必修5unit1_Great_Scientists(Reading)(課堂PPT)

1、1Unit 1 Great ScientistsReading2Who is he? What is his achievement?A great scientistFather of Hybrid RiceThe man who puts an end to hunger 3Alexander Bell electricity Thomas Edison the First telephoneWright Brothers the electric LampMadame Curie black holes in UniverseFranklin Theory of GravitySteve

2、n Hawking the First PlaneElbert Einstein RadiumIsaac Newton the Theory of RelativityScientists & Contributions:4Archimedes(阿基米德阿基米德)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 mathematician5Charles Darwi

3、n2. Who wrote a book explaining how animals and plants developed as the environment changed?the Origin of SpeciesWarming up:“father of modern biology”63. Who invented the first steam engine? Thomas Newcomen, British (1663-1729) He improved the first steam pump built by Thomas Savery in 1698 and turn

4、ed it into a steam engine for taking water out of mines in 1712. James Watt improved it still further in the 1770sThomas NewcomenWarming up:7Gregor Mendel, Czech (1822- 1884) He grew pea plants and developed ideas on heredity(遺傳學(xué)遺傳學(xué)) and inherited (繼承繼承,承傳承傳) characteristics. Between1856- 1863 he gr

5、ew 28,000 pea plants.Gregor Mendel4. Who used peas to show how physical characteristics are passed from parents to their children?Warming up:8Marie CurieWarming up:5. Who discovered radium?6. Who invented the way of giving electricity to everybody I large cities?Thomas Edison9Leonardo da Vinci7. Who

6、 was the painter that studied dead bodies to improve his painting of people? Warming up:10 Sir Humphry Davy, British (1778- 1829) He did research into different gases and discovered the medicinal value of nitrous(含氮的含氮的) oxide(氧化物氧化物) (or laughing gas) as an anaesthetic(麻醉劑麻醉劑). In 1815 he developed

7、 a safety lamp for miners. Humphry Davy8. Who invented a lamp to keep miners safe underground?Warming up:11 Zhang Heng, Chinese (78- 139) He invented the first seismograph(測(cè)震測(cè)震 儀、地震儀儀、地震儀) to indicate in the direction of an earthquake. It was in the shape of a cylinder(圓筒形圓筒形) with eight dragonheads

8、 round the top, each with a ball in its mouth. 9. Who invented the earliest instrument to tell people where earthquakes happened?Warming up:seismograph12 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 eve

9、rything around them but, from time to time, throw out matter as well. 10. Who put forward a theory about black holes?Warming up:13Pre-reading:14infectious 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.

10、Pre-reading:15Skimming:Who was the great scientist in the passage and what was the deadly disease of its day?John Snow cholera16Careful 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 w

11、ere unknown, he wanted to face the and solve the problem. expertattendedphysicianexposedcurechallenge17Careful 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 gathe

12、r information in two particular streets.18Careful Reading: 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 mapMany of the deathshad no deaths.It seemed that the water was to blame for cholera.19A map of

13、 Broad StreetWhat method did he use?Broad StreetMany deaths happened here.No death happened here.The water from the pump was to blame.Public house20Careful Reading: Why did he tell people to remove the handle from the pump? What happened after the handle was removed?So that slowed down21Careful Read

14、ing: 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 StreetWater from the pumpThe polluted water carried the virus.suggested thatbe examinedwere instr

15、ucted not to exposeto22Careful ReadingFinish the chart Find a problem2. Make a question3. Think of a method4. Collect results5. Analyse result6. Find supporting evidence7. Draw a conclusion -What causes cholera? -Which theory is correct? -Gather information when another outbreak hit London in 1854 -

16、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 23What should we pay attention to in our daily life in order not to get infected with all these infectious diseases? Heat the food left overnightCook raw food th