必修3第四单元课件.ppt

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1、Astronomy: the science of the stars Unit 4 Warming up Do you know how many planets circle around the sun in our solar system? In our solar system eight planets circle around the sun. 1111 THE SOLAR SYSTEM Can you name each planet correctly using the letters given in the table below? A.地球 _ B. 木星 _ C

2、.火星 _ D.水星 _ E. 海王星 _ F. 冥王星 _ G. 土星 _ H. 天王星 Uranus_ I. 金星 Venus_ Earth Jupiter Mars Mercury Neptune Pluto(x) Saturn My Very Excellent Mother Just Sent Us Nine Pizzas How to remember the order of the eight planets around the sun? Earth Jupiter MarsMercury Neptune SaturnUranus Venus Each religion an

3、d culture has its own ideas about how life began on 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。 Chinese Legends Pangu separates the sky from the earth. Legend: The Goddes

4、s Nuwa mended the heaven and created human beings from the clay(粘土). Religious Belief According to Bible, God created the world in 7 days. Day 1: God created Day and Night. Day 2: God created sky. Day 3: God created dry landthe earth, and seas. Day 4:God created two great lights (the sun, the moon)

5、and stars. Day 5: God created living things in the air and sea. Day 6: God created the land animals and the first man. Day 7: God rested and called this day Holy. How Life Began on the Earth Listen and match 1. Listen to the passage and match each paragraph with its main idea. 2.Tell the main idea o

6、f the text in one sentence. Paragraph 1 Paragraph 2 Paragraph 3 Paragraph 4 Paragraph 5 A. How humans 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 and animals on the earth developed. E. It is w

7、idely accepted that the universe began with a “Big Bang”. Paragraph 1 Paragraph 2 Paragraph 3 Paragraph 4 Paragraph 5 A.How humans 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 and animals on th

8、e earth developed. E. It is widely accepted that the universe began with a “Big Bang”. The text mainly tells us the formation of the earth and the development of life on it. Careful reading Read the passage carefully and answer the following questions 1. What was there on the earth before life could

9、 begin? Water vapour, carbon dioxide, oxygen, nitrogen and other gases. 2. Why do scientists think there has never been life on the moon? 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

10、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 oxygen. 5. Why were mammals different from other animals? They were different because they produced their young from within their bodies. Detailed Reading The development of the earth Stage 1: The development of the earth 1) After the Big Bang, what happened? a cloud of dust a violent solid globe exploded with fire and rock produced carbon, nitrogen ,water vapour only if we help shall all be saved! Thank you!

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