Audisee® eBooks with Audio combine professional narration and text highlighting for an engaging read aloud experience! You push a swing. Your brother pulls a wagon. Forces are at work all around you. But what exactly is a force? And how do forces act on different objects? Read this book to find out! Learn all about matter, energy, and forces in the Exploring Physical Science series—part of the Lightning Bolt Books™ collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt Books™ bring nonfiction topics to life!