| Description |
32 pages ; color illustrations ; 29 cm. |
| Series |
Get to know simple machines |
|
Get to know simple machines.
|
| Note |
Includes index. |
| Contents |
Wheels and axles -- The basic design -- How it works -- Wheel and axle in action -- Moving loads -- A multi-axle model -- A lifting machine -- Build a lifting machine -- Wheels and axles in action -- The fan in action -- Fighting friction -- How friction happens -- The wheel and axle as part of a complex machine -- Glossary. |
| Summary |
All people have jobs to do. Some jobs take a lot of energy. Simple machines help people get jobs done without working too hard. There are six kinds of simple machines: inclined planes, levers, pulleys, wedges, screws, and wheels and axles. |
| Study Program |
Accelerated Reader AR LG 4.7 0.5 130299. |
| Subject |
Wheels -- Juvenile literature.
|
|
Axles -- Juvenile literature.
|
|
Wheels.
|
|
Axles.
|
| ISBN |
9780778744887 paperback alkaline paper |
|
0778744884 paperback alkaline paper |
|
9780778744719 reinforced library binding alkaline paper |
|
077874471X reinforced library binding alkaline paper |
|
