Screws

A foundational look at screws, explaining how these simple machines work and describing some common examples, such as jar lids, that have been used throughout history. Part of the Simple Machines series What are simple machines? Young learners find out about the six simple machines in this series. They are presented with the basic physics concepts behind simple machines, the ways simple machines make work easier, and the uses of simple machines today. Ages 6 - 10 Nonfiction, 24 pages, 2011 ISBN 978-1-60818-011-0