1. Unit 4 Astronomy: the science of the stars 树兰中学 Zhao Shuhui

2. 1.Who is the first Chinese astronaut to go into space? ___________ 2.What was the date when he circled the earth in space? A) November 15, 2003 B) October 15, 2003 C) September 17, 2004 D) December 17, 2004 3.Which country first sent people up to the space, the USA or the Soviet Union? 4.So far, how many countries have succeeded in sending people up to space? _______ Test your common knowledge: Yang liwei three

3. The Solar system eight planets many comets other objects （太阳系）

5. THE SOLAR SYSTEM Can you name each planet correctly? A. 水星 ________ B. 金星 _______ C. 地球 ______ D. 火星 ________ E. 木星 ________ F. 土星 _______ G. 天王 ________ H. 海王 ________ Earth Jupiter Mars Mercury Neptune Saturn Uranus Venus

6. Match the planets 水星 金星 地球 火星 木星 土星 天王星 海王星 1.Uranus 2.Jupiter 3.Mercury 4.Mars 5.Venus 6.Saturn 7.Neptune 8.Earth

9. Period 1 How Life Began on the Earth

10. Fast reading 1.When did the dust settled into a solid globe? 2.Why did animals first appear in the seas? 3.Why were mammals different from other animals?

11. 1.When did the dust settled into a solid globe? It was between 4.5 and 3.8 billion years ago.

12. 2.Why did life first appear in the seas? Because water allowed the earth to dissolve harmful gases into the oceans and seas.

13. 3. Why were mammals different from other animals? Because they give birth to young baby animals and produced milk to feed them.

14. What is the passage about? It is about the developing of the earth.

15. Careful reading How did water come into being on the earth? Read paragraph 2

16. How did water come into being on the earth? The explosion of the earth produced water vapor, which turned into water when the earth cooled down.

17. 7. reptiles(on land) 8. 9. 1. small plants in water 2.2. 3. green plants on land 4. insects(on land) 5. 6. forests 10. small clever animals with hands and feet 11. Listen paragraph 3to 5 carefully and finish the following form. How life began on the earth shellfish and all sorts of fish dinosaurs(on land) mammals(on land) human amphibians (on land and in water)

18. 1.Why was life able to develop on the earth but not on other planets ? A. The earth had a solid shape. B. The earth was not too hot and not too cold. C. The earth didn’t have harmful gases in its atmosphere. D. The water stayed on the earth but not on other planets. Make choices! D

19. 2. Why was it necessary for plants to grow before animals ? A. Animals needed plants to protect them from the sun. B. Animals could hide from hunters in forests. C. It was easier for plants to grow. D. Plants provided oxygen for animals to breathe. Make choices ! D

20. 3. What problem is caused by human beings ? A. They cause global warming. B. They exist everywhere on the earth. C. They find new methods of growing crops. D. They enjoy hunting and fishing. A Make choices !

21. After the,the earth. “Big Bang” was full of water

22. ________ made it possible for life to begin to develop. Water

23. Plants encouraged the development of_____________________________. early shellfish and all sorts of fish

24. Later ______________appeared. land animals

25. When plants grew into forests, _________appears for the first time reptiles

26. Some huge animals,called, __________developed. dinosaurs

27. When ________disappeared, _________became more important. dinosaurs mammals

28. They were different because they____________________________ _________________ produce their young from within their bodies.

29. ___________________, with hands and feet,appeared. Small clever animals

30. As time went by, they covered the earth and have become the most important animals on the planet.

31. Put the order of development of life into a timeline 1.Insects and amphibians appeared. 3.The earth became a solid ball. 5.Reptiles appeared. 7.The earth was a cloud of dust. 9.Shellfish and other fish appeared. 11.Clever animals with hands and feet appeared. 2.Dinosaurs appeared 4.Small plants grew on the water. 6.Plants began to grow on dry land. 8.Water appeared on the earth. 10.The universe began with a “Big Bang”. 12.Mammals appeared 8 3 1 2 4 5 6 79 10 11 12

32. Why is it wrong in the films and stories to show dinosaurs and people together?

33. Homework 1.Search the Internet for the information of the development of life. 2. According to the timeline, try to write a short passage.