高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists课文配套课件ppt

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Learning bjectives
By the end f this sectin, yu will be able t:1. learn abut activities related t science;2. learn t predict what yu will hear by using pictures;3. practise listening fr gist and details;4. talk abut museum activities r scientific research r experiment.
Lk at the phts belw, and discuss in grups what these activities have t d with science.
I think the dish in this exhibitin is related t sund. Maybe the by is whispering int the smaller circle and the dish can make his vice luder.
Sample Answer
This lks like a pian yu play with yur feet. Maybe it shws hw sund wrks.
I’m nt sure what this ne shws, but it must be abut light r eyesight.
It is a hall f mirrrs. Maybe it has t d with the principles f reflectin.
This is prbably an experiment invlving the cmpsitin f light.
1. Where are the peple in the cnversatin ging t g?2. What kind f place is it, and what des it fcus n?3. What kinds f things can yu d there?
They are ging t a science museum.
It is a science museum that fcuses n letting visitrs experience science thrugh interactive learning exhibitins.
Yu can prbably try different activities t learn abut sund, light, reflectin, and s n. Fr example, yu can g t a rm with many mirrrs faxing each ther s it lks like there are many cpies f yu! Or yu can play with a big pian n the flr.
1. ______________________2. ______________________3. ______________________4. ______________________5. ______________________
Predict by using picturesOne way t get mre ut f yur listening is t predict what yu will hear. Using the pictures prvided and the knwledge yu already have, yu can guess the kinds f infrmatin yu shuld listen fr. At times, yu may even be able t guess exactly what will be talked abut. This will help yu fcus better when listening, making yur listening mre effective.
Listen again and cmplete the descriptins f the phts abve.
A giant dish; when yu speak int it, it __________ the sund back and _________________. Yu can use it t speak in a __________ t smene 17 metres away.
A giant _______________ that yu can use yur feet t play. Instead f playing the sund f a pian, it plays the vices f _____________.
Yu lk at a blue screen fr a while, and then suddenly yu can see ______________ mving arund n it. These are ur _____________.
A _____________ where yu can see yurself reflected thusands f times.
Yu stand in frnt f __________, and it casts different shadws f yu, in ______________ the rainbw.
makes it luder
pian keybard
tiny bright lights
classical singers
wn bld cells
every clur f
hall f mirrrs
a white light
Listen again and fill in the blanks.
Judy: Oh, I’m s srry that yu were ill and culdn’t cme with us n ur ______ trip. Hw are yu feeling nw? Better?Bill: Much better, thanks. But hw was it?Judy: Wnderful! I especially liked an area f the museum called Light Games. It was really cl. They had a hall f mirrrs where I culd see myself reflected ________ f times!Bill: A hall f mirrrs can be a lt f fun. What else did they have?Judy: Well, they had an _________ where we lked at a blue ________ fr a while, and then suddenly we culd see tiny bright lights mving arund n it. Yu’ll never ________ what thse bright lights were!Bill: Cme n, tell me!Judy: They were ur bld cells. Fr sme reasn, ur eyes play ________ n us when we lk at a blue screen, and we can see ur wn bld cells mving arund like little lights! But there was anther thing I liked better. I std in frnt f a white light, and it ________ different shadws f me, in every clur f the ________!Bill: Oh, I wish I had been there. Tell me mre!Judy: Well, they had anther area fr sund. They had a giant pian ________ that yu culd use yur feet t play. But then, ________ f playing the sunds f a pian, it played the vices f ________ singers! Then they had a giant dish, and when yu spke int it, it reflected the sund back and made it luder. Yu culd use it t speak in a ________ t smene 17 metres away.Bill: It all sunds s cl. I wish I culd have gne with yu.Judy: I knw, but we can g tgether this weekend. I’d lve t g there again!Bill: That sunds like a great idea!
Discuss the fllwing questins in grups.
The cnversatin is abut the City f Science and Industry, a museum in Paris. Wuld yu like t g t this museum? Why r why nt?Are there any museums like this in China? What ther interesting museums are there?
Yes. The exhibitins seem really interesting. I think I wuld learn a lt there.
Yes. Fr example, there is the China Science and Technlgy Museum in Beijing and the Shanghai Science and Technlgy Museum.
In grups, chse ne f the museum activities n the previus page r brainstrm anther scientific research r experiment that yu are interested in. And then make a shrt presentatin t the class abut yur chice. Use the example and useful phrases belw t help yu.
Tday, I want t talk t yu abut a very strange phenmenn called a nn-Newtnian fluid. Yu can make it easily using equal parts f water and crnflur, like I have here. A nn-Newtnian fluid is strange because yu can pur it like a liquid, but if yu put any pressure n it, it suddenly becmes hard as cncrete. In fact, it becmes lard enugh t stand n. Then, as sn as yu take the pressure ff, it becmes a liquid again. This shws that it is pssible smething can exist as a liquid and a slid at the same time.
