PAIREDREADPOWERWINDInformationalTextbyAnnWeilASolarHouseSTRATEGIES&SKILLSAPhotographyCredit:CoverRichardNowitz/NationalGeographicSociety/CORBIS**Thetotalwordcountisbasedonwordsintherunningtextandheadingsonly.Numeralsandwordsincaptions,labels,diagrams,charts,andsidebarsarenotincluded.ComprehensionStrategy:RereadSkill:Author’sPurposePhonicsCVCeSyllablesVocabularyStrategyParagraphCluesVocabularyelectricity,energy,flows,haul,power,silent,solar,undergroundContentStandardsSciencePhysicalScienceWordcount:763**Copyright©TheMcGraw-HillCompanies,Inc.Allrightsreserved.Nopartofthispublicationmaybereproducedordistributedinanyformorbyanymeans,orstoredinadatabaseorretrievalsystem,withoutthepriorwrittenconsentofTheMcGraw-HillCompanies,Inc.,including,butnotlimitedto,networkstorageortransmission,orbroadcastfordistancelearning.Sendallinquiriesto:McGraw-HillEducationTwoPennPlazaNewYork,NewYork10121ISBN:978-0-02-118768-3MHID:0-02-118768-1PrintedintheUnitedStates.12345678DOC171615141312POWERWINDPAIREDREADChapter1WhatIsWind?....................2Chapter2Windmills.........................4Chapter3WindmillstoWindFarms...........8Chapter4BlowingintheWind..............12RespondtoReading...............15ASolarHouse.............16Glossary/Index....................19FocusonScience...........20byAnnWeilEssentialQuestionHowdoweuseenergy?GenreInformationalTextYoucan’tseethewind,butyoucanseewhatitcando.Thewindcanblowaleafoffatreeorkeepakiteinthesky.Itcanpushasailboat.Peoplehavebeenusingwindpowerforthousandsofyears.Theyhaveusedittosail.SailboatsmovedalongtheNileRiverinancientEgypt.Later,peoplesailedfromEuropetotheAmericas.Someevensailedaroundtheworld.Themainsailcapturesmostofthewindpowerneededtomovetheboat.CHAPTER1WHATISWIND?Bettmann/CORBIS2Whatiswind?Windismovingair.Windhaskineticenergy.Thisisaforcethatmovesthings.Windgetsthisenergyfromthesun.Thesunwarmstheair.Thewarmairrises.Thencoolairmovesintotakeitsplace.Thismovingairisthewind.Thesunwarmsairoverlandmorequicklythanitwarmsairoverwater.Coolair...
