人教版 (2019)必修 第二册Unit 1 Cultural Heritage授课ppt课件

这是一份人教版 (2019)必修 第二册Unit 1 Cultural Heritage授课ppt课件，共17页。PPT课件主要包含了reflects，whisper等内容，欢迎下载使用。
视频：Scientific Phenmena
T get the clues and key infrmatin f the listening cnversatin with the help f predicting by using pictures.T talk abut yur wn scientific experiences and describe cmmn scientific phenmena.
目标一：T get the clues and key infrmatin f the listening cnversatin with the help f predicting by using pictures.
Activity 1: Lk thrugh page 6 and page 7. Find ut the new wrds, and read them in pairs. Then read tgether as a whle and share their usage.
cast, shadw, rainbw, pur, cncrete
Activity 2: Lk at the phts belw, and discuss in grups what these activities have t d with science.
A I think the dish in this exhibitin is related t sund.Maybe the by is whispering int the smaller circleand the dish can make his vice luder.
B This lks like a pian yu play with yur feet. Maybe it shws hw sund wrks.
C I'm nt sure what this ne shws,but it must be abut light r eyesight.
D It is a hall f mirrrs. Maybe it has t dwith the principles f reflectin.
E This is prbably an experiment invlving the cmpsitin f light.
Activity 3: 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?
Suggested Answers:1 They are ging t a science museum.2 It is a science museum that fcuses n letting visitrs experience science thrugh interactive learning exhibitins.3 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.
Activity 4: Task 1 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._________ 2._________ 5._________
Activity 4: Task 2 Listen again and cmplete the descriptins f the phts abve.
Pht 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 metres away,Pht B: A giant ____________ that yu can use yur feet t play. Instead f playing the sunds f a pian, it plays the vices f _____________.Pht C: Yu lk at a blue screen fr a while, and then suddenly yu can see ______________ mving arund n it. These are ur ____________.Pht D: A ____________ where yu can see yurself reflected thusands f times.Pht 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 clur f
What scientific phenmenn des Picture A/B/C/D/E shw? Did yu guess crrectly? Hw did yu make the guess?/Why didn't yu guess crrectly?
A sund/light phenmenn.
目标二：T talk abut yur wn scientific experiences and describe cmmn scientific phenmena.
Activity 1: Discuss the fllwing questins in grups.
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?
Suggested Answers:1 Yes. The exhibitins seem really interesting. I think I wuld learn a lt there.2 Yes. Fr example, there is the China Science and Technlgy Museum in Beijing and the Shanghai Science and Technlgy Museum.
Activity 2: In grups, chse ne f the museum activities n the previus page r brainstrm anther scientific research r experiment that yu are interested in. Use the phrases belw t help yu.
Talking abut scientific phenmena... 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 yu will becme demnstrates ….This experiment/research shws... Thrugh this, we knw that can prve that evidence prves…
After discussing and cmplete the chart.
Activity 3: Make a shrt presentatin t the class abut yur chice. Use the example 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.
Sample Presentatin: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.
Pick ut ne r tw gd presentatins(texts) fr class display.