1、Program AuthorsDr.Dorothy J.T.TermanDr.Jay K.HackettScience Curriculum Development ConsultantProfessor Emeritus of Earth SciencesFormer K-12 Science and Mathematics CoordinatorIrvine Unified School District,CAUniversity of Northern ColoradoGreeley,COIrvine,CADr.Richard H.MoyerDr.Gerald F.WheelerProf
2、essor of Science Education andExecutive DirectorNatural SciencesNational Science Teachers AssociationUniversity of Michigan-DearbornBank Street College of EducationDearborn,MINew York,NYDr.JoAnne VasquezContributing AuthorsElementary Science Education ConsultantNSTA Past PresidentDr.Sally RideMember
3、,National Science BoardSally Ride Scienceand NASA Education BoardSan Diego,CAMulugheta Teferi,M.A.Lucille Villegas Barrera,M.Ed.Principal,Gateway Middle SchoolElementary Science SupervisorCenter of Math,Science,and TechnologyHouston Independent School DistrictSt.Louis Public SchoolsHouston,TXSt.Loui
4、s,MOAmerican MuseumDinah Zike,M.Ed.of Natural HistoryDinah Might Adventures LPNew York,NYSan Antonio,TXContributing WriterKathryn LeRoy,M.S.Executive DirectorEllen C.Grace,M.S.Division of Mathematics and Science EducationConsultantMiami-Dade County Public SchoolsAlbuquerque,NMMiami,FLStudents with p
5、rint disabilities may be eligibleobtaincesieai version of the pupiedtion of thiseamnins toush listening textbook.Please call Recording for the Blind Dyslexic at 1-800-221-4792 for complete information.The McGraw-Hill CompaniesMcMacmillan/McGraw-HillHCopyright 2010 by The McGraw-Hill Companies,Inc.Al
6、l rights reserved.Except as permitted under the United States Copyright Act,no part of thispublication may be reproduced or distributed in any form or by any means,orstored in a database or retrieval system,without prior permission of the publisher.Send all inquiries to:Macmillan/McGraw-Hill8787 Orion PlaceColumbus,OH 43240-40271SBN:978-0-02-287747-7MHID:0-02-287747-9Printed in the United States of America.123456789(027/043)131211100908i
