关于天文的论文题目有哪些初中英语
关于天文的论文题目有哪些初中英语
Black Holes(黑洞)Black holes are some of the strangest things in A black hole sucks in anything that gets near Nothing can escape from a black hole—not even BLACK HOLES ARE STRONGNothing escapes from a black hole because its gravity is so Gravity is a force that pulls one thing to Gravity is the force that holds you down on E When you jump up, Earth’s gravity pulls you right back Earth’s gravity also makes the Moon orbit (go around) EThe more matter (stuff) that is packed in a star, planet, moon, or other object, the stronger is its Gravity makes an object with more matter pull an object with less matter toward The Sun has a lot more matter than E The Sun’s gravity pulls on E It makes Earth orbit the SMatter is packed very tightly in some things and loosely in The matter that makes up an iron ball is packed much tighter than the matter that makes up a bag of A scientist would say that an iron ball is much denser than a bag of A black hole is denser than anything you could A black hole could have a million times more stuff than our S All of this stuff would be packed into an area smaller than a The force of gravity from so much stuff packed into such a small area is WHERE DO BLACK HOLES COME FROM?Astronomers and physicists think black holes come from dying A dying star burns out and stops All the stuff that makes up the star starts falling in on The star gets denser and If the star is big enough and has enough matter, it could get dense enough to become a black STUDYING BLACK HOLESNo one has really seen a black You cannot see black holes because they do not give off any kind of Physicists used math to predict that black holes Astronomers look for signs of black Astronomers study powerful rays coming from stars in deep The stars seem to be orbiting black Astronomers think that black holes are sucking gas from the stars, and this makes the stars give off X Galaxies are enormous groups of Astronomers think that most galaxies have huge black holes at their The Hubble Space Telescope took pictures of a disk of hot gases at the center of our own Milky Way G Astronomers think this disk is going around an enormous black hole right in the center of our 黑洞(黑洞)黑洞是在太空的一些奇怪的事。一个黑洞吸入任何靠近它。没有什么能逃脱黑hole-not甚至光。黑洞是强大的没有逃离黑洞因为它的引力是如此的强烈。重力是一股力量,把一件事到另一个地方。重力是地球上把你的力量。当你跳起来时,地球引力把你拉回来。地球的引力也让月球地球轨道(四处)。越多事情(东西),装在一个明星,行星,月亮,或其他对象,它的引力就越强。物体重力使一个对象有更多物质拉向它用更少的问题。太阳比地球更重要。地球上太阳的引力拉。它使地球轨道太阳。问题是包装非常紧密一些事情和松散。这件事让一个铁球比这件事更紧了,一袋羽毛。科学家会说,一个铁球比一袋密集的羽毛。一个黑洞的密度比你能想象的任何东西。一个黑洞可能更多的东西比太阳的一百万倍。所有的这些东西会比城市更小的区域里。这么多东西的重力挤进这么小的区域是可怕的。黑洞来自哪里?天文学家和物理学家认为黑洞来自垂死恒星。垂死的恒星燃烧停止照耀。所有的东西,明星开始下降。星星变得越来越密集的。如果恒星足够大,有足够的物质,它能密度足以成为一个黑洞。研究黑洞没有人真正看到一个黑洞。你看不见黑洞因为他们不发出任何类型的光。物理学家利用数学预测,黑洞的存在。天文学家寻找黑洞的迹象。天文学家研究强大的射线来自恒星外层空间。星星似乎环绕黑洞。天文学家认为,黑洞吸气体从恒星,这使得星星发出X射线。星系是巨大的恒星组。天文学家认为,大多数星系有巨大的黑洞中心。哈勃太空望远镜拍照片的一个磁盘的热气体在我们的银河系的中心。天文学家们认为这个磁盘将在一个巨大的黑洞就在银河系的中心。
The Greek Heavenly Thoughts The Greek was the first recognize the distinction between the natural and the In other words , they found the nature, since then, the cosmology(宇宙学) could never be maintain a system of Gradually, the Greek believed themselves to live in a cosmos, and considered the cosmos to be an entirely natural Besides they saw an order in the The order, to them, not only means an arrange, but also a good order, and also a beautiful, elegant With an optimism(乐观主义), they believed the order, and the cosmos were comprehensible(可知的), and furthermore, could be described in words and When the Greek formed these crucial ideas, some earliest philosophers and scientists were important and The Milesians(米利都学派得的哲学家), including Thales(泰勒斯), Anaximander(阿纳克西曼德), described the cosmos in entirely natural terms for the first Heraclitus(赫拉克立特) insisted that the cosmos worked according to a logos(理性), which mean “word”, “account”, “measure”, and “proportion”, and if we grasp this logos, the cosmos could be understood and described After the Greek accepted the idea that the cosmos was a natural place and comprehensible, some pre-Socratics(前苏格拉底时代德哲学家) overcame some significant conceptual(观念上的) hurdles to achieve a more sophisticated There was the move from a hemispherical(半球形) universe to a spherical(球形) one, and a earth supported by water to supported by air, and then to one which need no In the earlier Greek cosmologies, objects were thought to drop in parallel straight lines from the top of the cosmos to the bottom, this led to the problem why the earth doesn’t fall to the bottom of the cosmos, so in this sort of the cosmos, something is required to support the Then Aristotle placed the earth at the center of the cosmos, there was no the problem of the earth He believed that objects moved to