levers

"How do the Imagineers make elephants fly? Actually, it's simple machines, that is! Here, the Imagineers give a new look at how levers and pulleys were utilized to create attractions such as Dumbo the Flying Elephant and Soarin' Over California. See how levers and pulleys make work easier by either multiplying or redirecting the effort we put into them. Identify the two forces involved in using a machine and learn to calculate mechanical advantage, given effort and resistance"--Container.

"Is it easier to move ice with a lever or a screw? Readers will see how a group of kids compares two simple machines and decides which one does a better job at moving the ice."--Provide by publisher.

Simple text and photographs introduce readers to how levers work to shift the angle of force and make work easier.

"A hands-on approach introduces young scientists to the lever. Science theory and practical, fun projects teach the physics and the technology behind this simple machine. Important science curriculum is explained through historical and contemporary examples of levers. Step-by-step projects range from the simple to the more challenging"--Provided by publisher.

"A foundational look at levers, explaining how these simple machines work and describing some common examples, such as crowbars, that have been used throughout history"--Provided by publisher.

Text and photographs showcase levers, from how they work and their various uses in daily life, to the three different types of levers.

Describes what a lever is and how it can be used and provides three experiments using a lever.

A simple explanation of how a lever works.

Describes work, machines, levers, and force in everyday surroundings, and presents experiments that explain how they work.

Describes how levers and pulleys make lifting and moving things easier.