必修5unit1-Great-Scientists(Reading)(课堂PPT).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,*,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,Reading,1,Who is he?What is his achievement?,A great scientist,Father of Hybrid Rice,The man who puts an end to hunger,2,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,Scientists,&,Contributions:,3,Archimedes,(,阿基米德,),Warming up:,1.Which scientist discovered that objects in water,are lifted up,by a force that helps them float?,Ancient Greek,(287-212BC),A mathematician,4,Charles Darwin,2.Who wrote a book explaining how animals and plants developed as the environment changed?,the Origin of Species,Warming up:,“father of modern biology”,5,3.Who invented the first steam engine?,Thomas Newcomen,British(1663-1729)He,improved,the first steam pump built by Thomas Savery in 1698 and,turned it into,a steam engine for taking water out of mines in 1712.James Watt,improved,it still further in the 1770s,Thomas Newcomen,Warming up:,6,Gregor Mendel,Czech(1822-1884)He grew pea plants and developed ideas on heredity(,遗传学,)and inherited(,继承,承传,)characteristics.Between1856-1863 he grew 28,000 pea plants.,Gregor Mendel,4.Who used peas to show how physical,characteristics,are passed from parents to their children?,Warming up:,7,Marie Curie,Warming up:,5.Who discovered,radium,?,6.Who invented the way of giving electricity to everybody I large cities?,Thomas Edison,8,Leonardo da Vinci,7.Who was the painter that studied dead bodies to improve his painting of people?,Warming up:,9,Sir Humphry Davy,British(1778-1829)He did research into different gases and discovered the medicinal value of nitrous,(,含氮的,),oxide,(,氧化物,),(or laughing gas)as an anaesthetic,(,麻醉剂,).,In 1815 he developed a safety lamp for miners.,Humphry Davy,8.Who invented a lamp to keep miners safe underground?,Warming up:,10,Zhang Heng,Chinese(78-139)He invented the first seismograph,(,测震 仪、地震仪,),to indicate in the direction of an earthquake.It was in the shape of a cylinder,(,圆筒形,),with eight dragonheads round the top,each with a ball in its mouth.,9.Who invented the earliest instrument to tell people where earthquakes happened?,Warming up:,seismograph,11,Stephen Hawking,British(1942-)He has worked in astronomy and studied black holes in space.He has shown that black holes do not only absorb everything around them but,from time to time,throw out matter as well.,10.Who,put forward,a theory about black holes?,Warming up:,12,Pre-reading:,13,infectious,diseases:,They can be spread to other people.,They have an unknown cause.,They are difficult to,cure,.,They need public health care to solve them,.,Pre-reading,:,14,Skimming:,:,Who was the great scientist in the passage and what was the deadly disease of its day?,John Snow,cholera,15,Careful,Reading,:,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.,para.1,expert,attended,physician,exposed,cure,challenge,16,Careful,Reading,:,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.,para.2&3,17,Careful,Reading,:,para.4,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.,18,A map of Broad Street,What method did he use?,Broad Street,Many deaths happened here.,No death happened here.,The water from the pump was to blame,.,Public house,Paragraphs 3+4,19,Careful,Reading,:,para.5,Why did he tell people to remove the,handle,from the,pump,?,What happened after the handle was removed?,So that,slowed down,20,Careful,Reading,:,para.6&7,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,instruct,ed not to,expose,to,21,Careful Reading,Finish the chart,Find a problem,2.Make a question,3.Think of a method,4.Collect results,5.Analyse result,6.Find supporting,evidence,7.Draw a conclusion,-,What causes cholera?,-,Which theory is correct?,-,Gather information when another,outbreak hit London in 1854,-,Make a map to find out where,people died or did not died,-,Look into the source of water,and analyse the water,-,Find supporting evidence from,two other deaths,-,The polluted water carried,the virus,22,What should we pay attention to in our daily,life in order not to get infected with all these,infectious diseases?,Heat the food left overnight,Cook raw food thoroughly,Wash hands often,Keep away from flies,choose fresh sea food,Keep the kitchen clean,Dispose rubbish properly.,Drink boiled water,Discussion,23,Read the text and learn the new words by heart,Find more information about cholera and John Snow on the Internet.,Homework,:,24,