the center of the cosmos, that is the earth The idea that the earth was central and stable dominated Greek astronomy and In Greek minds, it can explain many Firstly, the experience told Greek, if one was in rapid motion, he certainly knew about it, so they thought, if the earth has a daily rotation from west to east, there should be constant wind from east to west; if the earth is in motion around the sun, all objects will sweep off the face of the Secondly, because they had no knowledge of gravity, they believe if the earth in rapid motion, it will disintegrate(解体) Thirdly, if the earth takes up different positions relative to the stars(恒星), there should be a stellar parallax(恒星视差量), one can detect slight changes in the apparent positions of the stars from the When the Greek physics, astronomy, philosophy and common sense all seemed to indicate an immobile earth, there was an important consequence, all of the motions of the heavens were real motions to the earth, not apparent ones due to the motion of the At the outset, Greek observational astronomy was rather divorced(背离) from philosophical speculation about the nature of the Some observed the heavens and took careful notes of what they saw, some produced cosmological models based on general philosophical But no one gave a cosmological model that were anywhere near explaining, in a precise manner, the phenomena that had been The Pythagoreans(毕达哥拉斯学派的哲学家) made the first They believed in the center of the cosmos was a fire, not the sun, the fire was shield from the earth by a body known as the counter The model was vague and speculative, and the earth moves around the fire, and between the fire and earth, there was the counter Plato(柏拉图) produced a slightly better model, had central earth, with the sun, the moon, the five planets and the stars orbiting around Then it was a basic assumption of Greek astronomy and cosmology, if some motions seems not circular or regular, almost all Greek philosophers and scientists would consider these as some combination of several circular and regular Neither of two models could account for two important phenomena relating to the point at which the sun The sun does not always set due west(正西方) Where the sun sets during a year changes from a maximum of 5º north of west to a maximum of 5°north of Solstices(至日,包括冬至、夏至) occur at the maximum points, while equinoxes(分日,包括春分、秋分) occur at the due Later Plato gave the first model that could give a reasonable account for these The model was one of the most important Greek cosmological Plato made the first serious attempt to unite astronomical phenomena and cosmological He insisted that the sun, the moon, have a combination of two regular circular motions, that’s to say, the sun and the moon have a second motion in addition the daily one, offset(偏移) at an angle to As to the five planets, which are wandering in the heaven apparently, Plato gave a similar but more complex The model could give a reasonable explanation approximately, but couldn’t explain the planets exceptive They will progress against the background of the fixed stars over a year or two, or even longer, then they will halt suddenly, and go in the other direction for a while, stop again, after that, progress in the normal Facing a series strange exceptions and motions of the planets, Eudoxus(人名,难以翻译,重要的哲学家、科学家) thought regressively(回归,追本溯源) He was a pupil of Pythagorean, and had a close relationship with P About planets, Plato’s model had two regular circular movements for each planet, Eudoxus gave four circular movements for each In this model, the first sphere (环), generate a daily motion; the second generate the motion along the ecliptic(黄道), the other two produce a pattern like the figure 8 laid on its sides(行星出现在黄道正负8度范围内) Besides, Eudoxus had a record of planets’ motion, and made a good use of mathematics, so compared with Plato’s model, his is more Eudoxus’ model was excellent model for a long time, but there were some inherent Because the distance between the earth and each one of five planets that we can see with naked eyes, always changes, it is not difficult to find that all planets’ size are varying Eudoxus can’t cope with the phenomenon, in his model, the distances between the earth and the planets are constant, that means the size of planets can’t Account for these problems, Ptolemy(托勒密) produced a whole new system which was to last for nearly 1500 The system was based on combination of regular circular motions He gave up concentric(同心圆) sphere model in favor of a system based on a device, the epicycle(本轮,天文模型的一种) The epicycle is a combination of two regular circular motions, but not around the same The center of