必修5unit1科学家warmingup和reading公开课.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 1,Great,scientists,1.Which scientist discovered that objects,in water are lifted up by a force that,helps them float?,Archimedes,an ancient Greek mathematician&physicist,2.Who wrote a book explaining how,animals and plants developed as the,environment changed?,Charles Darwin,British author of,The Origin of Species,3.Who invented the first steam engine?,Thomas,Newcomen,British,4.Who used peas to show how physical,characteristics are passed from parents,to their children?,Gregor,Mendel,Czech,5.Who discovered radium?,Marie Curie,Marie Curie(1867-1934),Polish and French,won two Nobel Prizes,6.Who invented the way of giving electricity,to everybody in large cities?,C.Thomas Edison,American inventor,7.Who was the painter that studied dead,bodies to improve his painting of people?,Leonardo,da,Vinci,Italian artist,8.Who invented a lamp to keep miners safe,underground?,Sir,Humphry,Davy,British,discovered,the medicinal value of nitrous oxide(,一氧化二氮,)as,anaesthetic,(,麻醉剂,),9.Who invented the earliest instrument to,tell people where earthquakes happened?,Zhang,Heng,Zhang,Heng,(78-139),Chinese,invented the first seismograph,10.Who put forward a theory about black,holes?,Stephen Hawking,British scientist,Para 1,the most,deadly,disease of its day;,Neither its,cause,nor its,cure,was understood.,John Snow,cholera,John Snow:_,Cholera:_,a famous doctor in London;,so,expert,that he,attended,Queen Victoria as her personal,physician,.,How would it be controlled?,find its cause!,Para 2,There were _ theories explaining the cause of cholera.,two,Theory 1,Cholera was spread by_,_floating in the air to attack people.,Theory 2,Cholera was spread by _ with which,people,absorbed,this disease,into,their bodies.,meals,a cloud of dangerous gas,Which theory is correct?,Para 3&4,He needed,evidence,to prove the theory.,In 1854 when another outbreak hit London.,In two particular streets,.,Cholera was so,severe,there that more than 500 people had died in 10 days.,time,place,What did he do first,First he,marked,on a map,the exact places where all the dead people had lived.,1.Many of the deaths were near the water,pump,.,2.Some families had no deaths because they had drunk free beer instead of water from the pump.,Water!,Para 5,1.The water came from _.,2.,What did Dr.Snow advise the people in Broad Street to do immediately?And what was the result?,He advised people to remove the,handle,from the water pump and the disease soon began to slow down.,the river that polluted by the dirty water from London,Para 6,Supporting evidence _,A woman who had moved away from Broad Street died after drinking the water,while her daughter didnt.,Both a woman and her daughter died after drinking the water in another part of London.,A woman died after she delivered the water from the pump.,Although a woman and her daughter didnt live in the Broad street,they died after drinking the water from the pump,D,Para 7,To prevent the cholera from spreading again,what did John Snow suggest?,He suggested that the source of all the water supplies,be examined,.,John Snow Defeats“King Cholera”,