Unit-20-Lesson-3-Scientific-Breakthroughs-课件-北师大版选修7.ppt

1、Lesson3 Scientific Breakthroughs,Do you know him and his discoveries?,Newtons Law of Universal Gravitation 万有引力定律,Some discoveries or inventions in the 20th century:,Means of transport:,Wright Brothers,The change in communication:,Neil Alden Armstrong was the first person to set foot on the Moon.,Th

2、is is my personal one small step, it was a great step of mankind.,The first artificial satellite, Sputnik 1, was launched by the Soviet Union in 1957.,How much do you know about the inventors and the inventions? Lets have a quiz.,Lead in 2,1. _ isnt Thomas Edisons invention.,The long- lasting, pract

3、ical electric light bulb,B. The phonograph (留声机),C. The practical, publicly demonstrated television system,2. _ is called “Father of Car”. A. Rudolf Diesel B. Karl Benz C. Thomas Edison,3. _ is called “Father of Dynamite (炸药)”. A. Alfred Nobel B. Albert Einstein C. Alexander Bell,4. Marconi (马可尼) in

4、vented the _ in the world. A. TV B. long distance radio transmission C. typewriter,5. _ invented the first airplane. A. Wright Brothers B. Henry Ford C. Benjamin Franklin,Reading,Pioneers of Science,His greatest discovery is the creation of his famous Theory of Relativity.,Albert Einstein,Albert Ein

5、stein was considered the greatest scientist of the 20th century.,Edwin Hubble was an American astronomer. His most important discovery was the expanding universe.,Edwin Hubble,Hubble space telescope,Alexander Fleming, a Scottish biochemist, discovered Penicillin.,Alexander Fleming,The designer of EN

6、IAC, the first commercial computer made in the United States.,John William Mauchly and J. Presper Eckert,The World First Computer,Percy Spencer, an American engineer and inventor, discovered microwaves.,Percy Spencer,1.The equation E=mc2 2.Penicillin 3.The first computer 4.Other galaxies 5. Microwav

7、e,Try to match the discoveries with how they were discovered?,a)Scientists worked together as a team b)There was a lucky accident c)A scientist did research for many years d)A scientist was inspired e) There was a mistake,1. The passage is mainly about _. A. Scientific discoveries B. Pioneers of Sci

8、ence C. Scientific discoveries in the 20th century D. Pioneers of science in the 20th century 2. How many famous scientists are mentioned in the passage? A. One B. Four C. Six D. Eight,introduction Body Conclusion,Simple outline,A brief introduction of scientific breakthroughs in the 20th century,So

9、me great pioneers of science and their inventions or discoveries,The significance of these breakthroughs,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 studie

10、d the universe for over twenty years. Hubble discovered that our galaxy is bigger than we thought it was.,F,T,T,Are these statement true or false according to the text or is there no information?,NI,NI,6. Fleming had been studying bacteria in his laboratory when the discovery happened. 7. There was

11、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 program. 11. The scientist who discovered microwaves invented microwave ovens. 12. To

12、day it is possible to donate your heart to hospital when you die.,NI,T,NI,T,NI,F,F,the world and space,E=mc2,energy,change,New galaxies,larger,millions of lives,accuracy,Microwaves,breakthroughs,Discussion:,It is predicted（预言）that there will be 5 scientific breakthroughs in the 21st century. What do

13、 you think will be the 5 scientific breakthroughs and how will they influence our life? Have a discussion and voice your opinion.,1. Well know where we came from. Why does the universe exist? 2. Well crack the genetic code and conquer cancer. 3. Well live longer (120 years?). 4. Well “manage”Earth. Well stop talking about the weather but will do something about it. Well gradually learn how to predict the effects of human activity on the Earth, its climate and its ecosystems. 5. Well have a brain“road map”. Well be able to say with certainty whic