1、Intensive ReadingIntensive ReadingWarming upWhat are the names of the eight planets that circle our sun?Prediction Look at the picture.Do you know the topic of this unit?海洋里的细胞开始分裂登陆登陆爬行动物恐龙恐龙Mammals人类的兴起 Do you know what it was like before life appeared on earth?可以演化成低级生命的小液滴;水泡状的太空原始生命体It was full
2、 of water.medicinebiology chemistry astronomy physics mathematicsgeophysicsgeology physics biochemistrybiology chemistry1.What do we mean when we say we are studying a subject scientifically?Or whats the correct attitude towards science?We should be objective,not superstitious.2.Whats the correct wa
3、y to prove a scientific idea?We should design experiments to test it for several times.Then we can analyze the results and draw a conclusion at last.3.What are the most important skills we need to be real scientists?Careful,objective and logical,draw conclusions from the experiments and not impose c
4、onclusions on the data.(imposeon 把强加于)1.The origin of life on earth is a question that interests astronomers.What do you know about it?How old is the universe?(several billion years ago)How old is the Earth?(between 4.5 and 3.8 million years ago)Which were the first creatures or plants on Earth?.Pre
5、-reading2.Each religion and culture has its own ideas about how life began on earth.What do you know?In China,we all know that Panguseparates the sky from the earth.Pangu separates the sky from the earth中国神话传说中有盘古开天地的说法。巨人盘古用一把利斧劈开混沌,将天地分开。死后,他的气息化成风和云,声音变成轰轰的雷声,左眼化为太阳,右眼化为月亮,手足与四肢变成大地的四极与五方的名山,血液化成
6、江河,筋脉铺成道路,肌肉形成田地,须发成为星星,牙齿和骨骼化为金属、珍珠、玉石,汗水成为滋润万物生长的甘霖和雨露。Other legends about the beginning of universeThe Biblical AccountDay 1:God spoke and separated light from darkness creating Day and Night Day 2:God spoke and separated the water creating sky and ocean Day 3:God spoke and created dry land Day 4
7、:God spoke and created the sun,moon and stars Day 5:God spoke and created living creatures in the air and sea Day 6:God spoke and created the land animals and man Day 7:God rested and blessed this day calling it Holy India Brahma is the god first represented in the Hindu Triad.He is the creator of t
8、he universe and all living beings are said to have evolved from him.Big BangGasNew starsDying starsremnants平面图太阳系地球大气Scanning1.What was there on the earth before life could begin?Water vapour,carbon dioxide,oxygen,nitrogen and other gases.2.Why do scientists think there has never been life on the mo
9、on?Because there is no water on the moon.3.Why did animals first appear in the seas?Because water allowed the earth to dissolve harmful gases into the oceans and seas.4.Why did green plants help life to develop?Because green plants can take carbon dioxide from the atmosphere and fill the air with ox
10、ygen.5.Why were mammals different from other animals?They were different because they produced their young from within their bodies.Reading1.Read the passage carefully and analyse its structure.Write down the main idea for each paragraph.A widely accepted theory about the formation of the universeTh
11、e formation of the earthThe importance of water for lifeThe development of plants and animals on the earthThe arrival of humans and their impact on the earthPara.1Para.2Para.3Para.4Para.5Reading and answer the following questions.1.Why was the earth different from other planets?The water remained.2.
12、Why did the plants grow before the animals came?Because plants provide oxygen for animals to breathe.3.Why is it wrong in films and stories to show dinosaurs and people together?Because dinosaurs died out long before human beings developed on the earth.4.Why do you think that humans are the cleveres
13、t animals on the earth?They are the cleverest animals because they have larger brains than any other creature on the earth so far.5.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 the name of that pl
14、anet?Do you know why they removed it?Pluto.Scientists now think it is too small to be called a planet.6.What problem is caused by human beings?They cause global warming.Finish the following form.1.small plants 2.in water2.shellfish and all sorts of fish3.green plants on land4.insects(on land)5.amphibian(on land and in water)6.forests7.reptiles(on land)8.dinosaurs(on land)9.mammals(on land)
