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1、newsThe world will come to an end and the earth will be destroyed in 200 years.第1页/共25页He put forward a theory about black holes第2页/共25页Who are they?Who are they?Guessing game第3页/共25页Who is he?Who is he?He has made a famous kite experiment.He learned a lot from it and invented lightningrod(避雷针避雷针).)
2、.He is Benjamin FranklinNever leave that until tomorrow,which you can do today.今日事,今日毕.第4页/共25页Who is he?Who is he?He is called the greatest scientist in the 20th century.He is famous for the Theory of Relativity.He is Albert EinsteinImagination is more important than knowledgeimaginative第5页/共25页Who
3、 is he?Who is he?He invented electric bulbs.He made more than 1,000 inventions duringhis life.He is Thomas EdisonThomas Alva EdisonGenius is one percent inspiration and ninety-nine percent perspiration.天才就是百分之九十九的汗水加上百分之一的灵感天才就是百分之九十九的汗水加上百分之一的灵感天才就是百分之九十九的汗水加上百分之一的灵感天才就是百分之九十九的汗水加上百分之一的灵感.第6页/共25页W
4、ho is she?Who is she?She is a woman scientist.She discovered radium(镭镭)and polonium(钋钋).In her life,she won the Nobel Prize twice.She is Marie CurieNothing in life is to be feared.It is only to be understood.生活中没有什么可怕的东西生活中没有什么可怕的东西生活中没有什么可怕的东西生活中没有什么可怕的东西,只有需要理解的东西只有需要理解的东西只有需要理解的东西只有需要理解的东西.第7页/共2
5、5页Who is he?Who is he?He made the first telescope in the world.His observations show that the earth movesaround the sun.He is Galileo GalileiYou cannot teach a man anything.You can only help him find it within himself.你不可能把一切都教给一个人，你不可能把一切都教给一个人，你只能帮助他从内心去发现（和了解）事物你只能帮助他从内心去发现（和了解）事物。第8页/共25页What ot
6、her What other scientists scientists do you know?do you know?Do the quiz Do the quiz and see who and see who knows the knows the most.most.Warming up第9页/共25页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 mathe
7、matician&physicist第10页/共25页2.Who wrote a book explaining how animals and plants developed as the environment changed?Charles Darwin(1808-1882)British author of The Origin of Species 第11页/共25页3.Who invented the first steam engine?Thomas Newcomen(1663-1729)British,invented a steam engine.James Watt im
8、proved it and turned it into the first modern steam engine used on the railways.第12页/共25页4.Who used peas to show how physical characteristics are passed from parents to their children?Gregor Mendel(1822-1884)Czech(捷克人)第13页/共25页5.Who was the painter that studied dead bodies to improve his painting of
9、 people?Last SupperMona LisaLeonardo da Vinci(1452-1519)Italian artist第14页/共25页6.Who invented a lamp to keep miners safe underground?Sir Humphry Davy(1778-1829)BritishMiniature(小型的)Miners Safety Lamp 第15页/共25页Brainstormingmade a great contributionmade great achievementssucceeded in their scientific
10、careerovercame many difficulties第16页/共25页Who is John Snow?a famous doctor in London.relationship attended her as her personal physician.第17页/共25页What is the problem?The cholera was the most deadly disease of its day.Neither its cause,nor its cure was understood.What caused cholera?Details 第18页/共25页W
11、hat are the two theories?Cholera multiplied in the air without reason.A cloud of dangerous gas would float around until it found its victims.People absorbed it with their meals.第19页/共25页A map of Broad StreetWhat method did he use?Broad StreetMany deaths happened here.No death happened here.The water
12、 from the pump was to blame.Public house第20页/共25页analyze the results:What happened to the pump water?The water was from the river which had been polluted by the dirty water from London.第21页/共25页Find supporting evidence:What extra evidence did he find?A woman and her daughter who lived far away but d
13、rank the water also died.draw a conclusion with certaintyThe polluted water carried the disease.第22页/共25页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
14、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 supplies be _ and the water companies were_ not to _ people _ po
15、lluted water any more.Finally “King Cholera”was _.doctor19thcausedefeatbrokemarkedpumpsourceexaminedinstructedexposetodefeated第23页/共25页What should we pay attention to in our daily life in order not to get infected with diseases?Heal the food left overnightCook raw food thoroughlyWash hands oftenKeep away from flieschoose fresh sea foodKeep the kitchen cleanDispose rubbish properly.Drink boiled waterDiscussion第24页/共25页感谢您的观赏！第25页/共25页