高中英语unit20lesson3scientificbreakthroughs北师大版选修.pptxVIP

Unit 20 Lesson 3Scientific BreakthroughsSome discoveries or inventions in the 20th century:Means of transport:Wright BrothersThe change in communication:This is my personal one small step, it was a great step of mankind.Neil Alden Armstrong was the first person to set foot on the Moon.The first artificial satellite, Sputnik 1, was launched by the Soviet Union in 1957.ReadingPioneers of ScienceAlbert Einstein was considered the greatest scientist of the 20th century. Albert EinsteinHis greatest discovery is the creation of his famous Theory of Relativity. Edwin Hubble was an American astronomer. His most important discovery was the expanding universe. Edwin HubbleHubble space telescopeAlexander Fleming, a Scottish biochemist,discovered Penicillin.Alexander FlemingJohn William Mauchly and J. Presper EckertThe designer of ENIAC, the first commercial computer made in the United States.The World First ComputerPercy Spencer, an American engineer and inventor, discovered microwaves.Percy SpencerTry to match the discoveries with how they were discovered?1.The equation E=mc22.Penicillin3.The first computer4.Other galaxies5. Microwavea)Scientists worked together as a teamb)There was a lucky accidentc)A scientist did research for many yearsd)A scientist was inspirede) There was a mistakeAre these statement true or false according to the text or is there no information?Einstein was at work when he thought of the equation “E=mc2”.Einstein participated in the program that developed the nuclear bomb.Einstein observed changes in time, size and mass.Hubble studied the universe for over twenty years.Hubble discovered that our galaxy is bigger than we thought it was.6. Fleming had been studying bacteria in his laboratory when the discovery happened.7. There was a blue mould around the bacteria in the dish.8. Fleming developed the process of making penicillin. 9. The first computer project failed to meet its original goal. 10. The first computer was extremely difficult to