5Unit1GreatScientistsWarmingup文档.ppt

Unit 1 Great Scientists Do you know? Who discovered that objects in water are lifted up by a force that helps them float? Who wrote a book explaining how animals and plants developed as the environment changed? Archimedes Charles Darwin * 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? Who invented the way of giving electricity to everybody in large cities? Who was the painter that studied dead bodies to improve his painting of people? Maries Curie Thomas Edison Leonardo da Vinci * Who invented a lamp to keep miner safe underground? Who invented the earliest instrument to tell people where earthquakes happened? Who put forward a theory about black holes? Sir Humphrey Davy Zhang Heng Stephen Hawking * Do you know? 发明蒸汽机的并不是瓦特，他是改进纽可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。 * Thomas Edison The Inventions of Thomas Edison Phonograph 留声机 Light bulb Motion Pictures * What do you know about infectious diseases(传染病)? Infectious diseases can be spread easily. They have an unknown cause and may do great harm to people. People could be exposed to infectious diseases, so may animals, such as bird flu(禽流感). AIDS, SARS are infectious diseases. They are difficult to cure. * What do you know about cholera(霍乱)? Cholera (or Asiatic cholera or epidemic cholera) is a severe diarrheal(痢疾) disease caused by the bacterium(细菌) Vibrio cholerae.Transmission (传播)to humans is by ingesting(摄取) contaminated(污染的)water or food. Cholera can be mild or even without symptoms, but a severe case can lead to death without immediate treatment. * Do you know how to prove a new idea in scientific research? Discuss in groups. Draw a conclusion (得出结论) Think of a method (找出研究方法) Collect results (收集材料) Make up a question (形成研究主题) Find a problem (发现问题) Analyze the results (分析材料) Find supporting evidence (找到证据) Repeat if necessary