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  • Geocentric Theory托福听力原文翻译及问题答案

    时间:2023-07-05 12:54:47 来源:www.ivyeducation.cn

    Geocentric Theory托福听力原文翻译及问题答案

    一、Geocentric Theory托福听力原文:

    NARRATOR:Listen to part of a lecture in a history of science class.

    FEMALE PROFESSOR:Ok,we've been talking about how throughout history,it was often difficult for people to give up ideas which had long been taken for granted as scientific"truths,"even if those ideas were false.In astronomy,for example,the distinction between the solar system and the universe wasn't clear until modern times.

    The ancient Greeks believed that what we call the solar system was in fact the entire universe...and that the universe was geocentric."Geocentric"means Earth centered,so the geocentric view holds that the Sun,the planets,and the stars all revolve around the Earth,which is stationary. Of course,we now know that the planets,including Earth,revolve around the Sun,and that the solar system is only a tiny part of the universe.

    So,why did the ancient Greeks believe that the Earth was the center of the universe?Well,it made sense to them—observations of the sky made it appear as if the Sun,the Moon,and the stars all revolved around the Earth every day,while the Earth itself stayed in one place.

    And this view was also supported by their philosophical and religious beliefs about the origin and structure of the universe.It was presented in the works of well-known Greek philosophers as early as the fourth century B.C.E.And the geocentric theory continued to prevail in Western thought for almost 2,000 years,until the seventeenth century.Now what's especially interesting is that when astronomical observations were made that seemed to be inconsistent with the geocentric view,the ancient Greeks did not really consider alternate theories.It was so intuitive,so sensible that the Earth was the center of the universe that astronomers found ways to explain those seemingly inconsistent phenomena within the geocentric view.

    For example,Greek astronomers made excellent,very accurate observations of the movements of the planets.But the observations revealed a bit of a problem.The geocentric theory said that the planets would move around Earth in one direction.However,astronomers noticed that at times,several planets seemed to stop moving in one direction and start moving backward in their orbits around Earth.And they came up with the theory that these planets themselves moved in smaller circles,called epicycles,as they traveled around the Earth.

    Here's a picture of what they imagined.You see how this epicycle theory could account for the seeming backward motion of a planet.Of course,today we know that this appearance of backward motion is caused by the fact that Earth as well as other planets all move in their own orbits around the Sun,and the relative movements of the planets with respect to each other can get quite complex.

    However,there were a few astronomers in Greece and other places who didn't agree with the geocentric view,for example,a-a Greek astronomer who lived in the third century B.C.E..He proposed the theory that our planetary system might be heliocentric.His name was Aristarchus.

    "Heliocentric"means Sun centered—that the Earth revolves around the Sun.Aristarchus recognized from his calculations that the Sun was much larger than the Earth and other planets.It was probably this discovery that led him to conclude that the universe is heliocentric.I mean,isn't it more sensible to think that a smaller heavenly body would orbit a larger one,rather than the opposite?

    However,his proposition was rejected,largely based on other scientific beliefs held at the time—which all made sense in a way,even if they were incorrect.Let me mention two objections Greeks made to Aristarchus?theory.First,they believed that everything that moves creates its own wind,so to speak—everyone has this experience when you're running,right?So they thought that if the Earth itself was moving,there would have to be a constant wind blowing,sweeping them off their feet—and of course there wasn't.And second,the idea of an Earth that moved didn't fit in with the ancient Greeks?understanding of gravity.They thought that gravity was basically a natural tendency of all things to move towards the center of the universe—which was the Earth,or the center of the Earth.So that explained why apples and other falling objects were falling straight down.If the Sun was at the center of the universe,things would fall toward the Sun—and away from the Earth.Which of course they didn't.So these were some of the reasons they rejected the heliocentric theory.

    二、Geocentric Theory托福听力中文翻译:



    古希腊人相信我们所说的太阳系实际上是整个宇宙。。。宇宙是地心的。“地心说”是指以地球为中心,因此地心说认为太阳、行星和恒星都围绕地球旋转,而地球是静止的 当然,我们现在知道,包括地球在内的行星都围绕太阳旋转,而太阳系只是宇宙的一小部分。








    三、Geocentric Theory托福听力问题:

    Q1:1.What is the purpose of the lecture?

    A.To explain how the heliocentric theory of the universe developed

    B.To give an example of the persistence of traditional theories

    C.To show that scientific knowledge is rarely influenced by philosophy

    D.To compare methods in observational and theoretical astronomy

    Q2:2.Why did the ancient Greeks hold geocentric view of the universe?(2 answers).

    A.The sun appeared to them to revolve around Earth.

    B.They had not developed methods of gathering accurate data on the movement of planets.

    C.Their religious and philosophical beliefs supported this view.

    D.Some of the planets in the solar system had not been discovered yet.

    Q3:3.Why does the professor point out that Greek astronomers tried to explain new astronomical discoveries within the geocentric concept?

    A.To explain why early astronomers found new discoveries exciting

    B.To explain why some claims made by ancient Greek astronomers conflict with claims made by earlier astronomers

    C.To illustrate that the geocentric concept was open to many interpretations

    D.To illustrate that the geocentric concept itself was not considered questionable

    Q4:4.Why does the professor discuss the epicycle theory?

    A.To explain why early astronomers started measuring the velocity of the planets

    B.To explain why the astronomer Aristarchus rejected the geocentric model

    C.To show how early astronomers explained the apparent backward motion of some planets

    D.To show that early astronomers believed that all planets moved in their own orbits around the sun

    Q5:5.In the professor's view,what might have caused Aristarchus to propose the heliocentric theory?

    A.The discovery that Earth was much smaller than the Sun

    B.The lack of proof supporting the theory of epicycles

    C.The influence of well-known philosophers

    D.The apparent stability of Earth

    Q6:6.What were two arguments ancient Greeks used to reject the heliocentric model?[Click on 2 answers.]

    A.More stars would be visible in a heliocentric universe.

    B.A moving Earth would create a strong wind.

    C.Aristarchus's calculations were inaccurate.

    D.Objects fall toward the center of the universe.

    四、Geocentric Theory托福听力答案:








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