smaller circle moves around the larger The two circles can produced many complex patterns, because these patterns, Ptolemy was able to explain most problems that beset the concentric sphere model, including the variation of apparent size, the brightness, the velocity(速度) of the Besides the epicycle, Ptolemy made another subtle change, the earth is offset from the center of the sun’s So the model can account for that seasons have slightly different Now before the telescope was invented and new phenomena that can’t be found with naked eyes were detected, the model is the best in the ancient After talking about some important Greek cosmological models, we have to mention an exceptive astronomer, Aristarchus(阿里斯塔克斯) He is the first one who have a revolutionary thinking that the earth is orbiting around the But sadly, we don’t know how and why he can be aware this without any idea about gravity and the phenomena which only can be detected with telescope, only we know he is a follower of A
(流星)(又称 "shooting star" 或 "falling star") 流星体或小冰粒进入大气层后因空气磨擦生热产生的在空中的光亮条。较大的流星称作火球和火流星。Mars(火星)和太阳一样有鲜红的颜色,火星为距太阳第四远,也是太阳系中第七大行星Comet(彗星)(月球)Polaris(北极星)sky(天)------------------asteroid(小行星),在太阳系中,除了九大行星以外,在红色的火星和巨大的木星轨道之间,还有成千上万颗肉眼看不见的小天体,沿着椭圆轨道不停地围绕太阳公转,这些小天体就是太阳系中的小行星。arth(地球),月球是围绕地球转动的一颗卫星。它围绕地球公转一周和自转一周所用的时间相同,因此月球永远只有一面对着地球。Neptune(海王星)Uranus(天王星),海王星和天王星显蓝色是其外层大气层中的甲烷吸收了红光的结果。Neptune(海王星)Moon(月球),Mercury(水星),水星外观同月球十分相像,表面布满了大大小小的环形山即沙丘。在亿万年前也许发生过火山活动。水星表面上还到处遍布大大小小的陨星坑。Mars(火星),火星的轨道是显著的椭圆形。(希腊语: 阿瑞斯)被称为战神。这或许是由于它鲜红的颜色而得来的;火星有时被称为“红色行生”。Venus(金星),金星的大气压力为90个标准大气压(相当于地球海洋深1千米处的压力),大气大多由二氧化碳组成,也有几层由硫酸组成的厚数千米的云层。
关于天文学论文题目有哪些初中英语
Black Holes(黑洞)Black holes are some of the strangest things in A black hole sucks in anything that gets near Nothing can escape from a black hole—not even BLACK HOLES ARE STRONGNothing escapes from a black hole because its gravity is so Gravity is a force that pulls one thing to Gravity is the force that holds you down on E When you jump up, Earth’s gravity pulls you right back Earth’s gravity also makes the Moon orbit (go around) EThe more matter (stuff) that is packed in a star, planet, moon, or other object, the stronger is its Gravity makes an object with more matter pull an object with less matter toward The Sun has a lot more matter than E The Sun’s gravity pulls on E It makes Earth orbit the SMatter is packed very tightly in some things and loosely in The matter that makes up an iron ball is packed much tighter than the matter that makes up a bag of A scientist would say that an iron ball is much denser than a bag of A black hole is denser than anything you could A black hole could have a million times more stuff than our S All of this stuff would be packed into an area smaller than a The force of gravity from so much stuff packed into such a small area is WHERE DO BLACK HOLES COME FROM?Astronomers and physicists think black holes come from dying A dying star burns out and stops All the stuff that makes up the star starts falling in on The star gets denser and If the star is big enough and has enough matter, it could get dense enough to become a black STUDYING BLACK HOLESNo one has really seen a black You cannot see black holes because they do not give off any kind of Physicists used math to predict that black holes Astronomers look for signs of black Astronomers study powerful rays coming from stars in deep The stars seem to be orbiting black Astronomers think that black holes are sucking gas from the stars, and this makes the stars give off X Galaxies are enormous groups of Astronomers think that most galaxies have huge black holes at their The Hubble Space Telescope took pictures of a disk of hot gases at the center of our own Milky Way G Astronomers think this disk is going around an enormous black hole right in the center of our 黑洞(黑洞)黑洞是在太空的一些奇怪的事。一个黑洞吸入任何靠近它。没有什么能逃脱黑hole-not甚至光。黑洞是强大的没有逃离黑洞因为它的引力是如此的强烈。重力是一股力量,把一件事到另一个地方。重力是地球上把你的力量。当你跳起来时,地球引力把你拉回来。地球的引力也让月球地球轨道(四处)。越多事情(东西),装在一个明星,行星,月亮,或其他对象,它的引力就越强。物体重力使一个对象有更多物质拉向它用更少的问题。太阳比地球更重要。地球上太阳的引力拉。它使地球轨道太阳。问题是包装非常紧密一些事情和松散。这件事让一个铁球比这件事更紧了,一袋羽毛。科学家会说,一个铁球比一袋密集的羽毛。一个黑洞的密度比你能想象的任何东西。一个黑洞可能更多的东西比太阳的一百万倍。所有的这些东西会比城市更小的区域里。这么多东西的重力挤进这么小的区域是可怕的。黑洞来自哪里?天文学家和物理学家认为黑洞来自垂死恒星。垂死的恒星燃烧停止照耀。所有的东西,明星开始下降。星星变得越来越密集的。如果恒星足够大,有足够的物质,它能密度足以成为一个黑洞。研究黑洞没有人真正看到一个黑洞。你看不见黑洞因为他们不发出任何类型的光。物理学家利用数学预测,黑洞的存在。天文学家寻找黑洞的迹象。天文学家研究强大的射线来自恒星外层空间。星星似乎环绕黑洞。天文学家认为,黑洞吸气体从恒星,这使得星星发出X射线。星系是巨大的恒星组。天文学家认为,大多数星系有巨大的黑洞中心。哈勃太空望远镜拍照片的一个磁盘的热气体在我们的银河系的中心。天文学家们认为这个磁盘将在一个巨大的黑洞就在银河系的中心。
