U4P4Listeningexercise.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Listening,Unit 4,Astronomy:the science of the stars,Pre-listening,Do you know the following scientists?,Who are they?,What have they discovered?,Isaac Newton,牛顿,16421727,Universal gravitation,万有引力,经典物理学理论体系的建立者。,1665,年创立微分；,1666,年开始研究积分。,1666,年,开始想到研究重力,(gravity),问题，苹果落地的传说，也是在此时发生的轶事。其一生的重大科学思想是在这两年期间（,22,至,23,岁）岁形成的。,1669,年，把,自然哲学的数学原理,，,宇宙体系,),等手稿送到剑桥大学图书馆收藏。晚年研究宗教。,Einstein,Albert(1879-1955),爱因斯坦,Relativity,（,相对论）,and the Cosmos,（,宇宙）,质量,(,m,),和能量,(E),的相当性：,E,mc2,爱因斯坦,在量子论、分子运动论、相对论,(,Theory of Relativity,),等物理学的三个不同领域取得了历史性成就，特别是狭义相对论的建立和光量子论的提出推动了物理学理论的革命，他对社会进步事业也有重要贡献。,The theory about black holes,（,黑洞理论）,1942-,霍金,斯蒂芬,霍金,是当今科学界的一位传奇性人物。这不仅仅因为他是一位被誉为继爱因斯坦后最著名的科学思想家和最杰出的理论物理学家，还在于他是在常人无法想象的身体状况下进行研究和创造性工作的。,black hole,黑洞,黑洞,并非只是吞噬物质。除了会在星系形成的过程中扮演重要角色外，在经过一段相当漫长的时间后，黑洞也会把一些曾被它吸入的物质信息向外界释放出来。,Listen to,Part 1,.,Using Language,THEORIES OF GRAVITY,Michael Jones of New Space Magazine is talking with space,traveller,Li,Yanping,about changes in the theory of gravity.,LY=Dr Li,Yanping,MJ=Dr Michael Jones,While-listening,MJ:,Hello,Dr Li,Yanping,.Its so good of,you to talk to me.Some _ ask us,why things always fall back to _ if,you throw them up in the air.Could,you _ it?,LY:,Well,at first people thought it was,because the earth was the _ of the,universe.Of course that was _.,One day Isaac Newton watched an _,Listen again and fill in the blanks.,students,earth,explain,centre,wrong,apple,fall to the ground.He said that,something else must be _ the apple,back to Earth.He called it“gravity”.,MJ:,I see.Did people _ his idea?,LY:,They did.Later they worked out that,_(like the sun)objects have stronger gravity than _ objects,(like our planets).If youre,travelling,in,_ space,you couldnt fall back to the,earth.Youre just too far _.,pulling,accept,bigger,smaller,deep,away,Listen to Part 2.,MJ:,Does it mean theres no _ in space?,LY:,No.In a spaceship you would feel the,pull as it got _ to such an object.,You would travel faster and faster,_ it.,MJ:,Until you hit it?,LY:,Not exactly.You may _ it very fast,and then it would throw you out into,space again.After that you would slow,down to the _ speed.,Listen again and fill in the blanks.,gravity,closer,towards,pass,usual,MJ:,How do you know this?,LY:,In _ Einstein said that in space large,objects make space-time bend;the,larger the object,the _ space-time,bends.So time goes _ in very,strong gravity.,MJ:,What about _ holes?,LY:,Thats a place in space which has such,a strong _ that nothing can escape,_ its gravity.There is a kind of edge,1905,further,slower,black,mass,from,around this mass.If you cross over this edge,its _ for you to get back.However if you dont cross this edge,you can still _.Stephen Hawking has done a lot of _ into black holes.He has shown that they“spit”things out as _ as“eat”them.,impossible,escape,research,well,Which is the best for giving the main idea of the listening text?,Post-Listening,1.I heard about how three men wanted to find out about the beginning of the universe.,The three scientists wanted to explain how the universe worked and not how it began.,Not true.,2.I heard about how the idea of gravity has developed over a long period of time.,The best one.,3.I heard about three scientists and their work.,This does not give enough detail about what the listening passage is about.,Too general,Thank you.,