rotational motion

Explains the physical forces that determine whether and how toys spin. Contains instructions for a hands-on experiment and includes color illustrations and a glossary.

Readers will love learning about the eight phases of the moon and why even though the sun always lights the moon we can t always see it!.

Features two groups of seventh-grade students, who discover that common household disk-shaped objects can be transformed into spinning objects that can be manipulated to increase the duration of their spinning. Indicates ways to engage students in science and provides material for discussion about how teachers and students interact, ways student data can be presented and assessed, how students develop concepts, and how an investigation can address different learning ability levels.

Bill Nye the Science Guy answers questions about spinning things, and conducts an experiment that demonstrates the effect of spinning on a design.

Examines the natural forces of gravity and friction that are constantly at work on Earth. Demonstrates the principles and forces that govern moving objects and how we use them to our advantage. Part 1 presents the law of universal gravitation and the forces of static and kinetic friction. Part 2 introduces Sir Isaac Newton's three laws of motion and the principles and forces that govern moving objects. Part 3 examines some of the different ways time can be measured, including sidereal and solar time. This section also examines why Earth has days and nights. Part 4 investigates jet engines, wing design, and special building materials that allow airplanes to take to the skies.

A simple introduction to circular movement and the forces that affect it.

Helps middle school children learn about the forces of motion through amusement park thrill rides, explaining how roller coasters, bumper cars, and other rides work.

Introduces the physics of spinning, discussing such items as yo-yos, tops, and pinwheels; presents several experiments; and features humorous cartoon illustrations.

Simple text and photographs show objects which move in circles.