Escalators
By: Kelli Hicks ; edited by Jill Sherman
Series: How it works; How it works (Rourke Educational Media)
Published: 2015
Language: eng
Number of pages: 24
ISBN-13: 9781627176477; 9781627177696; 9781627178891
Subjects: Juvenile literature; Escalators; Conveying machinery
Description: "An escalator is moving staircase with steps that go up or down. This book discusses how an escalator is based off a conveyor system, moving objects up and down using gears. This form of transportation has made it more convenient to go from one floor to another without walking up flights of stairs. So, next time you have a chance to ride an escalator, hold on to the handrails and get a free moving staircase ride! This book will allow students to analyze data to determine if a design solution works as intended to change the speed or direction of an object with a push or a pull"--Page 4 of cover.
Notes: Includes bibliographical references (page 24) and index.
Table of contents: title: Going up?; title: Magic stairway; title: Conveying a good idea; title: Photo glossary.