精选课件必修5第一单元Warming up.ppt

Unit 1 Great Scientists Who discovered that objects in water are lifted up by a force that helps them float? Do you know? 发明蒸汽机的并不是瓦特，他是改进纽科门的蒸气机并发明出双动作，使世界进入“蒸气时代”的，使他成为第一次工业革命中的名气最大的发明家。 仁慈是他的特征之一。 1865年，修士孟德尔在一个会议上报告了他通过长达八年的实验研究和规律了。他所统计的多达两万一千多件样本的实验结果，利用豌豆实验发现了植物的遗传规律，但是孟德尔的理论超出了当时人们能够接受的水平。 英国化学家、诗人汉弗莱·戴维。1778年出生。他小时聪明、淘气，不喜欢读书，喜欢玩乐。他不到20岁时，父亲去世。为了养家糊口，他到当地一位医生那当学徒，从此接触并喜欢上化学，因为觉得自己知识浅薄，他就自订计划发奋用功，凭着他的天资和勤奋，很快掌握了七种语言和不少科 学知识，并最终成为了英国皇家学会的主席。1798年戴维的名声随着他对笑气的发现而传遍了整个英国。他还带病专门研究火焰，发明了矿用安全灯（1816），这种灯一直到今天仍叫戴维灯，曾挽救了成千上万名矿工的生命。 He put forward this plan for this project. Can I put you forward for the golf club secretary? The match has been put forward to 11:30. Q1: How do the scientists usually do scientific research? Discuss in small groups the stages in setting out a new scientific idea. What order would you put them in? 1.Find a problem:(发现问题) 2.Make up a question:(提出疑问) 3.Think of a method:(找出研究方法) 4.Collect results:(收集材料) 5.Analyse results:(分析材料) 6.Find supporting evidence:(找出有力证据) 7.Draw a conclusion:(得出结论) The job involves gathering and analyzing the data. 该项工作包括收集和分析数据 不要急于下结论 Don’t draw a conclusion in a hurry. The judge concluded that the prison was guilty. 法官作出的结论是那个囚犯有罪。 Q2: what do you know about infectious diseases? Q3: What do you know about cholera? It is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat. 我下象棋赢了他 I defeated him by chess. 他决不肯认输。 He will never admit defeat. * * Archimedes He was an ancient Greek mathematician. Who wrote a book explaining how animals and plants developed as the environment changed? Charles Darwin He wrote The Origin of Species. Who invented the first steam engine? Thomas Newcomen Who used peas to show how physical characteristics are passed form parents to their children? Gregor Mendel Who discovered radium? Marie Curie Who invented the way of giving electricity to everybody in large cities? Thomas Edison Who was