De Medeiros, Michael.

Screws / Michael De Medeiros. - New York : AV2 by Weigl, 2013. - 24 p. : col. ill. ; 26 cm. - Simple machines . - Simple machines. .

Provides access to enhanced content that includes audio, video, web links, quizzes, activities, and a slide show. Includes index.

What is a screw? -- Understanding force -- Force over distance -- How screws work -- Overcoming friction -- Using screws -- Screws timeline -- What is a hydraulic engineer? -- The two basic machines -- Seven facts about screws -- Screws brain teasers -- Science in action.

"Explains what a screw is, how screws work, and includes examples of past and present uses."--Provided by publisher.

ISBN: 9781621274278 (lib. bdg.) 20.39

Source: Knowbuddy Resources

LCCN: 2012041024

Subjects--Topical Terms:
Screws--Juvenile literature.

Dewey Class. No.: 621.8/82