In the Jack? London to write this book - "Call of the Wild", I walked into a dog's Dog named Buck, was a S Bernard and Scotch shepherd dog of mixed The difference is that Barker is not the fantasy of human mythology is full of dogs, nor are interspersed in the human society, the role of dogs as a friend, but in the snow in the northern part of the life stories of dogs shocked with Barker had grown up in the South a judge's home, where Buck enjoying abundant life, universal respect for, and take the crucial importance of status to all human beings in the north because of the yellow metal find a With a somewhat aristocratic atmosphere for the first time Barker has suffered rude treatment, it was sold to a person abducted guys there wear red wool Followed by repeated blow to stick meal, once again to play it From Buck to understand a truth: that holding the stick in front of him there is no I would like to stick that is a key one for Buck to understand the nature of the original key, it learned the rule of law of the jungle of the original rules, while giving the body hidden in the wild Barker is gradually waking If the stick is a key, then Buck's companion is the body of this course, P Barker was again complete the It adds a pull-sled team, and from peers groping in a plethora of Dog Park Church, how it stealing to comfort empty In fact, Barker is not like stealing, in order to be able to eat right and wrong, he can not be Billy from the dog there, Buck quickly learned how to quench their thirst in the snow, ice-breaking techniques such as the Kap S Here I would like to mention a Spitz dog, because from its body, Buck "learning" to a lot, so that in the twilight of the Buck remembered the original Spitz is a dog sled team in the first row, that is, It is to Barker as a potential rival, always provocative finding fault, surface and good, the actual At first, for Sri Lanka are always horses everywhere Ci Bake patient, try to avoid head-on On the one hand, he learn from the other hand, the body's instincts as a provocation revived again and Gnawing the end of their ancestors, tear, and wolf-style assault on it alive to Spitz Doudao Once the wild awake, it cries from the depths of the forest will be constantly tempted with Barker, it was a bleak one weird and tells the people chilling tone, can be very happy to Buck howl along with Powerful primitive animal behavior on it is a growing sense, in a hunt, the Buck tasted kind of bloodthirsty lust and pleasure gained by killing eventually become a long long The existence of competition in human society and human with the spirit of upward is a manifestation of the ancient wild Wild, is that it brings the desire to conquer all things and Like Buck, like, when all the facts are telling the world it is only when the conquerors and the conquered, from the depths of the indomitable nature of the fighting has been awakened, because it knows that all this is that the value of In today's competitive society, winning in a flash, leading to humans can not have the slightest hesitation, breathing with the face of crisis can only be brave to accept, and ultimately conquer the wild but it is not only cruel, it also brings the age-old friendship, can be said that the crystallization of ancient When the last owner, John Buck died, he look up to heaven, sent a long This growl is a sad, is loyal, is Deep sense of love of John Buck Wild is another means of The nature of recovery, the author depicted the coordination of a gradual nature makes the whole story at one go, people let them go, was also in that slow and orderly process, made this call for strong and far-reaching implications, people have to create some kind of association, would like to to explore their own nature, and want to face So I want to say life is paradoxical that the world is complex, but this complex world is that there are naturally created by the easiest The world is that it is full of vitality, while the world into hell, no different is that it - It has cunning, but also loyal; it brings brutal, but also brought the So be it, this is real life, colorful, bright and 在杰克·伦敦写的这本书——《野性的呼唤》中,我走进一只狗的世界。这只狗叫巴克,是一只圣伯纳犬和苏格兰牧羊犬的混血儿。不同的是,巴克并非是神话中充满人类幻想的狗,也不是穿插在人类社会担任朋友角色的狗,而是以在北国雪地的生活、事迹震撼着读者心灵的狗。巴克从小生活在南方一个法官的家里,在那儿巴克享受着优裕的生活,普遍的尊重和取足轻重的地位,可一切却因人类在北方找到一种黄色的金属而改变。带有几分贵族气息的巴克遭受了第一次不礼貌的待遇,它被人拐走卖到一个穿红绒线衫家伙那儿。接着是一顿大棒的反复猛打,一次再次地打得它昏死过去。从此巴克明白一个道理:在那拿着大棒的人面前他是没有希望的。我想大棒就是一把钥匙,一把让巴克明白原始本性的钥匙,让它学习到弱肉强食的原始统治法则,同时也让潜藏在巴克体内的野性渐渐苏醒。如果说大棒是一把钥匙,那么巴克的同伴则是教授这门课程的正文。巴克再次被人交易。它加入了一只拉雪橇的队伍,并从同伴中摸索到了许许多多的生存之道。狗派克教会它如何偷食以慰饥肠。其实巴克是不喜欢偷,为了能吃饱他是非偷不可。从狗比利那儿,巴克很快学会了如何在雪地里破冰汲水解渴等技巧。这里我要提到一只狗斯匹茨, 因为从它身上,巴克“学”到了很多,让在朦胧中的巴克记起了原始的杀戮。斯匹茨是雪橇队里的排头狗,也就是领袖。它把巴克当成是潜在的对手,总是挑衅找茬,表面和善,实际凶残。起先,对于斯匹茨巴克总是处处忍让,尽量避免发生正面冲突。一方面他从中学习,另一方面体内的本能随着一次次的挑衅复活了。最终祖先们的咬啮、撕扯和豺狼式的突击在它身上活跃起来,把斯匹茨斗倒了。 一旦野性苏醒,那来自森林深处的呼喊便时时诱惑着巴克,那是一种凄凉怪诞、叫人毛骨悚然的调子,可巴克却很高兴跟着一起嚎。原始动物的强悍习性在它身上越发强烈,在一次捕猎中,巴克尝到了那种嗜血的欲望和因杀戮而获得的快乐……最终成为了狼王。 