Screws /
Michael De Medeiros.
- New York, NY : Weigl Publishers, c2010.
- 24 p. : col. ill. ; 26 cm.
- Science matters .
Includes index.
What is a screw? -- Sharp threads -- Pushing ahead -- Screwy gears -- Gaining an advantage -- Nuts and bolts -- Drilling bits -- Early screws -- Screws on the Web -- Science in action -- What have you learned?
The screw is a simple machine that helps make work easier. This book discusses what a screw is, where it can be found, and how it is used. Features visual diagrams and hands-on experiments.