gravity works and how it affects everything in our world and beyond.

How can something that grounds us and keeps us here on this earth be so invisible and mysterious? We’re not talking about anything abstract and undetectable. We’re talking about GRAVITY! Gravity is a force that affects everyone and everything. Gravity is something we can easily understand, even kids, especially if they have the right tools to teach them. Explore Gravity! With 25 Great Projects will introduce kids ages 6-9 to the basics of gravity, including concepts of matter, attraction, and gravitational pull. Projects include creating a working model of a scale to learn what “weight” really means and how it’s affected by gravity. By playing with various weights to make a marvelous mobile, readers learn about the center of balance and how martial artists use this knowledge to throw their weight around. All the projects in this book are easy to follow, require little adult supervision, and use commonly found household products, many from the recycling box! The fun facts, trivia, jokes, comics, and hands-on activities will help kids discover the captivating science of gravity. Furthermore, the informational text and hands-on activities will excite kids about STEM, the interrelated fields of science, technology, engineering, and math.

Gravity is now so universally accepted, it seems almost impossible to believe that for millennia, the force remained unknown. Yet it wasn’t until a few brilliant minds—standing on the shoulders of the giants before them—began asking the right questions that we could explain why we don’t float off the ground, why planets remain in orbit, and why time travel remains even a distant possibility. Interspersing history with science to support STEM learning, this exciting volume chronicles the evolution of our understanding of gravity by tracing the lives and experiments of the individuals instrumental in advancing gravitational physics.

A history of gravity, and a study of its importance and relevance to our lives, as well as its influence on other areas of science. Physicists will tell you that four forces control the universe. Of these, gravity may the most obvious, but it is also the most mysterious. Newton managed to predict the force of gravity but couldn't explain how it worked at a distance. Einstein picked up on the simple premise that gravity and acceleration are interchangeable to devise his mind-bending general relativity, showing how matter warps space and time. Not only did this explain how gravity worked – and how apparently simple gravitation has four separate components – but it predicted everything from black holes to gravity's effect on time. Whether it's the reality of anti-gravity or the unexpected discovery that a ball and a laser beam drop at the same rate, gravity is the force that fascinates.

How does gravity hold the universe together? How do satellites orbit the Earth? What would happen if gravity was turned off? The visually stimulating 'Sci-Hi' books take learning science core curriculum to a whole new exciting level. Each title explores an area of life, physical, or earth science in a way that is both engaging and comprehensive.