人类社会存在着竞争和人类具有的向上的精神就是一种古老的野性的体现吧。野性,是它带来了征服万物的欲望与野蛮。就像巴克一样,当所有的事实都在告诉它世界上只有征服者和被征服者时,来自本性深处的不屈的斗志被唤醒,因为它知道这一切就是生命的价值。在当今竞争激烈的社会,胜负就在一刹那间,导致人类不能有半点喘息与犹豫,面对危机只有勇敢接受,并最终征服……但野性并不仅仅是残酷,它也带来了古老的友情,可以说是文明与古老的结晶。当巴克最后一个主人约翰死的时候,他仰望苍天,发出长长的嗥叫。这嗥叫是伤感的,是忠诚的,是震撼人心的。巴克对约翰浓浓的爱意正是野性的另一种表达方式。所以我想说生命是茅盾的,世界是复杂的,但这个复杂的世界正是有自然最简单的方法造就的。让世界充满生机的是它,同时把世界推入地狱的亦然是它——野性。它有狡猾,也有忠诚;它带来野蛮,也带了了友情。就这样吧,这便是真实的生命,多彩,灿烂,生生不息。The Spring Festival Spring Festival is the most important festival in China It’s to celebrate the lunar calendar 's new year In the evening before the Spring Festival ,families get together and have a big meal In many places people like to set off firecrackers Dumplings are the most traditional food Children like the festival very much ,because they can have delicious food and wear new clothes They can also get some money from their This money is given to children for good luck People put New Year scrolls on the wall for good fortune The Spring Festival lasts about 15 days long People visit relatives and friends with the words “Have all your wishes ” People enjoy the Spring Festival ,during this time they can have a good rest 春节春节是中国最重要的节日。它是为了庆祝农历的新年的。在除夕,各家都会聚在一起吃团年饭,许多地方的人们喜欢燃放鞭炮。饺子是最传统的食品。孩子们非常喜欢这个节日,因为他们可以吃美味的食物并穿新衣服。他们也可以从他们的父母那儿得到一些钱。这笔钱是为孩子祈求好运的。人们将春联贴上墙壁以求好运。春节持续约15天。人民探亲访友互道“恭喜”.人们很喜欢春节,在此期间,他们可以好好休息。 An increasing number of people are becoming aware of the significance of health maintainence Just as the basic need of human beings for survival , like food to prevent starvation , and clothing to keep away from cold , being healthy is one essential element , which would be easily ignored Here , tips for keeping good healthy are to be : work regularily and rest adequately , keep in good hours and have a healthy diet If you do not intent to get yourself sick , exercising every moring would surely be the best way to prevent disease Often can be seen that there are senior folks jogging and playing Taiji on the square or garden And many young peers would much like to take sports gathering , such as table tennis and badminton , instead of spending the whole night getting drunk in bars And as is known to all , tobacco an alcohol are the two greatest evils that creat negative affections on our health Thus a man should definitely be sure of what to eat and what not , what to drink and what not Besides , joining a family outdoor pinic in a shining weekend would be a lovely way to keep psychologically/mentally healthy Anyway , health is the most precious gift that man can ever have 越来越多的人们已经意识到健康的重要性。正如食物充饥、衣物御寒一样,拥有健康也是人类生存的必要条件之一,而它却往往被忽视。以下有保持身体健康的小秘笈:规律的工作、充足的休息、早睡早起、健康饮食。如果你不想把自己弄生病,那么每天的晨练一定是预防疾病最好的方式。经常可以看见,很多老年人在广场或公园健身或打太极拳,而很多年轻人也喜欢聚在一起玩玩乒乓球或羽毛球,而不再是扎堆在酒吧里宿夜买醉。地球人都知道,烟草和酒精是影响我们健康的两大恶邪,所以应该明白,什么该吃什么不该吃,什么该喝什么不该喝。除此之外,在阳光灿烂的周末跟家里人到郊外野餐也能使得心理/精神保持健康。总之,我们应该知道,健康是上天赐给人类最宝贵的礼物。
宇宙奥秘一一神秘(太阳系),(黑洞)。。。。。等
关于天文的论文题目有哪些高中英语
Black Holes(黑洞)Black holes are some of the strangest things in A black hole sucks in anything that gets near Nothing can escape from a black hole—not even BLACK HOLES ARE STRONGNothing escapes from a black hole because its gravity is so Gravity is a force that pulls one thing to Gravity is the force that holds you down on E When you jump up, Earth’s gravity pulls you right back Earth’s gravity also makes the Moon orbit (go around) EThe more matter (stuff) that is packed in a star, planet, moon, or other object, the stronger is its Gravity makes an object with more matter pull an object with less matter toward The Sun has a lot more matter than E The Sun’s gravity pulls on E It makes Earth orbit the SMatter is packed very tightly in some things and loosely in The matter that makes up an iron ball is packed much tighter than the matter that makes up a bag of A scientist would say that an iron ball is much denser than a bag of A black hole is denser than anything you could A black hole could have a million times more stuff than our S All of this stuff would be packed into an area smaller than a The force of gravity from so much stuff packed into such a small area is WHERE DO BLACK HOLES COME FROM?Astronomers and physicists think black holes come from dying A dying star burns out and stops All the stuff that makes up the star starts falling in on The star gets denser and If the star is big enough and has enough matter, it could get dense enough to become a black STUDYING BLACK HOLESNo one has really seen a black You cannot see black holes because they do not give off any kind of Physicists used math to predict that black holes Astronomers look for signs of black Astronomers study powerful rays coming from stars in deep The stars seem to be orbiting black Astronomers think that black holes are sucking gas from the stars, and this makes the stars give off X Galaxies are enormous groups of Astronomers think that most galaxies have huge black holes at their The Hubble Space Telescope took pictures of a disk of hot gases at the center of our own Milky Way G Astronomers think this disk is going around an enormous black hole right in the center of our 黑洞(黑洞)黑洞是在太空的一些奇怪的事。