Simple slopes
By: Andrew Dunn ; illustrated by Ed Carr.
Contributors: Carr, Ed, ill.
Series: How things work
Publisher: Thomson Learning
Published: 1993
Place of publication: New York
Language: eng
Number of pages: 32
Subjects: Simple machines -- Juvenile literature.; Inclined planes -- Juvenile literature.; Slopes (Soil mechanics) -- Juvenile literature.; Inclined planes.; Simple machines.
Description: Describes how simple machines utilize the principle of the slope or incline to plow fields, unlock doors, and lift heavy loads.
Notes: Includes bibliographical references (p. 31) and index.