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*,*,北京师范大学出版社,九年级,|,全册,Unit 8 Lesson 22,Famous Discoveries,1,Have you seen this picture?Whats this?,Warm-up,2,NASAon23,rd,Julyannouncedthediscovery,ofKepler-452b,themostEarth-likeplanet,ever found.Located1,400light-yearsfrom,ourplanet,NASAcalledit“Earth2.0”,becauseitsthe firstplanetdiscoveredinthe,habitablezoneofaGstarsimilartooursun.,7,月,23,日，美国国家航空航天局,(,简称为,NASA),宣布发现开普勒,-452b,，是迄今为止与地球最为相近的行星。该行星距离地球,1400,光年，,NASA,将其命名为“地球,2.0”,，因为它是第一颗人类在宜居带里与太阳相似的恒星附近发现的行星。,1.,与太阳相似的恒星被发现,3,这颗系外行星编号,Kepler 452b,，其直径约为地球的,1.6,倍，与恒星之间的距离与日,-,地距离相近。恒星,Kepler 452,距离地球大约,430,秒差距,(,约合,1400,光年,),，位于天鹅座。,天文学家称，这是至今为止,发现,的最接近地球的“孪生星球”，跟地球的相似指数为,0.98,，并且有可能拥有大气层和流动水。,NASA,说这个星球上可能有活火山，有存在生命的可能性，行星应该有,60,亿年历史，地球为,45,亿年。,4,An international team of scientists said they have discovered the farthest galaxy ever measured in the universe.,By using a powerful instrument called MOSFIRE on the Keck I telescope at the Keck Observatory in Hawaii,the team thought that the galaxy,EGS-zs8-1,formed more than 13 billion years ago at a time when the universe was only five percent of its present age.,科学家使用位于夏威夷的凯克天文台的望远镜发现了新星系，并将这个星系命名为,EGS-zs8-1,。它是迄今发现的最遥远星系，打破了此前的观测纪录。,2.,宇宙中最遥远星系被发现,5,What are the people doing in the following pictures?,What do you think they are trying to discover?,Discussion,Example:,I think the person in Photo A is observing the stars.Maybe he is trying to discover a new star.,6,Key Words:Discoveries,chemistry,do experiments,electricity,health,lab,machine,observe,physics,research,space,technology,Listen and practice.,7,1.Do you know any other scientific discoveries?,2.Can you name some,famous ones?,3.Among these discoveries,which do you think are the most important ones?,Free Talk,Look at your worksheet after class.,PPT(2632),8,Do you know any of them?Whats their major achievements?,9,Tu Youyou has become the first Chinese woman to win a Nobel Prize(2015),for her work in helping to create an anti-malaria(ntimleri,抗疟疾的,)medicine.,屠呦呦,(1930-),药学家,抗疟疾,:,青蒿素和双氢青蒿素,Reading,10,and match,2.Many children died very young because of different diseases.Now it can be cured(,治愈,)easily with it.,Look!Guess,1.Its a discovery in physics,（身体）,.It can go right through some things like skin(,皮肤）,and wood but stop by bones or metal.,3.Its the building block of life and we know a great deal about what we get from our parents from it.,A,B,C,Read and find the name of the picture A,B and C and make sure whether your match is right or not.,X-ray,DNA,antibiotics,11,The first antibiotic:Penicillin,青霉素，盘尼西林,It can wipe out the infection,消除感染,Alexander Fleming,亚历山大,弗莱明,12,Event,Year,The structure of,DNA,was discovered.,Wilhelm Roentgen,received the Nobel Prize.,Scientists discovered DNA,.,1953,When did these things happen?Write the correct years.,1901,1869,13,DNA structure,double coiled spiral structure,(,双线圈螺旋结构）,Crick,Watson,克里克 沃森,14,W,ilhelm,R,oentgen,X-ray,1845-1923Germany,威廉,伦琴,15,What effect do these discoveries have?,discoveries,effect,Antibiotics,DNA,X-rays,A lot of diseases can be cured easily with it.,pass on certain characteristics,be able to treat more disease.,Doctors treat broken bones easily with X-rays machines.,16,Three discoveries,DNA,(Crick&Watson),X-rays,(W,ilhelm,R,oentgen),1.,the building block of life,2.pass on certain characteristics,3.,be able to treat more disease,Doctors treat broken bones easily with X-rays machines.,The text is about,A lot of diseases can be cured easily with it.,Antibiotics,(Fleming),effect,17,Can you answer these questions?,Finish them on the worksheet.,1.What can cure a lot of diseases easily?,What passed on certain characteristics from,parents to children?,3.What can scientists know from the map of our DNA?,4.Who was the first to study and name X-ray?,5.What prize did the discoverer of X-ray award?,18,Answer the following questions,Antibiotics,X-rays.,(DNA,maybe in the future.),1.What can cure a lot of diseases easily?,19,2.What passed on certain characteristics from parents to children?,3.What can scientists know from the map,of our DNA?,DNA.,It tells them a great deal about what get,from our parents.,20,4.Who was the first to study and name X-ray?,5.What prize did the discoverer of X-ray award?,Wilhelm Roentgen.,The first-ever Nobel Prize in Physics.,21,1.cure vt.,治愈；矫正；解决；消除,He needed surgery to cure a troublesome back injury.,2.block,n.,块；街区；障碍物，阻碍,She walked four blocks down High Street.,There is a block of ice.,Language points,22,3.pass on,传递；去世；前进；对,发表（意见）,He has written a note asking me to pass on his thanks.,4.treat,v.,对待；治疗；处理；款待,Doctors treated her with aspirin.,23,If Marys hand is cut by a knife for 3days,what will she do?,If your leg gets hurt in P.E,what should you do?,If you have a headache,what can you do?,“Doctor,can you explain what antibiotic is for me?”asks one patient.,If youre a doctor,Please treat!(Pair Work),Problems,Pair work,24,Which discovery do you think is the most important according to the text?,Group Work,Example:,A:I think X-rays are the most important discovery.,B:Why?
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