北师大版九年级全册Lesson 22 Famous Discoveries完美版ppt课件

这是一份北师大版九年级全册Lesson 22 Famous Discoveries完美版ppt课件，文件包含Unit8Lesson22FamousDiscoveries课件pptx、Unit8Lesson22FamousDiscoveries教案docx等2份课件配套教学资源，其中PPT共26页， 欢迎下载使用。

Have yu seen this picture? What’s this?
NASA n 23rd, July annunced the discvery f Kepler-452b, the mst Earth-like planet ever fund. Lcated 1,400 light-years frm ur planet, NASA called it “Earth 2.0”, because it’s the first planet discvered in the habitable zne f a G star similar t ur sun.
7月23日，美国国家航空航天局(简称为NASA)宣布发现开普勒-452b，是迄今为止与地球最为相近的行星。该行星距离地球1400光年，NASA将其命名为“地球2.0”，因为它是第一颗人类在宜居带里与太阳相似的恒星附近发现的行星。
1.与太阳相似的恒星被发现
这颗系外行星编号Kepler 452b，其直径约为地球的1.6倍，与恒星之间的距离与日-地距离相近。恒星Kepler 452距离地球大约430秒差距(约合1400光年)，位于天鹅座。　　天文学家称，这是至今为止发现的最接近地球的“孪生星球”，跟地球的相似指数为0.98，并且有可能拥有大气层和流动水。　　NASA说这个星球上可能有活火山，有存在生命的可能性，行星应该有60亿年历史，地球为45亿年。
An internatinal team f scientists said they have discvered the farthest galaxy ever measured in the universe.By using a pwerful instrument called MOSFIRE n the Keck I telescpe at the Keck Observatry in Hawaii, the team thught that the galaxy, EGS-zs8-1, frmed mre than 13 billin years ag at a time when the universe was nly five percent f its present age.
科学家使用位于夏威夷的凯克天文台的望远镜发现了新星系，并将这个星系命名为EGS-zs8-1。它是迄今发现的最遥远星系，打破了此前的观测纪录。
2.宇宙中最遥远星系被发现
What are the peple ding in the fllwing pictures? What d yu think they are trying t discver?
Example: I think the persn in Pht A is bserving the stars. Maybe he is trying t discver a new star.
Key Wrds: Discveries chemistry, d experiments, electricity, health, lab, machine, bserve, physics, research, space, technlgy
Listen and practice.
1.D yu knw any ther scientific discveries?2.Can yu name sme famus nes?3. Amng these discveries, which d yu think are the mst imprtant nes?
Lk at yur wrksheet after class. PPT(26—32)
D yu knw any f them? What’s their majr achievements?
Tu Yuyu has becme the first Chinese wman t win a Nbel Prize(2015), fr her wrk in helping t create an anti-malaria (['æntiːməl'eəriə] 抗疟疾的 ) medicine.
屠呦呦 (1930--)药学家抗疟疾:青蒿素和双氢青蒿素
2. Many children died very yung because f different diseases. Nw it can be cured(治愈) easily with it.
1. It’s a discvery in physics（身体）. It can g right thrugh sme things like skin(皮肤） and wd but stp by bnes r metal.
3. It’s the building blck f life and we knw a great deal abut what we get frm ur parents frm it.
Read and find the name f the picture A,B and C and make sure whether yur match is right r nt.
The first antibitic: Penicillin 青霉素，盘尼西林 It can wipe ut the infectin消除感染
Alexander Fleming亚历山大·弗莱明
When did these things happen? Write the crrect years.
DNA structureduble ciled spiral structure (双线圈螺旋结构）
Crick Watsn克里克 沃森
Wilhelm Rentgen X-ray
1845---1923Germany
What effect d these discveries have?
A lt f diseases can be cured easily with it.
pass n certain characteristics, be able t treat mre disease.
Dctrs treat brken bnes easily with X-rays machines.
DNA(Crick & Watsn)
X-rays(Wilhelm Rentgen)
1. the building blck f life 2. pass n certain characteristics3. be able t treat mre disease
The text is abut…
A lt f diseases can be cured easily with it.
Can yu answer these questins?
Finish them n the wrksheet.
1. What can cure a lt f diseases easily?What passed n certain characteristics frm parents t children?3. What can scientists knw frm the map f ur DNA?4. Wh was the first t study and name X-ray?5. What prize did the discverer f X-ray award?
Answer the fllwing questins
Antibitics, X-rays. (DNA, maybe in the future.)
1. What can cure a lt f diseases easily?
2. What passed n certain characteristics frm parents t children?3. What can scientists knw frm the map f ur DNA?
It tells them a great deal abut what getfrm ur parents.
4. Wh was the first t study and name X-ray?5. What prize did the discverer f X-ray award?
Wilhelm Rentgen.
The first-ever Nbel Prize in Physics.
1. cure vt. 治愈； 矫正； 解决； 消除He needed surgery t cure a trublesme back injury.2. blck n. 块； 街区； 障碍物，阻碍She walked fur blcks dwn High Street.There is a blck f ice.
Language pints
3. pass n 传递； 去世； 前进； 对…发表（意见）He has written a nte asking me t pass n his thanks. 4. treat v. 对待； 治疗； 处理； 款待Dctrs treated her with aspirin.
If Mary’s hand is cut by a knife fr 3days, what will she d?If yur leg gets hurt in P.E, what shuld yu d?If yu have a headache, what can yu d? “Dctr, can yu explain what antibitic is fr me?” asks ne patient.
If yu’re a dctr, Please treat! (Pair Wrk)
Which discvery d yu think is the mst imprtant accrding t the text?
Example: A: I think X-rays are the mst imprtant discvery.B: Why?A: Because with X-rays, dctrs can help fix brken bnes mre easily. …..