... can/cannt exist in the frm f a slid/gas and a liquid/plasma is bth a ... and a ... at the same time ... hw light/sund is reflected the existence f ther ... This ccurs when ... If yu ..., it will becme demnstrates ... This experiment/research shws this, we knw that ... We can prve that ... This evidence prves ...
Talking abut scientific phenmena
Tday, I want t talk t yu abut the psitive and negative charges f mlecules. We can demnstrate hw these interact thrugh a simple experiment using milk, dish sap, and fd cluring. First, cver the bttm f a shallw plate with milk. Nw add tw r three drps f different liquid fd cluring t the centre f the milk. They shuld frm ne large dark puddle in the middle f the milk. Nw, dip a cttn swab int dish sap, and place it int the middle f the fd cluring. Yu will see the clurs quickly mve t escape frm the sap, making interesting and beautiful patterns. This happens because the dish sap mlecules have a strng negative charge, and the milk mlecules have a strng psitive charge. Like magnets, these mlecules are attracted t each ther, and s they appear t mve arund n the plate, taking the fd cluring with them, making it lk like the clurs are quickly mving t escape frm the sap.
Sample Presentatin
Wrds and Expressins
Yu stand in frnt f a white light, and it casts different shadws f yu, in every clur f the rainbw. (P6) 你站在一束白光面前，它以彩虹的每一种颜色投射出不同的你的影子。cast /kɑːst/ vt. 投射；向……投以（视线、笑容等）；投掷 例句She cast a welcming smile in his directin. 她向他微笑以示欢迎。 The setting sun cast an range glw ver the muntains. 橘红色的夕阳辉映着群山。The sad news cast a shadw ver the prceedings. 这个坏消息给事件的进程蒙上了一层阴影。
Yu stand in frnt f a white light, and it casts different shadws f yu, in every clur f the rainbw. (P6) 你站在一束白光面前，它以彩虹的每一种颜色投射出不同的你的影子。shadw /ˈʃædəʊ/ n. 阴影；影子；背光处 搭配in the shadw f 在……的阴影下，在……的光环下；在……附近例句The children were having fun, chasing each ther’s shadws. 孩子们追逐着彼此的影子，玩得很开心。 The shadws lengthened as the sun went dwn. 随着太阳西下，影子越拉越长。He didn’t want t cast a shadw n their happiness. 他不想给他们的幸福蒙上阴影。
Yu stand in frnt f a white light, and it casts different shadws f yu, in every clur f the rainbw. (P6) 你站在一束白光面前，它以彩虹的每一种颜色投射出不同的你的影子。rainbw /ˈreɪnˌbəʊ/ n. 彩虹 例句In the rainbw, ne clr melts int anther. 在彩虹中，各种颜色互相交融。 When the sun shines thrugh a light rain, it makes a rainbw. 当太阳的光线穿过小雨时便形成了彩虹。 At sight f the rainbw, the children were mre glad than the parents. 看见彩虹，孩子们比大人更高兴。
A nn-Newtnian fluid is strange because yu can pur it like a liquid, but if yu put any pressure n it, it suddenly becmes hard as cncrete. (P7) 非牛顿流体很奇怪，因为你可以像液体一样倾倒它，但如果你对它施加任何压力， 它会突然变得像混凝土一样坚硬。pur /pɔː(r)/ vt. 倒出；倾泻；斟（饮料） 搭配pur ut 倾吐；诉说 pur in 大量地涌入；倾倒；蜂拥而来例句Tears pured dwn his cheeks. 眼泪顺着他的面颊簌簌地落下。 The rain cntinued t pur dwn. 大雨哗哗地下个不停。Althugh I pured it carefully, I still spilt sme. 尽管我倒这东西很小心，还是洒了一些。
A nn-Newtnian fluid is strange because yu can pur it like a liquid, but if yu put any pressure n it, it suddenly becmes hard as cncrete. (P7) 非牛顿流体很奇怪，因为你可以像液体一样倒入，但如果你对它施加任何压力， 它会突然变得像混凝土一样坚硬。cncrete /ˈkɒŋkriːt/ n. 混凝土 adj. 混凝土制的；确实的；具体的搭配in the cncrete 实际上，具体的例句It is easier t think in cncrete terms rather than in the abstract. 结合具体的事物来思考要比抽象思考容易些。 Each flr is a single thickness f cncrete. 每层地板仅为一层混凝土。They frmed a bat ut f cncrete. 他们用混凝土造了一艘船。