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

这是一份高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists精品ppt课件，共25页。PPT课件主要包含了Ⅰ重点单词，Ⅱ重点短语等内容，欢迎下载使用。

Befre class
必记写作词汇1.　　　　　　 vt.投射；向……投以(视线、笑容等)；投掷 2.　　　　　　 n.阴影；影子；背光处 3.　　　　　　 n.彩虹 4.　　　　　　 vt.倒出；倾泻；斟(饮料) 5.　　　　　　 n.混凝土 adj.混凝土制的；确实的；具体的6.　　　　　　　　 adj.优秀的；杰出的；明显的 7.　　　　　　 adj.抽象的；理性的 n.(文献等的)摘要
utstanding　
8.　　　　　　 adj.稳定的；平稳的；稳步的 9.　　　　　　 prep.除……之外(还)  adv.而且；此外10.　　　　　　　　 adv.此外；再者 11.　　　　　　 n.改变；转换；轮班  vi.& vt.转移；挪动；转向
furthermre　
识记阅读词汇1.plasma n.　　　　　　　　　　　 2.aerspace n.　　　　　　　　　 3.patritic adj.　　　　　　　　　 
4.aviatin n.　　　　 　　　　　　　　　　 5.jet n. 　　　　　　　　　 6.missile n.　　　　　　　　　 7.trace vt.　　　　　 　 　 n.　 　　　　　　　　 8.cncept n. 　　　　　　　　　 9.astrnmer n.　　　　　　　　　 10.astrnmy n.　　　　　　　　　 11.telescpe n.　　　　　　　　　 
航空制造业；航空；飞行　
串记拓展词汇1. mechanic n.机械师；机械修理工→　 　 　　　 adj.机械的；发动机的；机器的 2. defend vt.保卫；防守；辩解→　　　　　　 n.防卫→　　　　　　 adj.防御的 3. assistant n.助理；助手→　　　　　　 vt.& vi.帮助；协助；援助→　　　　　　 n.帮助；援助 4. leadership n.领导；领导地位；领导才能→　　　　　 vi.& vt.领导；导致→　　　　　  n.领导者；首领→　　　　　  adj.领先的；主要的 
mechanical　
assistance　
5.brilliant adj.聪颖的；绝妙的；明亮的→ 　　　　　　　 n.透明度；亮度；光彩→　　　　　　　 adv.精彩绝伦地；光彩夺目地 6.gifted adj.有天赋的；有天才的；天资聪慧的→　　　 n.天赋；礼物 7.fault n.弱点；过错→　　　　　　 adj.有错误的；有缺点的 8.vivid adj.生动的；鲜明的；丰富的→　　　　　　 adv.清晰地；生动地 
brilliantly　
1.　　　　　　　　　 (战争、打斗等不愉快的事情)突然开始；爆发  2.　　　　　　　　　　 主管；掌管 3.　　　　　　　　　　 患(病)；染上(小病) 4.　　　　　　　　　　 最重要的是；尤其是 5.　　　　　　　　　　 做出决定 6.discurage sb frm ding sth　　　　　　　　　　 7.under ne’s leadership　　　　　　　　　 8.be traced back t　　　　　　　　　 9.pint ut　　　　　　　　　 　　10.benefit frm　　　　　　　　　 
in charge f　
make a decisin　
By the end f this perid, yu will be able t…
1. learn abut the tw great scientists’ lives, deeds and characters；2. summarize the scientific spirit frm Qian Xuesen’s and Stephen Hawking’s stries3. write a cmpsitin abut a famus scientist.
Learning bjectives
Befre listening
A 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.
Lk at the pht belw, and discuss in grups what these activities have t d with science.
C I’m nt sure what this ne shws, but it must be abut light r eyesight.
B This lks like a pian yu play with yur feet. Maybe it shws hw sund wrks.
E This is prbably an experiment invlving the cmpsitin f light.
D It is a hall f mirrrs. Maybe it has t d with the principles f reflectin.
The phts abve are related t the cnversatin yu will hear. Using the phts, try t predict the answers t the fllwing questins.
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 facing each ther s it lks like there are many cpies f yu! Or yu can play with a big pian n the flr.
While listening
P6 3. Listen t the cnversatin and see if yur answers fr Activity 2 are crrect. Then write dwn the letters (A-E) fr the phts in the rder that yu hear them described.
1.__________
4. Listen again and cmplete the descriptins f the phts abve.
Ph A: A giant dish; when yu speak int it, it _________ the sund back and _______________. Yu can use it t speak in a _________ t smene 17 meters away.Ph B: A giant ______________ that yu can use yur feet t play. Instead f playing the sunds f a pian, it plays the vices f _______________.Ph C: Yu lk at a blue screen fr a while, and then suddenly yu can see ________________ mving arund n it. These are ur ______________.Ph D: A_______________ where yu can see yurself reflected thusands f times.Ph E: Yu stand in frnt f ____________ and it casts different shadws f yu, in _______________ the rainbw.
makes it luder
pian keybard
classical singers
tiny bright lights
wn bld cells
hall f mirrrs
a white light
every clr f
1. 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?2. Are there any museums like this in China? What ther interesting museums are there?
Yes . I can learn a lt abut science and it can braden my hrizns.
Yes. There are ther interesting museums such as art museum r museum abut ancient treasure.
Listening text:
Judy: Oh, I’m s srry that yu were ill and culdn’t cme with us n ur field 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 thusands f times!Bill: A hall f mirrrs can be a lt f fun. What else did they have?Judy: Well, they had an experiment where we lked at a blue screen fr a while, and then suddenly we culd see tiny bright lights mving arund n it. Yu’ll never guess what thse bright lights were!Bill: Cme n, tell me!
Judy: They were ur wn bld cells. Fr sme reasn, ur eyes play tricks 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 cast different shadws f me in every clr f the rainbw!Bill: Oh, I wish I had been there. Tell me mre!Judy: Well, they had anther area fr sund. They had a giant pian keybard that yu culd use yur feet t play. But then, instead f playing the sunds f a pian, it played the vices f classical 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 whisper t smene 17 metres away.Bill: It all sunds s cl. I wish I culd have gne with yuJudy: I knw, but we can g tgether this weekend. I'd lve t g there again!Bill: That sunds like a great idea!
Make a shrt presentatin t the class abut yur chice. Use the example and useful phrases belw t help yu.EXAMPLETday, 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. Ann-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 hard enugh t stand n. Then, as sn as yu take the pressure ff, it becmes a liquid again. This shws that it is pssible that 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 the existence f ther… This ccurs when demnstrates …. This experiment/research shws... Thrugh this, we knw that ... We can prve that light/sund is reflected ... If yu will becme 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 clring. First, cver the bttm f a shallw plate with milk. Nw add tw r three drps f different liquid fd clring t the center 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 it int the middle f the fd place clring. Yu will see the clrs 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 clring with them, making it lk like the clrs are quickly mving t escape frm the sap.
1. Preview the passage n page 7.2. Recite the wrds in Unit 1.