Unit4Astronomy.ppt

1、Warming up and Reading,Warming up and Reading,Unit 4 Astronomy: the science of the stars,Shenzhou,Oct. 16, 2003,a Chinese,male,an astronaut,Lead-in: Brainstorming,Yang Liwei,A picture taken by Yang Liwei,Neil Armstrong,An American,The first person who visited the moon,A British,Black hole,Brief Hist

2、ory of Time,Stephen Hawking,Warming Up,Do you know how many planets circle around the sun in solar system？,The Solar System,地球 _ 木星 _ 火星 _ 水星 _,E .海王星 _ F. 土星 _ G. 天王星 _ H. 金星 _,Earth,Jupiter,Mars,Mercury,Neptune,Saturn,Uranus,Venus,On which planet are there lives at present ?,Earth,Pre-reading,Wher

3、e do we come from? Or we can say: Who are our ancestors? Do you know any ancient story about the beginning of the universe? Discuss with your partner.,Pangu separates the sky from the earth,Nuwa makes human beings,God created the world in seven days,(上帝创世说),Reading,How Life Began on the Earth,Task o

4、ne: read the passage quickly and match the main idea for each paragraph,Paragraph 1: Paragraph 2: Paragraph 3: Paragraph 4: Paragraph 5:,A. How human appeared and what effects they have caused to the earth. B. Water is very important for life on the earth. C. How the earth formed. D. How the plants

5、and animals on the earth developed. E. It is widely accepted that the universe began with a“Big Bang”,Task two: listen to the tape and then make choices.,1.Why was the earth different from other planets? 2.Why was life able to develop on the earth but not on other planets? 3.Why was it necessary for

6、 plants to grow before animals? 4.What problem is caused by human being?,Why was the earth different from other planets? A it produced a lot of heat. B.The water remained. C Water disappeared. D.It was the oldest planet.,Why was life able to develop on the earth but not on other planets? A The earth

7、 had a solid shape. B. The earth did not have harmful gases in its atmosphere. C The water stayed on the earth but not on other planets. D.The earth was not too hot and not too cold.,ks5u精品课件,Why was it necessary for plants to grow before animals?,A Animals needed plants to protect them from the sun

8、. B Plants provided oxygen for animals to breathe. C Animals could hide from hunters in forest. D It was easier for plants to grow.,What problem is caused by human being?,A They exist everywhere on the earth. B They cause global warming. C They find new methods of growing crops. D They enjoy hunting

9、 and fishing.,ks5u精品课件,Discussion,Do people take good care of the earth? What are they doing to the planet?,What will happen when we put too much CO2 into the atmosphere?,greenhouse effect,global warming,animals will die out,plants will die out,There will be no life on the earth,Discussion,rise of the sea level,icebergs and glaciers melt,We have only one earth!,We should take care o