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

1、高中英语新人教版选择性必修二XB2U1-1 Listening and Speaking听 说What can you see in the video?Some scientific phenomena.Pre-listening 1.What can you see in the picture?2.What is he/she doing?What does it have to do with science？1.What can you see in the picture?2.What is he/she doing?a boya giant dishThe boy is whis

2、pering into the smaller circle and the dish can make his voice louder.a piano keyboardplay with feetMaybe it shows how sound works.1.What can you see in the picture?2.What is he/she doing?1.What can you see in the picture?2.What is he/she doing?It is a hall of mirrors.Maybe it has to do with the pri

3、nciples of reflection.1.What can you see in the picture?2.What is he/she doing?a blue screen with bright lightsThe boy is staring at the light,it must be about light or eyesight.1.What can you see in the picture?2.What is he/she doing?a white light;cast shadows in the colour of the rainbowThis is pr

4、obably an experiment involving the composition of light.soundStrategy:Predict by using picture：1.Each picture：What is happening？People？how many？action？feelings？Something？look like？Special？Why？2.All pictures：What do they have in common？What do they indicate？lightsoundscience museum.visitors experienc

5、e science through interactive learning exhibitions(互动式学习展览).light While-listeningListen to the conversation and see if your answers for Activity 2 are correct.Then write down the letters(AE)for the photos in the order that you hear them described.1._2._3._ 4._ 5._DCEBAorder:Listen again and complete

6、 the descriptions of the photos above.Photo 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 metres away.Photo B:A giant that you can use your feet to play.Instead of playing the sounds of a piano,it plays the voices of _.Photo C:You look

7、at a blue screen for a while,and then suddenly you can see _ moving around on it.These are our _.PhotoD:A _ where you can see yourself reflected thousands of times.PhotoE:You stand in front of _,and it casts different shadows of you,in _ the rainbow.reflectsmakes it louderwhisperpiano keyboardclassi

8、cal singerstiny bright lightsown blood cellshall of mirrorsa white lightevery color ofActivity 3:Fill in the blanks with the words and expressions in the box to finish the summary of the conversation.piano keyboard a hall of mirrorswhisperblood cellssoundexperimented withthe rainbowreflectedtiny bri

9、ght lightslighta field tripcast different shadows Post-listening Judy had _ to a science museum with her classmates last week.First she went to an area for _.In _ Judy saw herself reflected thousands of times.She also _ a blue screen and saw her own _ moving around like _.Judy played a giant _ with

10、her feet,and it even produced the voices of classical singers.She also played a giant dish,which _ the sound back and made it louder so that you could _ to someone 17 metres away.a field triplighta hall of mirrors piano keyboard a hall of mirrorswhisperblood cellssoundexperimented withthe rainbowref

11、lectedtiny bright lightslighta field tripcast different shadowsexperimented withblood cellstiny bright lightspiano keyboardreflectedwhisperTalk and Share:work in group of 4 and brainstorm a scientific experiment or a phenomenon,then share it with us.positive and negative charges of molecules 正负电荷blo

12、w ballon non-Newtonian fluid非牛顿流体a scientific phenomenon or experiment Post-listeningTalk about scientific phenomenaExample a non-Newtonian fluidToday 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,li

13、ke I have here.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.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 t

14、hat something can exist as a liquid and a solid at the same time.Talk about scientific phenomenaExample a non-Newtonian fluidName:a non-Newtonian fluidOpeningMaterials ProcessTalk about a non-Newtonian fluid(topic)You can make it with water and cornflour(玉米粉)pour.like a liquid,put any pressure on it

15、,suddenly becomes hard as concrete,take the pressure off,becomes a liquid againTheoryThis shows:Something can exist as a liquid and a solid at the same time.Talk about scientific phenomenaPresent Scientific phenomenaOpeningMaterials neededProcessToday I want to talk to you about/share with you a sci

16、entific experiment named/called.We need.;the material we needed is.First,you can.;Then,you need.;Now,add.;You will see.;This occurs when.;If you.,it will become.;how light/sound is reflected.TheoryThis experiment/research shows/proves/demonstrates that.;We can prove that.;The evidence proves.;Through this,we know that.;.can/cannot exist in the form of a solid/gas and a plasma.Make a short presentation to the class.Use the example and useful phrases below to help you.Show time1.Polish Your work.2.自主完成黄本练习册听 说