人教新课标必修三Unit4AstronomyReading阅读.pptx

进化进化(MTV).flv1 Do you know which one is not a mammal哺乳动物哺乳动物?2 Snakes and tortoises belong to _,while frogs and toads belong to_.A amphibians 两栖动物两栖动物 B reptiles爬行动物爬行动物 koalaWater Air Life?3 How Life Began on the Earth：Which came first?How Life Began on the EarthReading.mp3Paragraph 1:Paragraph 2:Paragraph 3:Paragraph 4:Paragraph 5:A widely accepted theory about the formation of the universe The formation of the earth The importance of water for life The development of plants and animals on the earth The arrival of humans and their impact on the earthMatch the main idea of each paragraph.Fast reading True or false 1.According to a widely accepted theory,the universe began withbegan with a“Big Bang”,after which the earth was still a cloud of dust a cloud of dust for several billionyears.2.As the earth cooled down,water began to appear on its surface.3.Water allowed allowed the earththe earth to to dissolvedissolve harmful gases and acids,and it only appeared on the earth.4.As for mammals,they produced young generally by laying eggs.5.Clever animals with hands and feet,in their turn in their turn,are protecting the earth well instead of other less important animals.News conferencePlace：News conference 记者招待会记者招待会Event：Ten astronomers answer questionsTopic：How life began on the earthRules:1.Girl group and Boy group 2.Five students of each group come to the front to compete for answering questions made by the rest students.Scores:Five scores each time Gift 1 Gift 2 1 What happened after Big Bang?2 What happened between 4.5 and 3.8 billion years ago?3 What were towere to make the earths atmosphereatmosphere?4 Why water was important for making it possible for life to develop?5 Did plants appear first or animals come first?And why?6Which turned up first:reptiles,mammals or amphibians?7 Whats the difference between mammals and reptiles?8 Did air appear earlier than water and life?9 What are human beings doing at present?Gift 1 Gift 2 Gift 1 Gift 2 Cheer up!All of you have done a good job!We all know our earth is changing worse and worse,then what should we do to protect it?Now lets share Michael Jacksons feelings toward this problem!Earth songWrite a composition about protecting our earth.Astronomy is the scientific study of the universe and the heaven bodies(such as the sun,the earth,the moon),gas,and dust within it.天文学天文学是对是对宇宙宇宙及其内部的及其内部的天体天体、气体和尘埃、气体和尘埃所做的科学研究。所做的科学研究。