人教版高一英语Unit16 Scientists at work2 课件.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit16 Scientists at work,What kind of people do you think,scientists are?,Scientists are not only people working in fields,such as chemistry,physics,biology or astronomy,but also in subject areas such as literature,and,language.,academician,President of,Zhejiang,University,Father of Chinas Aerospace,Director of the Guangzhou Institute,ofRespiratory Diseases,Tell me what it is!,Describe what you see in each picture.What is it about?,students at work in a chemistry lab,students at work in a physics lab,students looking at something through a microscope,What are the subjects in which you learn science?What can you learn in your science classes?,Science,physics,chemistry,biology,In physics we can learn about,the laws of the universe,for example about Newton and,the reason,why,all the things on earth fall down.,back,In chemistry we learn about,the way,different liquids and materials,react,with each other.,back,In biology we learn about,life on earth,for example,by,looking at,the structure of cells.,back,If you want to learn the science subjects well,what should you also do besides the class learning?,Through a microscope,We can learn the subjects well by _.,physics,chemistry,biology,Darwin,Steven Hawking,Li,Zhengdao,Thomas Edison,Albert Einstein,Newton,Madam Curie,Alfred Nobel,Can you match the scientist and the field,of science?,Do you often do experiments in the chemistry,or physics or biology lab?,What do you have to be careful with in a lab?,Well,now lets listen and see what a chemistry,teacher,Mrs,Zhu tells her students to do and,what not to do while working in the science lab.,Before listening,Do you still remember what your teacher often remind you,before,when and after,you do an experiment?,Listen to what Mrs.Zhu is talking to his students for the first time,focusing on the subjects mentioned in the passage,.,Flames,Safety in the lab,Experiments,Long hair,Gases,(Before listening,read through the following ex-,ercises,),Listen to the tape for the first time and tick the things that,Mrs,Zhu talks about.,safety in the lab gloves gases,experiments long hair liquids,car accidents shoes flames,(),(),(),(),(),(),(),(),(),Listening,_,comes first!,_the teachers_.,Dont come in _.,Students with long hair should _it _.Always _ your teachers instructions and dont _ anything _ your teacher tells you to.,Listen to the tape for the second time to write down some key words .,Before the experiment:,Safety,Follow,instruction,without your teacher,tie,up,listen carefully to,touch,unless,During the experiment,can be very dangerous.You should,and carefully it.Never anything.,Be careful about the,.,When working with ,make sure your hands are .,When anything gets into your mouth or eyes,immediately your eyes .,Dont,things or start playing.,Gases,wave,smell,taste,flame,electricity,dry,wash,with a lot of water,throw,After the experiment,everything and the classroom and clean.,your hands with water and .,the lights and the windows.,Clear,away,leave,neat,Wash,soap,Turn off,shut,Listen to the tape again and answer the following questions.,What is the most important thing students,should remember?,(2)What is the first thing students should do,when they come into the lab?,(3)Why should students be careful smelling,from bottles?,(4)What is to be done when anything gets into,your eyes?,(5)What should students do before leaving the,lab?,Safety comes first!,Please check the answers:,What is the most important thing students,should remember?,(2)What is the first thing students should do,when they come into the lab?,Follow the teachers instructions.,(3)Why should students be careful smelling,from bottles?,Because bottles may contain dangerous gases.,(4)What is to be done when anything gets into,your eyes?,Immediately wash your eyes with a lot of,water.,(5)What should students do before leaving the,lab?,Clear everything away and leave the classroom,neat and clean.Wash your hands with water,and soap.Turn off the lights and shut the,window.,DOS,DONTS,Follow,/teachers,/instructions,Dont come into,/without,Be careful about,/when,Dont touch/unless,Always,listen carefully to,Dont throw/unless,Cleanaway and leave clean and neat,Dont forget to,You,should,tieup,Never,put/nose directly into,Remember that,Never put/fingers into/and taste,Make sure that,Now list what you can do and cant do in a lab as much as possible.,Discussion,It suddenly starts raining with thunder and lighting.What are the things you should do and what are the things you should not do?,You want to do a science experiment in a physics class.Remember the safety instructions from the physics lab and,practise,them in English.,You want to go on a hiking trip in the mountains.What are the things you should do and what are the things you should not do?,Situations:,1,2,3,Situation1:,You are in a thunderstorm,Dos:,If you are outdoors,go home or to a safe place as quickly as possible.,Stay indoors if you are at home.,Close the windows if you are in a car.,Keep your body low to the ground.,-,Donts:,Dont shelter in small buildings.,Dont stand under trees.,Dont use electrical machines.,Dont take a bath or shower.,-,back,Physics experiment,Dos:,Be on time before the experiment starts.,Carefully follow all instructions.,Check all the instruments to see if they are OK.,Keep the lab clean.,-,Donts:,Dont touch the instruments before the experiment starts.,Dont leave the lab without the teachers permission.,Dont take anything from the lab.,-,back,Hiking trip,Dos:,Wear good shoes and clothes.,Bring a backpack.,Tell someone else where you are going.,Bring water and a map.,Watch out for dangers such as snakes.,Wear a hat,Bring a cell phone.,-,Dont s:,Dont go alone.,Dont take unsafe roads.,Dont go on if you arent felling well.,-,back,consolidation,Have a discussion to find out the best rules for the lab and,recommend,it to the school leader.,Speaking,Now look at the pictures of some discoveries,and applications.,maglev train,cloning,nuclear energy,computers,space flights,Maglev train has no wheels and no,engine.Its fast and clean and it,doesnt make any noise.Compared,with many other transports such as,buses or trains,it causes much less,pollution.But some people think,maglev train is much too expensive.,Its a waste of money.,Now discuss the advantages and disadvantages of the following scientific discoveries and applications.,Cloning,Nuclear energy,Computers,Space flights,Advantages,Disadvantages,cloning,advantages,It is useful.,It can save some rare species so that many animals will not die out;especially its useful in medicine.disadvantages,It may be dangerous.,It can bring some side effects to society if not used properly.,Nuclear energy,advantages,It is useful.,It can save some rare species so that many animals will not die out;especially its useful in medicine.,disadvantages,It may be dangerous.,It can bring some side effects to society if not used properly.,Computers,advantages,1.Makes communication faster,2.Can keep information better,disadvantages,Unsafe because of viruses,Makes more problems than it solves,Space,flights,advantages,Makes research of outer space possible,Put communication in space,disadvantages,Expensive and dangerous,Used by the army,Finish WB Talking and,practise,giving instructions.,2.Preview Speaking and try to search for some information abut the new inventions and discoveries.,