byDianeHayesbyDianeHayesCover,©TIMFITZHARRIS/MindenPictures;p.3,©LarryFisher/Masterfile;p.6,©ChinchGryniewicz;Ecoscene/CORBIS;p.7,p.13,©Corbis;p.8,p.9,©MichaelT.Sedam/CORBIS;p.10–11,©COLINMONTEATH/HEDGEHOGHOUSE/MindenPictures;p.12,NationalParkService.Cartography,p.4,p.5,p.14,JoeLeMonnierCopyright©byHarcourt,Inc.Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformorbyanymeans,electronicormechanical,includingphotocopy,recording,oranyinformationstorageandretrievalsystem,withoutpermissioninwritingfromthepublisher.RequestsforpermissiontomakecopiesofanypartoftheworkshouldbeaddressedtoSchoolPermissionsandCopyrights,Harcourt,Inc.,6277SeaHarborDrive,Orlando,Florida32887-6777.Fax:407-345-2418.HARCOURTandtheHarcourtLogoaretrademarksofHarcourt,Inc.,registeredintheUnitedStatesofAmericaand/orotherjurisdictions.PrintedinChinaISBN10:0-15-351527-9ISBN13:978-0-15-351527-9OrderingOptionsISBN10:0-15-351214-8(Grade4AdvancedCollection)ISBN13:978-0-15-351214-8(Grade4AdvancedCollection)ISBN10:0-15-358117-4(packageof5)ISBN13:978-0-15-358117-5(packageof5)Ifyouhavereceivedthesematerialsasexaminationcopiesfreeofcharge,HarcourtSchoolPublishersretainstitletothematerialsandtheymaynotberesold.Resaleofexaminationcopiesisstrictlyprohibitedandisillegal.Possessionofthispublicationinprintformatdoesnotentitleuserstoconvertthispublication,oranyportionofit,intoelectronicformat.1234567891098512111009080706Whenviewedfromhighabove,thesurfaceoftheEarthlooksrathersimple.Itseemstobemadeupofhugeoceans,largecontinents,andalotoficeneartheNorthandSouthPoles.Acloserlookatthesur-face,though,revealstheEarth’smanyuniqueandbeautifullandforms.Therearebroadplainsandprairies.Therearemanycreeks,rivers,andstreams.Thereareponds,lakes,andseas.Therearerollinghillsandsoaringmountains.Whatonemightnotnotice,however,arethemanyplateausonEarth.Plateausarelarge,raisedareasofland.Theyhaveahighelevation.Thismeansthattheyarehighup,butunlikemountains,plateausareusuallyflatontop.Plateauscanbesomeofthel...
