1、Unit 4Astronomy:the science of the starsThe Solar system eight planets many comets other objects金星水星土星火星木星海王星天王星CometOver 70%of the earths surface is covered by waterThe first man to land on the moonNeil ArmstrongU.S.A.1969One small step for a man,one giant leap for mankind The manned spacecraftsShe
2、nzhou 5，6&7Total lunar eclipse(月全食）Total solar eclipse（日全食)Meteor rain（流星雨）The beginning of the universe Do you know each religion or culture has its own ideas about the beginning of the universe?Please give an example if you know.Legend V.SMythology(神话学）V.S ScienceLegend:Pangu creates the worldPang
3、u separates the sky from the earthHis whole body then turns into all kinds of things in the universe.Mythology:in Christian ReligionIn Bible,the world and the whole universe was created by the God.Then the god create the first man and the first woman Adam and Eve.Day 1-light and blackness Day 2-the
4、sky Day 3-seas,trees Day 4-stars,sun,moon Day 5-animals Day 6-the first man(Adam)Day 7Sabbath(安息日）The time table of the GodScience:The Big Bang（大爆炸）The universe began with a“Big Bang”Reading How Life Began on the EarthTask 1.Match and Scanning earth;human beingsplants and animals;theory;water;Para.1
5、Para.2Para.3Para.4Para.5Task 2 SkimmingMainBodyPara 1:Para 2:Para 3:Para 4:Para 5:The importance of water for life.A widely accepted theory aboutthe formation of the universe.The formation of the earth.The development of plants andanimals on the earth.The arrival of humans and theirimpact on the ear
6、th.Choose the best answer1.What made it possible for life to begin and develop on the earth according to the passage?A.Harmful gases B.Water C.Carbon dioxide D.Oxygen 2.Which of the following is NOT true about the dinosaurs?A.They produced their young by laying eggs.B.Some of them were very huge.C.T
7、hey produced their young form within their bodies.D.They once lived on the earth for millions of years.3.The word“multiply”(Line 4,the 4th paragraph)means _.A.乘以B.繁殖C.减少D.分解4.What is the main problem to be solved for life to continue on the earth?A.Food B.Water C.AIDS D.Global warming Task 3 Careful
8、 readingStage 1:The development of the earthStage 2:The development of life in waterStage 3:The development of life on landStage 4:The development of humansThe big banga cloud of dusta violent solid ball exploded with fire and rockproduced water vapour and gasesatmospherewater appearedCool downLife
9、began?Scan Para 3:Put them into right orderA.insects and amphibians appearB.reptiles appearC.shellfish and other fish appear D.dinosaurs appearE.small plants grow on the water F.plants begin to grow on dry landG.mammals(including humans)appear Answer:E CFABD GQ1:What problem are humans causing?putti
10、ng carbon dioxide into the atmospherethe earth may become too hotQ2:What happens when the earth becomes too hot?greenhouse effect and global warminggreenhouse effect and global warmingheat from the sun is trapped temperature risesgreenhouse effect and global warmingice in the North Pole melts sand s
11、tormClick to enjoy MTV:Earth Song Task 4 Post readingRead the text carefully and answer the following questions.1.Why was the earth different from the other planets?Because water remained on the earth.2.Why did the plants grow before the animals came?Because plants provided oxygen for animals to bre
12、athe.3.Why is it wrong to show films with dinosaurs and people together?Because dinosaurs died out long before human beings developed on the earth.4.There used to be nine planets in the solar system.Recently scientists have decided that one of them can no longer be considered a planet.Do you know th
13、e name of that planet?Do you know why they removed it?The name is Pluto.Scientists now think it is too small to be called a planet.5.What problem is caused by human beings?Human beings cause global warming.Task 5 Summary After the“Big Bang”,the earth was just a cloud of dust.It exploded loudly with
14、fire and rock,which were in time to produce the water vapour,nitrogen and other gases.Then small plants grew.They multiplied and filled the oceans and seas with oxygen.Many millions of years later the first green plants began to grow on land.When the plants grew into forests,reptiles appeared for th
15、e first time.They produced young generally by laying eggs.When dinosaurs disappeared,mammals became more important.Now small clever animals with feet and hands appeared and spread all over the world.As time goes on they covered the earth and they are putting too much carbon dioxide into the atmosphere,which prevents heat from escaping from the earth into space.Whether life will continue on earth for millions of years to come will depend on whether this problem can be solved.
