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1、Welcome to my class,Unit 16 Scientists at work,Period 1,Warming-up&Speaking,Physics Laboratory,Chemistry Laboratory,Biology laboratory,1.Can you give an example of what you learn about for each field of science?,In physics we learn about the laws of the universe.In chemistry we learn about the way d
2、ifferent liquids and materials react with each other.In biology we learn about life on earth.,What English words do you think of for each subject of science?,physics,power,physical change,physics experiment,electricity,gravity,force,matter,energy,Chemistry,substance,element,gas,liquid,chemical chang
3、e,metal,solid,chemistry experiments,biology,microscope,Living thing,animal,being,cell,germ,plant,biology experiment,What do we have to be careful with in a lab?,Listening1.Listen to the tape,tick the things that Mrs Zhu talks about.,safety in the labexperimentscar accidentgloveslong hairshoesgasesli
4、quidsflames,Listen carefully and answer the following questions.,1.What is the most important thing students should remember?Safety comes first.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 bo
5、ttles?Bottles may contain dangerous gas.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
6、 lights and shut the windows.,Maglev train,Advantages:FastCleanDoesnt make any noiseDisadvantageMuch too expensive,Speaking,Speaking-EXAMPLE:,A:Shanghai is the first city in the world to have built a high-speed maglev train,from the city to Pudong Airport.B:Well,in my opinion,its a waste of money.It
7、s much too expensive.A:Its expensive,but very fast.In the future,people can travel from Beijing to Shanghai in a few hours.B:Flying is just as fast.The money would be better spent building more roads or railways in other parts of China.A:More roads and trains mean more pollution.This new train has n
8、o wheels and no engine.Its fast and clean and it doesnt make any noise,as planes do.We should make more use of this technology.,Pair work:Discuss the advantages and disadvantages of the following scientific discoveries and applications,then make dialogues with your partners.,Cloning,Advantages1.can
9、help some women have babies2.can help medical researchdisadvantages1.it is not natural to make people2.dangerous,people use it to do strange things,Nuclear energy,Advantages1.can make all the electricity we need2.is a limitless resourcedisadvantages1.unsafe to all life if not controlled 2.can be exp
10、ensive to build/repair,Computer,Advantages1.makes communication faster 2.can keep information better disadvantages1.unsafe because of viruses2.makes more problems than it solves,Space flights,Advantages1.make research of outer space possible2.put communication satellites in space disadvantages1.expensive and dangerous 2.used by the army,Lets speak together.,Thank you very much,
