Great_scientists-warmingupandReading課件

1、Unit 1 Great scientists遺傳學(xué) 電浮力定理 鐳進(jìn)化論 畫家 蒸汽機(jī)礦工安全燈黑洞理論地動儀阿基米德 Archimedes達(dá)爾文 Charles Darwin紐可門 Thomas Newcomen孟德爾 Gregor Mendel居里夫人 Marie Curie愛迪生 Thomas Edison達(dá)芬奇 Leonardo de Vinci漢弗來.戴維爵士Sir Humphry Davy張衡 Zhang Heng斯蒂芬.霍金 Stephen HawkingWarming UpMatch the names and what they famous for .Unit 1 Gre

2、at ScientistsDo you know the great scientists?1.Who invented the first modern steam engine?James Watt (瓦特)2.Who discovered radium?Madame Curie3. Who is the inventor of electric light bulb(電燈)?Thomas Edison4.Who invented the earliest instrument to tell people where earthquakes happened?Zhang Heng1.Wh

3、ich 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)2.Who wrote a book explaining how animals and plants developed as the environment changed?Charles Darwin (1808-1882) Britishauthor of The Ori

4、gin of Species “father of modern biology”7.Who was the painter that studied dead bodies to improve his painting of people? Mona LisaLeonardo da Vinci (1452-1519) Italian artist8.Who invented a lamp to keep miners safe underground?Sir Humphry Davy (1778-1829)BritishMiniature Miners Safety Lamp 10.Who

5、 put forward a theory about black holes?Stephen Hawking (1942-) a British astronomer5.Who is the father of super hybrid rice?Yuan Longping6. Do you know who defeated “King Cholera”?John SnowJohn Snow is a well-known doctor in the 19th century in London and he defeated “King Cholera”.Do you know what

6、 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.Cholera: It begins in the stomach and a severe case can lead to death without immediate treatment. And the victims died very

7、quickly from a loss of liquid after severe vomiting(嘔吐) and diarrhoea(腹瀉).draw a conclusion Think of a method Collect results Make a questionFind a problem Analyse the results Find supporting evidenceStages in setting out a new scientific idea:DicussingSteps:What/How?1.Find a problem2.Make up a ques

8、tion3.Think of a method4.collect resultsJohn Snow Defeats “King Cholera”What causes cholera?Which theory is correct?Collect information on those who were ill or died and where they got their waterMark information on a map to find out where people died or did not died6.Repeat if necessary7.Make a con

9、clusion5.Analyse resultsAnalyse the water to see if that is the cause of the illnessFind other evidence to make sure the conclusionThe water is to blame. The source of all drinking water should be examined.1. Read the passage and number these events in the order that they happened_John Snow began to

10、 test two theories._An outbreak of cholera hit London in 1854._John Snow marked the deaths on a map._He announced that the water carried the disease._John Snow investigated two streets where the outbreak was very severe._King Cholera was defeated._He found that most of the deaths were near a water p

11、ump._He had the handle removed from the water pump.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.1expertattende

12、dphysicianexposedcurechallengeCareful 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 victimsabsorb The second one.To gather information in two particular streets.para.2&3Careful Reading:para.4What

13、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 mapMany of the deathshad no deaths.It seemed that the water was to blame for cholera.Many of the deaths were near the water pump in Broad Street.deathPart of Sno

14、ws Cholera MapCareful Reading:para.5Why did he tell people to remove the handle from the pump?What happened after the handle was removed?So that slowed downCareful Reading:para.6&7Where did the woman live and what did she had delivered to her house every day?What did their deaths suggest?What measur

15、es did John Snow take to prevent the disease from spreading?Away from Broad StreetWater from the pumpThe polluted water carried the virus.suggested thatbe examinedwere instructed not to exposetoRead 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 d