tailieunhanh - Ebook Physical science: Forces and Motion

(bq) Ebook Physical science: Forces and Motion helps you know How do balanced forces affect the motion of an object? Explain how the Moon’s gravitational pull can be observed on Earth; How is instantaneous speed different from average speed? It is necessary to have a frame of reference to describe motion. | Genre Comprehension Skill Text Features Science Content Nonfiction Predict Captions Charts Diagrams Glossary Forces and Motion Scott Foresman Science PEARSON Scott Foresman ISBN 0-328-14012-0 IB. -I Vocabulary acceleration force friction gravitational force inertia momentum speed velocity Illustrations Title Page 4 5 11 13 15 16 clint Hansen 1 6 Peter Bollinger Photographs Every effort has been made to secure permission and provide appropriate credit for photographic materiai. The publisher deeply regrets any omission and pledges to correct errors called to its attention in subsequent editions. Unless otherwise acknowledged all photographs are the property of Scott Foresman a division of Pearson Education. Photo locators demoted as follows Top T Center c Bottom B Left L Right R Background Bkgd . 2 Fabio Muzzi Age Fotostock 4 Be Herman Eisenbeiss Photo Researchers Inc. 7 Michael Newman PhotoEdit 8 cc Hackenberg Zefa Masterfile Corporation B Dr. Jeremy Burgess Photo Researchers Inc. 10 CL DK Images BL Getty Images 11 CR DK Images BR Getty Images 14 Lester Lefkowitz Corbis 1 8 Bettmann Corbis 1 9 David Woods Corbis 22 TR I Nigel J. Dennis Gallo Images Corbis BL w. Wisniewski Zefa Masterfile Corporation 23 Patrick Bennett Corbis ISBN 0-328-14012-0 Copyright Pearson Education Inc. All Rights Reserved. Printed in the United States of America. This publication is protected by Copyright and permission should be obtained from the publisher prior to any prohibited reproduction storage in a retrieval system or transmission in any form by any means electronic mechanical photocopying recording or likewise. For information regarding permissions write to Permissions Department Scott Foresman 1900 East Lake Avenue Glenview Illinois 60025. 2 345 678 9 10 V010 13 12 11 10 09 08 07 06 05 Forces and Motion by Marcia K. Miller what happens when forces act on objects Forces How con a big elephant balance on a small ball The elephant stays up because of forces .