A simple look at motion.

What is friction? What is the coriolis force? Young scientists will explore the physics of forces and motion with the great experiments in this book. Full-color illustrations highlight key points to make science a snap. Many experiments are followed by ideas for science fair projects. Help students ace their next physics project or test.

Solids, liquids, and gases, oh my! Readers will learn all about the states of matter and fundamental physical principles with the fun science experiments in this book. Readers find out if they can make water flow upward, if carbon dioxide is heavier than air, and more. Many experiments include ideas students can use for their science fair.

Readers learn about barometers, humidity, snowflakes, and more with the great weather science experiments in this book. Authors Robert Gardner and Salvatore Tocci guide readers through their best weather science experiments using full-color illustrations. Many experiments include ideas for a student's science fair.

How can you tell if a moving object is accelerating? Why are pulleys used to lift objects? Can you observe weightlessness in everyday situations? Using easy-to-find materials and the scientific method, readers can learn the answers to these questions and more. If readers are interested in competing in science fairs, this book contains great suggestions and ideas for further experiments.

Do the properties of metal change when heated? Why do some objects float in water while others sink? Can you measure the density of a gas? Using easy-to-find materials and the scientific method, readers can learn the answers to these questions and more. If readers are interested in competing in science fairs, this book contains great suggestions and ideas for further experiments.

Its bed is loaded up. The driver's at the wheel. This dump truck is on the move! What do dump trucks haul? And how do drivers control the trucks? Read this book to find out!

Its wings quickly spin. It flies high and fast. This helicopter is on the move! How do helicopters fly? And what jobs do helicopters do? Read this book to find out!

It rumbles through the city and the countryside. It travels on a track. This train is on the move! What kinds of things do trains carry? And who controls trains? Read this book to find out! Learn all about mighty machines in the Vroom-Vroom 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!