Machines Q & A
By: Janice Parker
Series: Science discovery
Publisher: AV2 by Weigl
Published: 2014
Place of publication: New York
Language: eng
Number of pages: 48
ISBN-13: 9781621274162; 9781621274223
Subjects: Children's questions and answers; Juvenile literature; Machinery
Other titles: Machines questions & answers; Manchines questions and answers
Work titles: Machines
Notes: Originally published as Machines. New York : Weigl Publishers, 2009.

Includes index.

4-6.
Table of contents: title: What are machines?; title: How do machines help people at home?; title: How do refrigerators keep food cold?; title: How do digital cameras work?; title: How do video games work?; title: How do machines keep people safe?; title: How do machines help people work?; title: How do metal detectors work?; title: How does an elevator work?; title: What do generators do?; title: How is remote control used?; title: How do robots take jobs away from people?; title: How do computers help people work faster?; title: How do machines move people?; title: What is the difference between a gasoline engine and a diesel engine?; title: What is a jet engine?; title: How do machines hurt the environment?; title: What impact do cars have on the environment?; title: How do machines keep people healthy?; title: How do people take photographs of bones?; title: Careers with machines; title: Young scientists at work; title: Take a machines survey.