高中英语人教版必修五Unit1 Great Scientists Using LanguageⅠ （43张ppt）

课件43张PPT。Unit 1
Great scientists
Using language高二人教新课标版必修五Listening and speaking1 What do you know about Qian Xuesen? Before you listen to the tape, look at the picture and the exercises and predict the content of the listening.Qian is one of the pioneers of China's space science. A world- famous expert on aerospace rockets and aerodynamics, Qian has obtained great attainments in the areas of applied mechanics, engineering cybernetics and system engineering and made distinguished contributions to the foundation
and development of Chinese
aerospace undertaking. He plays a leading role in the research, manufacture and testing of carrier rockets, guided missiles and satellites. Due to research and development led by Qian, China successfully exploded its first atom bomb in 1964, launched its first man-made satellite in 1970, fired its first transcontinental ballistic missile toward the Pacific in 1980, and launched its first manned spacecraft on Oct. 15, 2003. 2. Listen to Parts 1 and 2 of the tape for the first time an write down the main idea. Then fill the following chart.be an engineerhis doctor’s degreebegan his institute3 Now listen to Part 1 again and answer these questions.
1 What did Qian Xuesen study first?Qian Xuesen first studied to be an engineer.2 What experience did he get in America that was useful for China? In America he began to work on space rockets so that he was able to develop a space programme when he came back to China. 3 What was Qian Xuesen’s main achievement when he returned to China?When Qian Xuesen returned to China he set up a space institute to begin training people in how to design and build rockets.4. Listen to Part 2 and fill in the chart below.1. Chinese astronauts in space2. Chinese satellites in space1. become rocket scientist2. be the first to land on Mars and put Qin Xuesen’s picture thereReading and writing

COPERNICUS’ REVOLUTIONARY THEORY CopernicusBrief introductionWe know the first scientist is Copernicus. He was one of the first scientists to use mathematical observations to collect information. He believed the sun is the center of the universe and the earth and other planets went around it. Birth: February 19, 1473
Death: May 24, 1543
Place of Birth: Toruń, Poland
Career:
1491-1494 Studied mathematics at Kraków Academy
1496 Went to Italy to study astronomy and law at the University of Bologna 1514 Wrote Commentariolus, an outline of his astronomical ideas, but did not circulate it widely
1543 Published De Revolutionibus Orbium Coelestium (On the Revolutions of the Celestial)1. At Copernicus’ time, Christian Church was in charge of many western countries.
2. Copernicus noticed that observed from the earth, some planets appears in front of or behind the earth.
3. Copernicus didn’t show his new theory to his friends until he completed it.TFTTask 1 True or False4. His friends were not interested in his ideas.
5. Since he was not afraid of being attacked by the Church, Copernicus published his book as soon as he finished working on it.
6. Newton, Einstein, and Hawking are all scientists who made contribution to the study of the universe. FFTBecause the powerful Christian Church would have punished him for even suggesting such an idea.1. Why could he not tell about his theory? Task 2 Answer these questions.2. What was his theory about? All his mathematical calculations led to the same conclusion: that the earth was not the centre of the solar system. Only if you put the sun there did the movements of the other planets in the sky make sense.3. What had the astronomers noticed in the sky? They had noticed that some planets in the sky seemed to stop, move backward and then go forward in a loop. Others appeared brighter at times and less bright at others.4. How did he explain changes in the movement of the planets and in the brightness of the stars? He placed a fixed sun at the centre of the
solar system with the planets going round
it and only the moon still going round the
earth. He also suggested that the earth
was spinning as it went round it and this
explain changes in the movement of the
planets and in the brightness of the stars. 5. Why do people think that there is a direct link between his ideas and the work of Isaac Newton, Albert Einstein and Stephen Hawking?Because his theory is now the base on
which all our ideas of the universe are
built. His theory replaced the Christian
idea of gravity, which said things fell to
earth because God created the earth as
the centre of the universe. He showed
this was obviously wrong. He published his theory as he lay dying in 1543.6. When did Copernicus publish his theory?Students give their own answers.7. Do you think it’s right for Copernicus to publish his theory that late?1 Use the reading passage to help you draw the two theories of the universe. The Earth was stationary at the center of the solar system, and the Sun and planets revolved around it.The Sun is stationary at the center of the solar system, and the Earth and the other planets orbit around it.If you were Nicolaus Copernicus, would you have hidden your theory for so many years?
Give reasonsDiscussion As a scientist, one should be brave. But Copernicus was afraid of being attacked by the Christian Church. So he had hidden his theory for so many years. What do you think of this?Agree:
1. He was cautious. if he had
published his ideas, he would have
been killed just as Bruno who was
burned to death because his theory
was against the Christian Church.
2. Every time when a new idea appears, there are always rejections. It’s
normal. Scientists should have
patience to spread their truth.
3. It made no sense for him to publish
his theory in a hurry. He was just
cautious not coward. He should
protect himself first.Disagree:
1. Copernicus was very coward. He
should speak out his discovery and
let the world know the truth earlier.
2. Science can never advance unless
people have the courage of their
beliefs.3. As a scientist, you must have the
courage to publish your findings.
No matter how people oppose them,
time will show if your ideas are right
or wrong.3. Now write a short letter asking Copernicus to publish his ideas so everyone can read them.
First, in pairs brainstorm some reasons why he should publish his theory. For example: He believes his new theory is true.
There are problems with the present theory.
He has done many years of observations to prove his new theory is true.
Science can’t develop unless people publish their ideas.Second, make a plan. For example:
Paragraph 1: Tell Copernicus who you are and why you want him to publish his ideas.
Paragraph 2: The first reason. (eg problems with the present theory)Paragraph 3: The second reason. (eg science cannot develop unless people publish their ideas)
Conclusion: Ask him again to reconsider publishing his ideas. One possible version:
Dear Nicolaus Copernicus,
I am a student studying astronomy and I would very much like to read your new theory about the solar system. I hope you will publish it for several reasons.
I understand the problems with the present theory. The way the planets move is not what you would expect ifif the earth was the certre of the universe. It is also odd that the brightness of some stars seems to change. So I agree with you that we need a new theory.
I know your observations have been very carefully carried out over many years. Now you must have the courage to publish them. Science can never advance unless people have the courage of their beliefs. I know you worry about what will happen if you publish your new theory. No matter how people oppose it, time will show if your ideas are right or wrong.
So I hope you will feel you can publish your new theory.
Yours sincerely,
Zhang HuaHomework Surf the Internet and get more information about Copernicus. http: //www.blupete.com/Literature/Biographies/Science/Copernicus.htm