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.
Audisee® eBooks with Audio combine professional narration and text highlighting for an engaging read aloud experience! The earth is round, so why don't some pe
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 g
Gravity is the most immediately familiar of the four fundamental forces of nature, and its effects dominate many of the phenomena commonly observed. Timothy Cli
This volume introduces students to the force known as gravity. Readers examine many scientific concepts, including Newton's laws of gravity, mass and gravitatio