1、Dan McCoy/Rainbowi-01-LBD-861743 8/19/04 8:06 PM Page iHuman BodySystemsParts of several human bodysystems are shown here.Although each system has adifferent role,they functiontogether to maintain homeo-stasis.A human needs all systems operating together inorder to survive.Send all inquiries to:Glen
2、coe/McGraw-Hill8787 Orion PlaceColumbus,OH 43240-4027ISBN:0-07-861743-XPrinted in the United States of America.2 3 4 5 6 7 8 9 10 027/055 09 08 07 06 05 04Copyright 2005 by The McGraw-Hill Companies,Inc.All rights reserved.Except as permitted underthe United States Copyright Act,no part of this publ
3、ication may be reproduced or distributed in anyform or by any means,or stored in a database or retrieval system,without prior written permission of the publisher.The National Geographic features were designed and developed by the National Geographic SocietysEducation Division.Copyright National Geog
4、raphic Society.The name“National Geographic Society”and the Yellow Border Rectangle are trademarks of the Society,and their use,without prior writtenpermission,is strictly prohibited.The“Science and Society”and the“Science and History”features that appear in this book weredesigned and developed by T
5、IME School Publishing,a division of TIME Magazine.TIME and the redborder are trademarks of Time Inc.All rights reserved.Dan McCoy/Rainbowi-01-LBD-861743 8/19/04 8:06 PM Page iiCONTENTConnie Rizzo,MD,PhDDepartment of Science/MathMarymount Manhattan CollegeNew York,NYMATHMichael Hopper,DEngManager of
6、Aircraft Certification L-3 CommunicationsGreenville,TXTeri Willard,EdDMathematics Curriculum WriterBelgrade,MTREADINGElizabeth BabichSpecial Education TeacherMashpee Public SchoolsMashpee,MASAFETYAileen Duc,PhDScience 8 TeacherHendrick Middle School,Plano ISDPlano,TXSandra West,PhDDepartment of Biol
7、ogyTexas State University-San MarcosSan Marcos,TXACTIVITY TESTERS Nerma Coats HendersonPickerington Lakeview Jr.HighSchoolPickerington,OHMary Helen Mariscal-CholkaWilliam D.Slider Middle SchoolEl Paso,TXScience Kit and BorealLaboratoriesTonawanda,NYDiiiAuthorsSeries ConsultantsMaureen BarrettThomas
8、E.Harrington MiddleSchoolMt.Laurel,NJCory FishBurkholder Middle SchoolHenderson,NVAmy MorganBerry Middle School Hoover,ALDee StoutPenn State UniversityUniversity Park,PADarcy Vetro-RavndalHillsborough High SchoolTampa,FLSeries ReviewersEducation DivisionWashington,D.C.Edward OrtlebScience Consultant
9、St.Louis,MODinah ZikeEducational ConsultantDinah-Might Activities,Inc.San Antonio,TXi-01-LBD-861743 8/19/04 8:06 PM Page iiiWhy do I need my science book?Have you ever been in class andnot understood all of what waspresented?Or,you understoodeverything in class,but at home,got stuck on how to answer
10、 aquestion?Maybe you just wondered when you were evergoing to use this stuff?These next few pages are designed to help you understand everything your science book can be used for.besides a paperweight!Before You ReadChapter OpenerScience is occurring all around you,and the opening photo of each chap
11、ter will preview thescience you will be learning about.The ChapterPreview will give you an idea of what you will belearning about,and you can try the Launch Lab tohelp get your brain headed in the right direction.TheFoldables exercise is a fun way to keep you organized.Section OpenerChapters are div
12、ided into two to foursections.The As You Read in the margin of the firstpage of each section will let you know what is mostimportant in the section.It is divided into four parts.What Youll Learn will tell you the major topics youwill be covering.Why Its Important will remind youwhy you are studying
13、this in the first place!TheReview Vocabulary word is a word you already know,either from your science studies or your prior knowl-edge.The New Vocabulary words are words that youneed to learn to understand this section.These wordswill be in boldfaced print and highlighted in thesection.Make a note t
14、o yourself to recognize thesewords as you are reading the section.(bkgd)John Evans,(inset)Dan McCoy/Rainbowi-01-LBD-861743 8/19/04 8:06 PM Page ivAs You ReadHeadingsEach section has a titlein large red letters,and is furtherdivided into blue titles andsmall red titles at the begin-nings of some para
15、graphs.To help you study,make anoutline of the headings andsubheadings.MarginsIn the margins ofyour text,you will find many helpfulresources.The Science Online exercises andIntegrate activities help you explore the topicsyou are studying.MiniLabs reinforce the sci-ence concepts you have learned.Buil
16、ding SkillsYou also will find anApplying Math or Applying Science activityin each chapter.This gives you extra prac-tice using your new knowledge,and helpsprepare you for standardized tests.Student ResourcesAt the end of the bookyou will find Student Resources to help youthroughout your studies.These includeScience,Technology,and Math Skill Hand-books,an English/Spanish Glossary,and anIndex.Also,use your Foldables as a resource.It will help you organize information,andreview before a test.In Cla
