What does swimming in a pool, drinking through a straw, breathing in air, and circulating blood all have in common? They all require a form of air or water pressure! Readers will discover the variety of ways that air and water pressure make an impact on our lives. This fact-filled nonfiction title includes real-life examples, vivid images, helpful graphs and diagrams, and basic experiments to help students begin to understand physics concepts. Readers will learn about Archimedes' Principle, atmospheric pressure, vacuums, water density, and hydraulics through informational text and interesting facts featuring Time For Kids© content. This book also includes text features such as a table of contents, glossary, and index, as well as resources like a bibliography and a list of websites for learning more. This high-interest book will engage readers from cover to cover!