一个黑洞吸入任何靠近它。没有什么能逃脱黑hole-not甚至光。黑洞是强大的没有逃离黑洞因为它的引力是如此的强烈。重力是一股力量,把一件事到另一个地方。重力是地球上把你的力量。当你跳起来时,地球引力把你拉回来。地球的引力也让月球地球轨道(四处)。越多事情(东西),装在一个明星,行星,月亮,或其他对象,它的引力就越强。物体重力使一个对象有更多物质拉向它用更少的问题。太阳比地球更重要。地球上太阳的引力拉。它使地球轨道太阳。问题是包装非常紧密一些事情和松散。这件事让一个铁球比这件事更紧了,一袋羽毛。科学家会说,一个铁球比一袋密集的羽毛。一个黑洞的密度比你能想象的任何东西。一个黑洞可能更多的东西比太阳的一百万倍。所有的这些东西会比城市更小的区域里。这么多东西的重力挤进这么小的区域是可怕的。黑洞来自哪里?天文学家和物理学家认为黑洞来自垂死恒星。垂死的恒星燃烧停止照耀。所有的东西,明星开始下降。星星变得越来越密集的。如果恒星足够大,有足够的物质,它能密度足以成为一个黑洞。研究黑洞没有人真正看到一个黑洞。你看不见黑洞因为他们不发出任何类型的光。物理学家利用数学预测,黑洞的存在。天文学家寻找黑洞的迹象。天文学家研究强大的射线来自恒星外层空间。星星似乎环绕黑洞。天文学家认为,黑洞吸气体从恒星,这使得星星发出X射线。星系是巨大的恒星组。天文学家认为,大多数星系有巨大的黑洞中心。哈勃太空望远镜拍照片的一个磁盘的热气体在我们的银河系的中心。天文学家们认为这个磁盘将在一个巨大的黑洞就在银河系的中心。
The Greek Heavenly Thoughts The Greek was the first recognize the distinction between the natural and the In other words , they found the nature, since then, the cosmology(宇宙学) could never be maintain a system of Gradually, the Greek believed themselves to live in a cosmos, and considered the cosmos to be an entirely natural Besides they saw an order in the The order, to them, not only means an arrange, but also a good order, and also a beautiful, elegant With an optimism(乐观主义), they believed the order, and the cosmos were comprehensible(可知的), and furthermore, could be described in words and When the Greek formed these crucial ideas, some earliest philosophers and scientists were important and The Milesians(米利都学派得的哲学家), including Thales(泰勒斯), Anaximander(阿纳克西曼德), described the cosmos in entirely natural terms for the first Heraclitus(赫拉克立特) insisted that the cosmos worked according to a logos(理性), which mean “word”, “account”, “measure”, and “proportion”, and if we grasp this logos, the cosmos could be understood and described After the Greek accepted the idea that the cosmos was a natural place and comprehensible, some pre-Socratics(前苏格拉底时代德哲学家) overcame some significant conceptual(观念上的) hurdles to achieve a more sophisticated There was the move from a hemispherical(半球形) universe to a spherical(球形) one, and a earth supported by water to supported by air, and then to one which need no In the earlier Greek cosmologies, objects were thought to drop in parallel straight lines from the top of the cosmos to the bottom, this led to the problem why the earth doesn’t fall to the bottom of the cosmos, so in this sort of the cosmos, something is required to support the Then Aristotle placed the earth at the center of the cosmos, there was no the problem of the earth He believed that objects moved to the center of the cosmos, that is the earth The idea that the earth was central and stable dominated Greek astronomy and In Greek minds, it can explain many Firstly, the experience told Greek, if one was in rapid motion, he certainly knew about it, so they thought, if the earth has a daily rotation from west to east, there should be constant wind from east to west; if the earth is in motion around the sun, all objects will sweep off the face of the Secondly, because they had no knowledge of gravity, they believe if the earth in rapid motion, it will disintegrate(解体) Thirdly, if the earth takes up different positions relative to the stars(恒星), there should be a stellar parallax(恒星视差量), one can detect slight changes in the apparent positions of the stars from the When the Greek physics, astronomy, philosophy and common sense all seemed to indicate an immobile earth, there was an important consequence, all of the motions of the heavens were real motions to the earth, not apparent ones due to the motion of the At the outset, Greek observational astronomy was rather divorced(背离) from philosophical speculation about the nature of the Some observed the heavens and took careful notes of what they saw, some produced cosmological models based on general philosophical But no one gave a cosmological model that were anywhere near explaining, in a precise manner, the phenomena that had been The Pythagoreans(毕达哥拉斯学派的哲学家) made the first They believed in the center of the cosmos was a fire, not the sun, the fire was shield from the earth by a body known as the counter The model was vague and speculative, and the earth moves around the fire, and between the fire and earth, there was the counter Plato(柏拉图) produced a slightly better model, had central earth, with the sun, the moon, the five planets and the stars orbiting around Then it was a basic