必修5unit1great-scientist

1、必修必修5 5 Unit 1Unit 1 Great Great scientistsscientists Objective Find out what you already know about famous scientists. 我们在此处增加本课时重点单词和短语表我们在此处增加本课时重点单词和短语表 达部分达部分, , 旨在帮助学生在上课前对早读学旨在帮助学生在上课前对早读学 习的单词及短语进行复习回顾，从而加深习的单词及短语进行复习回顾，从而加深 记忆。记忆。 用一分钟时间对单词进行复习，使学用一分钟时间对单词进行复习，使学 生在新课学习中没有单词障碍。生在新课学习中没有单词障碍

2、。 通过朗读，使学生熟练掌握单词的正通过朗读，使学生熟练掌握单词的正 确发音。确发音。 所呈现单词均出自课本所呈现单词均出自课本单词表单词表中的词中的词 汇。汇。 characteristic radium painter scientific conclude conclusion analyse n. 特征特征; 特性特性 n. 镭镭 n. 画家画家; 油漆匠油漆匠 adj. 科学的科学的 vt. 推断出推断出 n. 结论结论; 结束结束 vt. 分析分析 Words review put forward draw a conclusion 提出提出 得出结论得出结论 Expression

3、s review There are some great scientific achievements that have changed the world. Can you name some of them? Match the achievements with the scientists below. Galileo Galilei Benjamin Franklin Newton Alexander Bell Albert Einstein the theory of falling objects lightning the law of gravity telephone

4、 Scientists Achievements the theory of relativity What do you know about great scientists? Try this quiz and find out who knows the most. 1. Which scientist discovered that objects in water are lifted up by a force that helps them float? B. Archimedes C. Thomas Edison A. Charles Darwin Archimedes (2

5、87-212 BC), an ancient Greek mathematician & physicist 2. Who wrote a book explaining how animals and plants developed as the environment changed? A. Marie Curie C. Charles Darwin B. Gregor Mendel Charles Darwin (1808-1882), British author of The Origin of Species 3. Who invented the first steam eng

6、ine? A. Thomas Newcomen C. Thomas Edison B. Archimedes Thomas Newcomen (1663-1729), British, improved the first steam pump and turned it into a steam engine for taking water out of mines in 1712 4. Who used peas to show how physical characteristics are passed from parents to their children? A. Thoma

7、s Edison C. ArchimedesB. Gregor Mendel Gregor Mendel (1822-1884), Czech, developed ideas on heredity (遗传学遗传学) and inherited (继承继承, 承传承传) characteristics 5. Who discovered radium? C. Marie CurieB. NewtonA. Zhang Heng Marie Curie (1867-1934), Polish and French, won two Nobel prizes 6. Who invented the

8、 way of giving electricity to everybody in large cities? A. Stephen Hawking C. Thomas Edison B. Archimedes Thomas Edison (1847-1931), American inventor Thomas Edison Inventions of Thomas Edison Phonograph 留声机留声机 Light bulb motion picture camera 7. Who was the painter that studied dead bodies to impr

9、ove his painting of people? A. Gregor Mendel C. Marie Curie B. Leonardo da Vinci Leonardo da Vinci (1452-1519), Italian artist Leonardo da Vincis paintings 8. Who invented a lamp to keep miners safe underground? A. Sir Humphry Davy C. FaradayB. Thomas Newcomen Sir Humphry Davy (1778-1829), British,

10、discovered the medicinal value of nitrous oxide (一氧化二氮一氧化二氮) as anaesthetic (麻醉剂麻醉剂) 9. Who invented the earliest instrument to tell people where earthquakes happened? A. Charles Darwin C. Watt B. Zhang Heng Zhang Heng (78-139), Chinese, invented the first seismograph seismograph 地动仪地动仪 10. Who put

11、forward a theory about black holes? A. Stephen Hawking C. CopernicusB. Archimedes Stephen Hawking (1942- ), British scientist, worked in astronomy and studied black holes in space The quotes below are from some famous scientists. Do you know their meanings? Imagination is more important than knowled

12、ge. “想象力比知识更重要。想象力比知识更重要。” Albert Einstein Genius is one percent inspiration and ninety- nine percent perspiration. “天才就是百分之九十九的汗水天才就是百分之九十九的汗水 加上百分之一的灵感。加上百分之一的灵感。” Thomas Alva Edison Marie Curie Nothing in life is to be feared, it is only to be understood. “生活中没有什么可怕的东西，生活中没有什么可怕的东西， 只有需要理解的东西。只有需

13、要理解的东西。” It takes a very unusual mind to undertake analysis of the obvious. Alfred Whitehead “分析明显存在的事物需要非凡的分析明显存在的事物需要非凡的 头脑。头脑。” What makes a scientist successful? strong will imagination creativity patience persistence carefulness curiosity Do you know how to prove a new idea in scientific resear

14、ch? Discuss in small groups the stages in setting out a new scientific idea. What order would you put them in？ Draw a conclusion Think of a method Collect results Make a question Find a problem Analyse the results Find supporting evidence What disease spread around the world in 2003? SARS Which doct

15、or impressed you most during the SARS? Zhong Nanshan (钟南山钟南山) What other infectious diseases do you know? bird flu H1N1 Hand-foot-mouth disease (HFMD) Infectious diseases can be spread to other people. They have an unknown cause and need public health care to solve them. People may be exposed to inf

16、ectious diseases, so may animals. Bird flu, AIDS and SARS are infectious diseases. Infectious diseases are difficult to cure. What do you know about infectious diseases? What do you know about cholera? What other diseases do you know are similar to SARS today? cholera What is Cholera? Cholera is the

17、 illness caused by a bacterium called Vibrio cholerae. It infects peoples intestines (肠肠), causing diarrhea (腹泻腹泻), vomiting and leg cramps. The most common cause of cholera is by someone eating food or drinking water that has been infected with the bacteria. After a disaster, this is a very real danger, since regular, clean water and food supplies are often unavailable. The disease can be spread even further by infected people using already dirtied water sources to clean themselves or dispose of waste. Great Britain Germany Death of first cho