Introduces simple machines, including screws, levers, wedges, and pulleys, describes how each makes everyday life easier, and provides activities demonstrating these machines in action.

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, you can learn the answers to these questions and more. If you are interested in competing in science fairs, the book contains lots of great suggestions and ideas for further experiments.

"Anyone who learns about the force of gravity in our lives has probably wondered what it's like to be weightless. In this volume, readers can find out the incredible impact gravity and other forces, such as magnetism, have on their life every day. Each chapter gives an accessible overview of the topic and then invites readers to dive deeper with relatable photographs, diagrams, sidebars, and fun facts. Through riddles, pop quizzes, and simple experiments, the book encourages readers to engage with the information they're learning in order to understand it better for both class and life on Earth."

How do forces work in the world? Find out the different ways in this fact-filled title.

Elaborate on the concept of forces and motion using this science inquiry card and lesson. Using vibrant, engaging images for science exploration allows all students to make connections and relate science concepts to new situations.

Offers instructions for creating simple machines using levers, wheels, and pulleys to conduct experiments that demonstrate such concepts as energy, force, and friction.