人教新课标高中英语必修三Unit4-Astronomy-全单元课件[1]1.ppt

人教新课标高中英语必修三Unit4-Astronomy-全单元课件[1]1.ppt

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Unit4

Astronomy:

thescienceofthestars;HowLifeBeganontheEarth;Science

Subjects;Astronomyisthescientificstudyoftheuniverseandtheheavenbodies(suchasthesun,themoon,andstars),gas,anddustwithinit.;TheBigBang;TheSolarsystem;;WaterAirLife

;Acloudofdust

Combineintoasolidball

Explode…withfirerock

(produceH2O,CO2,O2,N2,othergases);Thedevelopmentoflife;Acloudofdust→asolidball→presenceofwater→onthewater→shellfishotherfish →plantsbegintogrowondryland→insectsandamphibiansappear→retilesappear→dinosaursappear→mammalsappear;Goodmorning/afternoon,IamDr….I’mgreatlyhonoredtobeheretogiveyouaspeechaboutthedevelopmentoflife.…;Whatproblemshavebeencausedbyhumanstotheearth?;Howtoprotecttheearthandmakeitabetterplacetoliveon?;DesignanactivityonEarthDay;Homework

SearchtheInternetfortheinformationofthedevelopmentoflife.

2.Readandlearngoodwords,phrasesorstructuresfromReading.;Period2

UsingLanguage

ReadingTask;thenaturalforcethatcausesanobjecttomovetowardthecentreoftheearth.;IsaacNewton;

Iheardabouthowthreemenmademistakeswhentheytriedtodescribegravity.

Iheardabouthowthreemenwantedtofindoutaboutthebeginningoftheuniverse.

Iheardabouthowtheideaofgravityhasdevelopedoveralongperiodoftime.

Iheardaboutthreescientistsandtheirwork.;;Avisittothemoon;Onthemoon;LastmonthIvisitedthemoonwithmyfriend.Beforeweleft,Iwastoldtheforceofg_____wouldchangethreetimesonourjourney.Thenwetookoff.Aswelefttheearth,Ibecameveryh_______.Graduallytheweightl_______.WhenIwasinspace,itd__________.Wef_______weightlesslyinthecabinandIc________.WhenIwasonthemoon,Iwassurprisedtofindoutevenwalkingneedsl

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