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Unit 1 Great scientists

Unit 1 Great scientists. -----By Joyce. Scientists & Contributions:. Alexander Bell electricity Thomas Edison the First telephone Wright Brothers the electric Lamp Madame Curie black holes in Universe

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Unit 1 Great scientists

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  1. Unit 1 Great scientists -----By Joyce

  2. Scientists & Contributions: Alexander Bell electricity Thomas Edison the First telephone Wright Brothers the electric Lamp Madame Curie black holes in Universe Franklin Theory of Gravity Steven Hawking the First Plane Elbert Einstein Radium Isaac Newton the Theory of Relativity

  3. Unit 1 Great Scientists Do you know the great scientists? 1.Who invented the first modern steam engine? James Watt (瓦特) 2.Who discovered radium? Madame Curie

  4. 3. Who is the inventor of electric light bulb(电灯)? Thomas Edison 4.Who invented the earliest instrument to tell people where earthquakes happened? Zhang Heng

  5. 5.Who is the father of super hybrid rice? Yuan Longping 6. Do you know who defeated “King Cholera”? John Snow

  6. 1.Which scientist discovered that objects in water are lifted up by a force that helps them float? Archimedes(287-212 BC) an ancient Greek mathematician&physicist)

  7. 2.Who wrote a book explaining how animals and plants developed as the environment changed? “father of modern biology” Charles Darwin(1808-1882) British author of The Origin of Species

  8. 7.Who was the painter that studied dead bodies to improve his painting of people? Mona Lisa Last Supper Leonardo da Vinci (1452-1519) Italian artist

  9. 8.Who invented a lamp to keep miners safe underground? Sir Humphry Davy (1778-1829)British Miniature Miner's Safety Lamp

  10. 10.Who put forward a theory about black holes? Stephen Hawking (1942--) a British astronomer

  11. John Snow is a well-known doctor in the 19th century in London and he defeated “King Cholera”. Do you know what kind of disease is 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.

  12. Cholera: • It begins in the stomach and a severe case can lead to death without immediate treatment. • And the victims died very quickly from a loss of liquid after severe vomiting(呕吐) and diarrhoea(腹泻).

  13. ? The causes of cholera ? The correct or possible theory ? Collect data on those where people were ill and died ? Plot information on a map to find out where people died or did not die ? Analyse the water to see if that is the cause of the illness. ? Find other evidences to confirm his conclusion ? The advice of John Snow about how to solve the problem

  14. para.1 CarefulReading: expert John Snow was an doctor in London who Queen Victoria as her personal . He thought about helping ordinary people to cholera. Though the cause and the of it were unknown, he wanted to face the and solve the problem. attended physician exposed cure challenge

  15. para.2&3 CarefulReading: • What were the two theories about the cause of cholera? • Which did John Snow want to prove? • What was his method of doing the research? …multiplied……victims… …absorb… The second one. To gather information in two particular streets.

  16. para.4 CarefulReading: • What did he do with the results of his enquiry? • What valuable clue did he get about the cause of the disease? • What might be the cause? Marked on a map… Many of the deaths… …had no deaths. It seemed that the water was to blame for cholera.

  17. death Many of the deaths were near the water pump in Broad Street. Part of Snow’s Cholera Map

  18. para.5 CarefulReading: • Why did he tell people to remove the handle from the pump? • What happened after the handle was removed? So that … …slowed down

  19. para.6&7 CarefulReading: • Where did the woman live and what did she had delivered to her house every day? • What did their deaths suggest? • What measures did John Snow take to prevent the disease from spreading? Away from Broad Street Water from the pump The polluted water carried the virus ..suggested that…be examined …were instructed not toexpose…to…

  20. Dicussing Stages in setting out a new scientific idea: ⑦ draw a conclusion Think of a method Collect results Make a question Find a problem Analyse the results Find supporting evidence ③ ④ ② ① ⑤ ⑥

  21. John Snow Defeats “King Cholera” The passage is written as a report of an experiment and there are 7 steps: 1.Find a problem:(发现问题) 2.Make up a question:(形成研究主题) 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.Repeat if necessary:(必要时重新分析) 7.Draw a conclusion:(得出结论)

  22. (in 5 minutes) Read the passage again and fill in the blanks: John Snow was a well-known ____ in London in the ___ century. He wanted to find the ______ of cholera in order to ______ it. In 1854 when a cholera ____ out, he began to gather information. He _____ on a map where all the dead people had lived and he found that many people who had drunk the dirty water from the ______ died. So he decided that the polluted water carried cholera. He suggested that the _____ of all water supply be _______ and new methods of ________ with polluted water be found. Finally, “King Cholera” was defeated. doctor cause 19th defeat broke marked pump source examined dealing

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