人教版（2024）九年级上册（2024）1a-1e课文ppt课件

这是一份人教版（2024）九年级上册（2024）1a-1e课文ppt课件，共40页。PPT课件主要包含了教学目标，-01-，Lead-in，-02-，mysterious，spacecraft，on board，in case，-03-，-04-等内容，欢迎下载使用。
Let’s watch and learn.
Pre-reading
Where d yu prefer t find infrmatin abut space explratin? Chse the nes that are true fr yu.
Wrds and Expressins
adj. 神秘的；奇怪的
n. (pl. spacecraft) 宇宙飞船
在船（或火车、飞机）上
Smething abut the Universe
Explanets refer t planets circling stars besides the Sun. Scientists have discvered thusands f explanets s far. Sme explanets share similar size, temperature and envirnment with Earth. Therefre, scientists guess that liquid water and even life may exist n these planets.
外行星指围绕太阳以外的恒星运转的行星。迄今为止，科学家已经发现了数千颗系外行星。部分系外行星在体积、温度、环境方面和地球十分相似，因此科学家猜测这些星球上或许存在液态水，甚至生命。
黑洞是宇宙中神秘的天体，它拥有极强的引力。在它的引力范围内，任何物质都无法逃离，就连光也不例外，因此我们无法直接观测黑洞。科学家通过观测周边恒星的运动轨迹，判断黑洞的存在。黑洞广泛分布在深邃的宇宙之中。
A light-year is NOT a unit f time. It is a distance. Light travels at the fastest speed in the universe. One light-year means hw far light can travel in ne year. Prxima Centauri is 4.2 light-years away frm Earth. That explains why travelling t ther stars is such a huge challenge.
光年不是时间单位，是距离单位。光速是宇宙最快速度，1 光年代表光一年内走过的路程。比邻星距离地球 4.2 光年，这也解释了为什么前往其他恒星是巨大难题。
While-reading
Read the title and the text quickly. Where wuld yu find an article like this?
Reaching fr the StarsSince the beginning f human histry, peple have lked up at the stars and wndered what they were like. Many ancient cultures believed that these pints f light were frm gds r ther mysterius wrlds. Hwever, as science and technlgy develped, we learnt the truth abut stars. They are real places like ur wn sun, and they are farther away than anyne imagined. This raises the questin: Can we visit the stars ne day?The man-made bject which has travelled farthest frm Earth is Vyager 1. This spacecraft was launched in 1977. In case Vyager 1 is fund by alien life, a special recrd with sunds and pictures frm Earth is carried n bard. It shws wh we are and where we are frm. By 2025, Vyager 1 was ver 25 billin kilmetres frm Earth, but that is still a lng way frm Earth’s secnd-clsest star, Prxima Centauri. That star is 4.2 light years away—abut 40 trillin kilmetres!The challenge f visiting the stars gets even bigger fr space flights with
Passage Analysis
Read again and match each paragraph with its main idea.
Paragraph 1A. Lng distance space travel is difficult fr humans.Paragraph 2B. Humans have lng been curius abut the stars.Paragraph 3C. In the future, it may be pssible t visit a star.Paragraph 4D. N spacecraft has travelled clse t a star.
Let’s read and think!
Since the beginning f human histry, peple have lked up at the stars and wndered what they were like. Many ancient cultures believed that these pints f light were frm gds r ther mysterius wrlds. Hwever, as science and technlgy develped, we learnt the truth abut stars. They are real places like ur wn sun, and they are farther away than anyne imagined. This raises the questin: Can we visit the stars ne day?
The man-made bject which has travelled farthest frm Earth is Vyager 1. This spacecraft was launched in 1977. In case Vyager 1 is fund by alien life, a special recrd with sunds and pictures frm Earth is carried n bard. It shws wh we are and where we are frm. By 2025, Vyager 1 was ver 25 billin kilmetres frm Earth, but that is still a lng way frm Earth’s secnd-clsest star, Prxima Centauri. That star is 4.2 light years away—abut 40 trillin kilmetres!
