Unit 1 Science and Scientists Using Language (I) （ppt课件）-2024新人教版（2019）《高中英语》选择性必修第二册.pptx

1、Unit 1Period 3 Using Language(I)Talk about scientific experiences新 课 导 入China Jiaolong Submarine China Sky Eye Telescope The Beidou Navigation Satellite System学习目标学习目标1.能学会使用图片进行预测，获取听力对话中的线索和关键信息；2.能学会谈论常见的科学现象。课 堂 学 习Pre-listeningLook at the photo below,and discuss in groups what these activities

2、have to do with science.I think the dish in this exhibition is related to sound.Maybe the boy is whispering into the smaller circle and the dish can make his voice louder.AThis looks like a piano you play with your feet.Maybe it shows how sound works.BIm not sure what this one shows,but it must be a

3、bout light or eyesight.CIt is a hall of mirrors.Maybe it has to do with the principles of reflection.This is probably an experiment involving the composition of light.DEThe photos above are related to the conversation you will hear.Using the photos,try to predict the answers to the following questio

4、ns.21 Where are the people in the conversation going to go?2 What kind of place is it,and what does it focus on?3 What kinds of things can you do there?Predict by using picturesOne way to get more out of your listening is to predict what you will hear.Using the pictures provided and the knowledge yo

5、u already have,you can guess the kinds of information you should listen for.At times,you may even be able to guess exactly what will be talked about.This will help you focus better when listening,making your listening more effective.1 Where are the people in the conversation going to go?2 What kind

6、of place is it,and what does it focus on?3 What kinds of things can you do there?You can probably try different activities to learn about sound,light,reflection,and so on.For example,you can go to a room with many mirrors facing each other so it looks like there are many copies of you!Or you can pla

7、y with a big piano on the floor.They are going to a science museum.It is a science museum that focuses on letting visitors experience science through interactive learning exhibitions.Listen to the conversation and see if your answers for Activity 2 are correct.Then write down the letters(A-E)for the

8、 photos in the order that you hear them described.3While-listening1._ 2._ 3._4._ 5._DCEBAListen again and complete the descriptions of the photos above.4Photo A:A giant dish;when you speak into it,it _ the sound back and _.You can use it to speak in a _ to someone 17 meters away.Photo B:A giant _ th

9、at you can use your feet to play.Instead of playing the sounds of a piano,it plays the voices of _.Photo C:You look at a blue screen for a while,and then suddenly you can see _ moving around on it.These are our _.Photo D:A _ where you can see yourself reflected thousands of times.Photo E:You stand i

10、n front of _ and it casts different shadows of you,in _ the rainbow.reflectsmakes it louderwhisperpiano keyboardclassical singers tiny bright lightsown blood cellshall of mirrorsa white lightevery color ofPost-listeningDiscuss the following questions in groups.51.The conversation is about the City o

11、f Science and Industry,a museum in Paris.Would you like to go to this museum?Why or why not?2.Are there any museums like this in China?What other interesting museums are there?Yes.I can learn a lot about science and it can broaden my horizons.Yes.There are other interesting museums such as art museu

12、m or museum about ancient treasure.In groups,choose one of the museum activities on the previous page or brainstorm another scientific research or experiment that you are interested in.6water plants5G technology life force energy.Make a short presentation to the class about your choice.Use the examp

13、le and useful phrases below to help you.7EXAMPLEToday,I want to talk to you about a very strange phenomenon called a non-Newtonian fluid.You can make it easily using equal parts of water and cornflour,like I have here.Anon-Newtonian fluid is strange because you can pour it like a liquid,but if you p

14、ut any pressure on it,it suddenly becomes hard as concrete.In fact,it becomes hard enough to stand on.Then,as soon as you take the pressure off,it becomes a liquid again.This shows that it is possible that something can exist as a liquid and a solid at the same time.can/cannot exist in the form of a

15、 solid/gas and a liquid/plasma.is both a.and a.at the same time.how light/sound is reflected.the existence of other This occurs when.If you.,it will become.That demonstrates This experiment/research shows.Through this,we know that.We can prove that.This evidence provesSampleToday,I want to talk to y

16、ou about the positive and negative charges of molecules.We can demonstrate how these interact through a simple experiment using milk,dish soap,and food colouring.First,cover the bottom of a shallow plate with milk.Now add two or three drops of different liquid food colouring to the centre of the mil

17、k.They should form one large dark puddle in the middle of the milk.Now,dip a cotton swab into dish soap,and place it into the middle of the food colouring.You will see the colours quickly move to escape from the soap,making interesting and beautiful patterns.This happens because the dish soap molecu

18、les have a strong negative charge,and the milk molecules have a strong positive charge.Like magnets,these molecules are attracted to each other,and so they appear to move around on the plate,taking the food colouring with them,making it look like the colours are quickly moving to escape from the soa

19、p.shadow n.阴影；影子；背光处Eg:You stand in front of a white light,and it casts different shadows of you,.你站在一道白光前，它投射出不同的你的影子，Key points归纳拓展 shadow与与 shadeshadow指某物在光线的照射下映在墙上、地上等处的阴影。shade表示光线照不到的地方或阴凉处。即学即练 辨析填空：shadow,shade1.In front of our house stands a tall tree,which provides _ for us in summer.2.Th

20、e children were having fun,chasing each others _.shade shadowspour vt.倒出；倾泻；斟（饮料）Eg:A non-Newtonian fluid is strange because you can pour it like a liquid,but if you put any pressure on it,it suddenly becomes hard as concrete.非牛顿流体很奇怪，因为你可以把它像液体一样倒出来，但如果你对它施加压力，它会突然变得像混凝土一样硬。归纳拓展pour in涌进pour into 涌

21、进pour out 倒出；涌出；倾诉pour out of.从中涌出来pour down（雨）倾盆而降即学即练 单句语法填空1.The rays of the sun poured _ through the window.2.The river pours _ the sea.3.Sobbing,she poured _ the whole story.4.He was seriously wounded.Blood poured out _ the wound.inofintoout课堂总结课堂总结Can you describe common scientific phenomena now?