人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists课文ppt课件

这是一份人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists课文ppt课件，共23页。PPT课件主要包含了Homework等内容，欢迎下载使用。
Learning bjectives
In this class, students willget infrmatin abut Judy’s experience in the scientific museum;talk abut different scientific experiences.Brainstrm scientific research and experiment
Pre-listening
What can yu see in the picture?What is he/she ding?Why is he/she ding that?
Activity 1: Lk at the phts and talk abut what these activities have t d with science.
At a party?
In a restaurant?
In a stadium?
In a museum?
In a theatre?
Where are they? Why d yu think s?
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.
B. This lks like a pian yu play with yur feet. Maybe it shws hw sund wrks.
a hall f mirrrs reflect
a blue screen bright lights
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 d with the principles f reflectin.
a white lightcast shadwsin the clur f the rainbw
E. This is prbably an experiment invlving the cmpsitin f light.
Activity 2: 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?
They are ging t a science museum.
A place fr delight, educatin and inspiratin. Scientific phenmena/discveries n sund and light.It is a science museum that fcuses n letting visitrs experience science thrugh interactive learning exhibitins.
3. What kinds f things can yu d there?Interactive activities t experience/experiment/explre.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.
(2) Write dwn the letters (A-E) fr the phts in the rder that yu hear them.
1 ________ 2 ________ 3 ________ 4 ________ 5 ________
Activity 3：(1) Listen t the cnversatin t check yur predictin in Activity 2.
While-listening
a hall f mirrrssee myself reflected thusands f times
a blue screentiny bright lightsbld cells
a white lightcast different shadwsin every clur f the rainbw
a giant pian keybarduse yur feet t playplay vices f classical singers
a giant dishreflect the sund backspeak in a whisper17 metres away
Activity 4: Listen again and cmplete the descriptins f the phts abut scientific experiences in the cnversatin.
makes it luder
pian keybard
classical singers
tiny bright lights
wn bld cells
hall f mirrrs
a white light
every clur f
Activity 5: Fill in the blanks with the wrds and expressins in the bx t finish the summary f the cnversatin.
Pst-listening
Judy had __________ t a science museum with her classmates last week. First she went t an area fr _____. In ________________ Judy saw herself reflected thusands f times.
a hall f mirrrs
a field trip
She als ________________ a blue screen and saw her wn _________ mving arund like _______________.
experimented with
The thing Judy liked better was that a white light _____________ ____________ f Judy in every clur f ___________. Later Judy went t the area fr ______.
cast different
Judy played a giant ______________ with her feet, and it even prduced the vices f classical singers. She als played a giant dish, which ________ the sund back and made it luder s that yu culd _________ t smene 17 metres away.
Activity 6: Talk abut smething mre n the scientific museum (Page 7, Activity 5).
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, there are, fr example, the China Science and Technlgy Museum in Beijing and the Shanghai Science and Technlgy Museum.
Yes.I wuld like t g t this museum t see the blue screen. I am curius t knw what n earth is ging n there and why I can see my bld cells mving arund like tiny bright lights. I am sure it will be a lt f fun.
N.It is nt cnvenient because it is t far frm China and there is n need t g s far when we have s many interesting places at hme.We can’t speak French and will have truble in understanding what t d there.
Let's talk abut scientific phenmena
Tday, I want t talk t yu abut a very strange phenmenn called a nn-Newtnian liquid. 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 hard enugh t stand n. Then, as sn as yu take the pressure ff, it becmes a liquid again.This shw that it is pssible that smething can exist as a liquid and a slid at the same time.
Pst-listening: Sample Study
(1) Brainstrm a scientific research r experiment (Page 7, Activity 6 & 7).
1. What scientific phenmenn is the example abut?A nn-Newtnian fluid.2. D yu knw the phenmenn? Where did yu knw it?Yes. In TV prgrams r bks.3. What ther scientific research/experiments have yu ever dne r read abut?Fr example: the psitive and negative charges f mlecules.
Activity 7: Talk abut the scientific research r experiment that yu are interested in.
Pst-listening: talk abut scientific phenmena
(2) Read the expressins t talk abut scientific phenmena (Page 7).
EXAMPLETday, I want t talk t yu abut a very strange phenmenn called… Yu can make it easily using … This shws that…
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. Make a shrt presentatin abut the scientific research r experiment. 2. Use the example and useful expressins in Activity 7 n page 7 t help yu.