Scientists, hwever, believe that visiting the stars is nt a cmpletely wild dream. One idea is t have the astrnauts sleep during their jurney, like sme animals d in winter. Anther is t develp much faster spacecraft. While this is nt pssible right nw, with natins and scientists cperating with ne anther, there is hpe that the necessary technlgy will be develped. Humans have phtgraphed ther galaxies, set ft n the mn, and even successfully landed rvers n Mars. It seems likely that ne day we will reach the stars.
The challenge f visiting the stars gets even bigger fr space flights with humans. The farthest that any human has travelled in space is nly abut 400,000 kilmetres, t the far side f the mn. Time is a big prblem. At present, even a jurney t the planet Mars will take arund six t nine mnths. What will the astrnauts eat and drink during this perid? And hw abut their health and safety? These prblems grw when we talk abut visiting anther star. It might take hundreds f thusands f years t get there!
Pst-reading
Cmplete the mind map with the infrmatin frm the text. Yu can use yur wn wrds.
Discuss the questins. Find mre infrmatin t supprt yur answers.
5. What d yu think abut the future f space explratin?
Space explratin will keep develping. New technlgy will be created, but we als need t prtect Earth.
Retell the passage accrding t the mind map.
Since ancient times, humans have been curius abut the stars. As science develped, peple learnt the truth abut them.Vyager 1, launched in 1977, is the farthest man-made spacecraft. It carries a special recrd t shw alien life abut humans. Hwever, travelling t stars is full f challenges. Lng space jurneys take a very lng time, and astrnauts will face prblems with fd, health and safety. Still, scientists d nt give up. They have ideas t slve these prblems. Maybe astrnauts can sleep during the trip, and we can build faster spacecraft. With internatinal cperatin, new technlgy will be develped. It seems pssible that humans will reach the stars ne day.
Let’s think!
LanguagePints
Since the beginning f human histry, peple have lked up at the stars and wndered what they were like. Many ancient cultures believed that these pints f light were frm gds r ther mysterius wrlds. Hwever, as science and technlgy develped, we learnt the truth abut stars. They are real places like ur wn sun, and they are farther away than anyne imagined.This raises the questin: Can we visit the stars ne day?The man-made bject which has travelled farthest frm Earth is Vyager 1. This spacecraft was launched in 1977. In case Vyager 1 is fund by alien life, a special recrd with sunds and pictures frm Earth is carried n bard. It shws wh we are and where we are frm. By 2025, Vyager 1 was
ver 25 billin kilmetres frm Earth, but that is still a lng way frm Earth’s secnd-clsest star, Prxima Centauri. That star is 4.2 light years away—abut 40 trillin kilmetres!The challenge f visiting the stars gets even bigger fr space flights with humans. The farthest that any human has travelled in space is nly abut 400,000 kilmetres, t the far side f the mn. Time is a big prblem. At present, even a jurney t the planet Mars will take arund six t nine mnths. What will the astrnauts eat and drink during this perid? And hw abut their health and safety? These prblems grw when we talk abut visiting anther star. It might take hundreds f thusands f years t get there!
Scientists, hwever, believe that visiting the stars is nt a cmpletely wild dream. One idea is t have the astrnauts sleep during their jurney, like sme animals d in winter. Anther is t develp much faster spacecraft. While this is nt pssible right nw, with natins and scientists cperating with ne anther, there is hpe that the necessary technlgy will be develped. Humans have phtgraphed ther galaxies, set ft n the mn, and even successfully landed rvers n Mars. It seems likely that ne day we will reach the stars.
Pictures f ther galaxies ___________ (take) by space telescpes years ag.All the space prblems _____________ (slve) with better technlgy later.A special recrd ____________ (carry) n Vyager 1 fr alien life.Space explratin nt nly brings us knwledge but als _________ (imprve) ur daily life.We are lking frward t ________ (learn) mre abut the deep space.Scientists are wrking hard ________ (find) signs f alien life.
will be slved
was carried