assumption of Greek astronomy and cosmology, if some motions seems not circular or regular, almost all Greek philosophers and scientists would consider these as some combination of several circular and regular Neither of two models could account for two important phenomena relating to the point at which the sun The sun does not always set due west(正西方) Where the sun sets during a year changes from a maximum of 5º north of west to a maximum of 5°north of Solstices(至日,包括冬至、夏至) occur at the maximum points, while equinoxes(分日,包括春分、秋分) occur at the due Later Plato gave the first model that could give a reasonable account for these The model was one of the most important Greek cosmological Plato made the first serious attempt to unite astronomical phenomena and cosmological He insisted that the sun, the moon, have a combination of two regular circular motions, that’s to say, the sun and the moon have a second motion in addition the daily one, offset(偏移) at an angle to As to the five planets, which are wandering in the heaven apparently, Plato gave a similar but more complex The model could give a reasonable explanation approximately, but couldn’t explain the planets exceptive They will progress against the background of the fixed stars over a year or two, or even longer, then they will halt suddenly, and go in the other direction for a while, stop again, after that, progress in the normal Facing a series strange exceptions and motions of the planets, Eudoxus(人名,难以翻译,重要的哲学家、科学家) thought regressively(回归,追本溯源) He was a pupil of Pythagorean, and had a close relationship with P About planets, Plato’s model had two regular circular movements for each planet, Eudoxus gave four circular movements for each In this model, the first sphere (环), generate a daily motion; the second generate the motion along the ecliptic(黄道), the other two produce a pattern like the figure 8 laid on its sides(行星出现在黄道正负8度范围内) Besides, Eudoxus had a record of planets’ motion, and made a good use of mathematics, so compared with Plato’s model, his is more Eudoxus’ model was excellent model for a long time, but there were some inherent Because the distance between the earth and each one of five planets that we can see with naked eyes, always changes, it is not difficult to find that all planets’ size are varying Eudoxus can’t cope with the phenomenon, in his model, the distances between the earth and the planets are constant, that means the size of planets can’t Account for these problems, Ptolemy(托勒密) produced a whole new system which was to last for nearly 1500 The system was based on combination of regular circular motions He gave up concentric(同心圆) sphere model in favor of a system based on a device, the epicycle(本轮,天文模型的一种) The epicycle is a combination of two regular circular motions, but not around the same The center of smaller circle moves around the larger The two circles can produced many complex patterns, because these patterns, Ptolemy was able to explain most problems that beset the concentric sphere model, including the variation of apparent size, the brightness, the velocity(速度) of the Besides the epicycle, Ptolemy made another subtle change, the earth is offset from the center of the sun’s So the model can account for that seasons have slightly different Now before the telescope was invented and new phenomena that can’t be found with naked eyes were detected, the model is the best in the ancient After talking about some important Greek cosmological models, we have to mention an exceptive astronomer, Aristarchus(阿里斯塔克斯) He is the first one who have a revolutionary thinking that the earth is orbiting around the But sadly, we don’t know how and why he can be aware this without any idea about gravity and the phenomena which only can be detected with telescope, only we know he is a follower of A
(流星)(又称 "shooting star" 或 "falling star") 流星体或小冰粒进入大气层后因空气磨擦生热产生的在空中的光亮条。较大的流星称作火球和火流星。Mars(火星)和太阳一样有鲜红的颜色,火星为距太阳第四远,也是太阳系中第七大行星Comet(彗星)(月球)Polaris(北极星)sky(天)------------------asteroid(小行星),在太阳系中,除了九大行星以外,在红色的火星和巨大的木星轨道之间,还有成千上万颗肉眼看不见的小天体,沿着椭圆轨道不停地围绕太阳公转,这些小天体就是太阳系中的小行星。arth(地球),月球是围绕地球转动的一颗卫星。它围绕地球公转一周和自转一周所用的时间相同,因此月球永远只有一面对着地球。Neptune(海王星)Uranus(天王星),海王星和天王星显蓝色是其外层大气层中的甲烷吸收了红光的结果。Neptune(海王星)Moon(月球),Mercury(水星),水星外观同月球十分相像,表面布满了大大小小的环形山即沙丘。在亿万年前也许发生过火山活动。水星表面上还到处遍布大大小小的陨星坑。Mars(火星),火星的轨道是显著的椭圆形。(希腊语: 阿瑞斯)被称为战神。这或许是由于它鲜红的颜色而得来的;火星有时被称为“红色行生”。Venus(金星),金星的大气压力为90个标准大气压(相当于地球海洋深1千米处的压力),大气大多由二氧化碳组成,也有几层由硫酸组成的厚数千米的云层。
关于中国航天的论文题目有哪些英语
