A comprehensive set of titles about physical science topics that feature easy-to-follow text, lab activities, supporting graphics, highlighted content-area vocabulary, sidebars, photographs, graphs, glossary and index.

What does this book, a table, and your big toe have in common? They are all solids! A solid keeps its shape and always has the same volume. Read this book to learn about solids and how they are different from liquids and gases.

True or False: The only reason to play sports is to have fun. False! They also offer opportunities for readers to learn and apply concepts and principles related to force and motion. Readers learn how science plays a critical factor in any athlete's quest to be the best at his or her sport. They read how mass is related to acceleration and velocity. Physics and aerodynamics affect many sports and help athletes strategize their next moves against their...

Ice cream is a solid. But when it melts, it becomes a liquid. Solids can change to liquids and back again by melting and freezing. Read this Spanish-translated book to learn what happens when heat and cold and solids meet.

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This Spanish-translated book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, who works against it, and all other forces that contribute to a successful dive or climb. After reading this Spanish-translated book, readers can...

How does a gas change to a liquid? Through condensation! Condensation is the liquid that appears on your bathroom mirror after a hot shower. It is the big gray clouds in the sky just before a rain. In this book, learn all about condensation and how it happens.

Readers won't have to disassemble their favorite toys to discover what makes them work. This Spanish-translated book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

How does a liquid become a gas? Through evaporation! Evaporation helps make puddles disappear after it rains. In this Spanish-translated book, learn all about evaporation and how it happens.

What continues to expand to take up all the space it can? Gases! Gas is a state of matter, like a liquid or a solid. But it has properties that are quite different. In this Spanish-translated book, read all about the differences and what makes a gas a gas.