In recent years, Chinas space industry has made amazing In the history of Chinas space has three very important The first is the 1970 Chinas successful launch of dongfanghong 1, it is Chinas first man-made earth This marks China is fully capable of launching its own satellite The second milestone is October 15, 2003, shenzhou v manned spacecraft launch, and successfully carry Chinese astronaut Yang liwei returned to earth, this success marks Chinas ability to launch manned spacecraft, is the third in the world after the United States of the Soviet union has the ability to launch of manned spacecraft countries, after the launch of the shenzhou vi, the shenzhou vii and launch successful, The third milestone -- a few years ago began to chang e, October 24, 2007 launch, chang e one, it shows that China has initially have the ability to explore deep Finally I wish the cause of Chinas space can have a more brilliant achievements!(不好意思 手打的话可能段落不太分明 ) 如果需要中文翻译的话请告诉我!希望对你有所帮助!
学习航天精神,承载民族复兴的责任 一、 引言 我国首次发射的载人航天飞船“神州”五号的航天旅程圆满成功,实现了中华儿女多年的飞天梦想,长大了中国人的志气,是我国航天发展史上的里程碑。 二、 正文 伟大的事业孕育了伟大的精神。新一代航天人在攀登科技高峰的伟大征程中,以特有的崇高境界,顽强的意志和杰出的智慧,铸就了载人航天精神。这就是特别能吃苦、特别能战斗、特别能攻关、特别能奉献的精神。这些精神永远值得我们去学习。 生活上刻苦精神永远美好。人生之路不可能是永远平坦的。每个人,总会遇到这样或那样的困难和挫折。我们必须要在挫折和困难中奋起。这就需要有刻苦的精神,特别能战斗和特别能公馆的精神了。“吃得苦中苦,方为人上人。”学习上刻苦精神永远美好! 团结就是力量,是治国之本,更是治校之本。试想,一个集体,如果内部不团结,还出现分歧的话,那这个集体会强大吗?不止这样,一些有图搞破坏的人,在这个时候大力进攻,那损失更是不堪设想。 科学与人文并举。从小,这一句老话就不断地在我们的耳边回响:爱科学,学科学,用科学。但是,真正落实到的,又有多少人呢?友人认为,只要学会做人和文化知识就可以了,不用在学什么科学了。先进的科学技术,对一个强大的国家来说,是必不可少的。身为祖国的“花朵”的我们,不但要做到科学与人文并举,还要做到规范与个性共存! 艰苦的条件锤炼了中国航天人特别能吃苦的精神。中国航天事业是在极其艰苦的条件下起步的。茫茫的戈壁,浩瀚的海洋,广大航天工作者为了早日实现飞天之梦,不辞劳苦,日晒雨淋,克服了无数的困难,付出巨大的牺牲。严酷的挑战铸就了中国航天人特别能战斗的精神,崇高的使命焕发了中国航天人特别能攻关的精神。我们青少年,更应该在学习上多下苦工,好好学习。在生活上、学习上,遇到困难和挫折,不要逃避,不要退缩,要知难而进,一往无前,敢于胜利。有的同学,在生活中遇到了一点点的挫折,就对人生失去了信心和希望,觉得世界上什么都不是好的。于是,就自寻短见,恨离人世。要知道,这个世界是非常美好的,我们要珍惜生命,好好地享受这美丽的人生。就算它是不好的,那也是无可改变的事实。就像航天人员要在严峻的环境中训练一样,那严峻的环境已是无法改变的事实,那只有改变自己,去攻破这个难关。所以,我们不能因为一点点的挫折而放弃自己的使命,而是要在环境中、在艰苦中、在困难中成长,成就自己的人生和使命。学习上也是如此。学习靠的不是小聪明,而是刻苦。读书要用功,持之以恒地刻苦学习、钻研,这才是学习上刻苦精神永远美好的表现。 团结奋斗培育了中国航天人特别能奉贤的精神。我国载人航天工程是中国航天史上规模宏大的系统工程。广大航天工作者不论前方后方,不计名利得失,履行职责,坚守岗位,形成了强大合力。我们都生活在同一个大集体中,都为了一个共同目标——保护集体,就应该淡泊名利,不计较个人得失,甘于奉贤,团结一心,共创辉煌。“团结就是力量”,这是一股强大的力量,是一股催人前进的力量。有了这股力量,可以排除万难,勇往向前,达到目标。大至世界全人类、国家,小至班集体、家庭,都要团结。有的同学不顾集体利益,一心只为自己。例如他在拌种来回走动,看见一张桌子跌在地上,他不但不把桌子弄好,而且还残忍地踢上一两脚,是桌子雪上加伤。又例如是拔河,内部不团结,那肯定是全军覆没。 科学是一个国家发展进步的重要象征。身为21世纪的接班人的我们,必须要学好科学,热爱科学,使用科学。科学与人文都需要我们同时高高地举起。一个规范的学生,更是祖国的需求,是未来成就大事的人。科学与人文并举,规范与个性共存更始一句警惕学生的话句
写作思路:根据题目要求,写出航天的相关内容,最后总结自己的感受。Such a moment will be recorded in the history of human spaceflight, 16:41:00 on September 27, 人类航天史将记下这样一个瞬间,2008年9月27日16时41分00秒。Astronaut Zhai Zhigang went into space from the N7 manned spacecraft wearing the Chinese developed "Feitian" extravehicular 航天员翟志刚身穿中国研制的飞天”舱外服,从七号载人飞船进入太空。This is a major leap forward in the development of China's space 这是中国空间技术发展的一个重大跨越。Zhai Zhigang's small step in space is a historic step for the Chinese 翟志刚留在太空上的一小步,是中华民族历史性的一步。China Aerospace has a team of high-quality talents who can stand at the forefront of world science and technology and have the courage to explore and 中国航天拥有一支能够站在世界科技前沿,勇于开拓创新的高素质人才队伍。In the take-off rocket, add the source of ambition and power of a nation full of 在腾飞的火箭中,加注了一个焕发青春的民族的雄心壮志和动力之源。
关于初中英语的论文题目有哪些
关于高效课堂的或者学生自主学习的都可以。或是专题,关于预习,导入新课的模式,作业的设置等,范围越小越好,越具体越好。
回答 提问 这些都被用过了 不能在写了 还有新的吗
初中英语论文题目推荐可以写一写my favorite star and my favorite sports
学术堂整理了9个英语教学毕业论文题目,并提供了写作思路的指导: 1、初中英语课堂教学的开放性探究 写作提示-写作思路:文章通过与自己多年的教学经验相结合,来谈谈中学英语课堂实践,研究中学英语课堂的开放性活动,为学生构建一个自主、自由、活跃的课堂生活。 2、浅析初中英语教学中学生主动性的培养 写作提示-写作思路:通过中学生学习的主体作用的发挥,可以让学生在学习的道路上取得事半功倍的学习效果。如何让它充分发挥?首先要建立协调、和谐、互补的师生关系,激发学生的主体意识,其次要尝试探尝试探究性教学,发展学生主体能力。 3、浅析初中英语学困生的成因及其转化策略 写作提示-写作思路:初中阶段是英语学习的重要时期,由于多方面原因,学生中途掉队的现象十分普遍。本文根据学困生的成因,针对性地提出了心理、学法、习惯等方面有效促进了学困生的转化。 4、浅谈打造初中英语有效课堂教学的策略 写作提示-写作思路:有效课堂就是课堂达到教师教得有效,学生学得有效,学生对知识的掌握和灵活运用达到有效,它真正实现了教学效益的最大化。教师教得不再那么累了,学生学得不再那么苦了,而学习效率却真正提高了。实施有效课堂让笔者更新了教学理念,转变了教育思想,提高了教学艺术水平。重新审视以前的教学工作,反思过去的教学行为,笔者深切感受到了有效课堂的优质效果。那么如何打造有效的课堂教学呢?笔者认为应从下面加个方面做起。 5、有声思维法在初中英语阅读教学中的优势及运用 写作提示-写作思路:一、前言根据克拉申(1985)所创立的二语习得输入假说理论可知,语言输入在二语或外语学习者的语言学习过程中占有极其重要的地位。对初中生而言,他们正处于英语学习的初级阶段,需要大量的英语语料的输入。输入方式有两种听力与阅读。刘润清(2002)为代表的北派观点主张中国英语教学应以“听说为本、读写并重”,而南派英语教学的代表董亚芬(2003)则主张“中国英语教学应始终以读写为本”。 6、提高我县初中英语教学质量的建议 写作提示-写作思路:黔西县是毕节试验区的东大门和贵阳市的后花园,享有“中国杜鹃花都” 的美誉,近年来,在县委、政府“科教兴县”战略的引领下,全县教育事业蒸蒸日上,特别是突破高中教育、义务教育均衡发展和中职教育方面取得长足的发展。但是,我县的教育发展中也凸显了许多亟待解决的问题。譬如,乡镇学校教师缺编问题严重,教育教学质量总体水平不高等。 7、情境教学法在初中英语语法教学中的运用 写作提示-写作思路:在英语教学过程中,英语语法的教学是一个很重要的部分,我们不能过分的强调语法的作用,又绝对不能忽视必要的语法学习。然而,长期以来,在传统的教学法的影响下,很多老师都是为了语法而教语法,学生往往学了语法而不知道怎么用。语法教学要改变过去满堂灌的现象,关键在于英语教师应具备语法教学交际化的意识和技巧,使语法在具体的语境中让学生得以体会,在实战中演练。 8、浅析农村初中英语课堂中的合作教学 写作提示-写作思路:在新课改背景下,教师应转变传统的“一言堂”的讲课方法,并要把主导者的身份转变成学生学习的引导者,逐渐使学生实现其学习的主体地位。为了适应这一转变,在农村初中英语课堂中,教师应适时搞好合作教学,使学生实现合作学习,从而最大限度地提高英语教学效率。 9、初中英语课外作业创新性设计探究 写作提示-写作思路:恰当的课后作业可以促进学生对所学知识的巩固,久而久之,会促使学生养成良好的学习习惯,强化英语学习观念。本文结合笔者的教学实践,从研究目前初中英语作业布置中存在的问题入手,探讨了改进初中英语作业布置的创新性策略。