流星雨演讲稿

Before the speech,I will show you some pictures.Let's see.

Let's go to see The Meteor Shower together.一起来看流星雨

The man from the star.来自星星的你

The TV plays have a common point. Can you find what the thing are related to?

Yes,The Meteor Shower.

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Each person must have some good wishes, and be eager to achieve. when the Meteor shower comes,lots of people will make a wish and place it on the meteor shower.

每个人的心中都有一些美好的愿望，并且非常渴望实现。就来向流星许个星愿吧！让自己的愿望和流星一起闪烁。

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Next,I will focus on the phenomenon , the form reason and the naming of the meteor shower.

ok,I introduce the The meteor shower firstly.

Meteor shower is the phenomenon that lots of meteors fall down from the air.

流星雨一种有成群的流星看起来像是从空中的一点中进发出来，并附落下来的特殊天象。

In the solar system ,there are the sun, the eight planets and their satellites,In addition ,there are lots of dust particles and small solid blocks.The small particles also move around the sun.But,when close to the earth,they will change their orbit due to the effect of earth's gravity. if so, it is possible that the particals go through the atmospnere of the earth. when it happens,the particals have powerful friction with the atmosphere and burn up.This phenomenon is called the meteor.

太阳系内除了太阳、八大行星及其卫星、小行星、彗星外，在行星际空间还存在着大量的尘埃微粒和微小的固体块，它们也绕着太阳运动。在接近地球时由于地球引力的作用会使其轨道发生改变，这样就有可能穿过地球大气层。这些微粒和大气层发生剧烈摩擦并燃烧发光,这种现象就叫流星，一般发生在距地面高度为80－120公里的高空中。

The meteor shower forms mainly due to the breakage of the comet. The comet mainly consists of ice and dust. As the comet is close to the sun,the ice will be melted gradually, which makes the dust particles erup from the comet into the comet orbit, like volcanic eruption 。But the big particles still formed dust head and the small particles formed dust

tail. When the earth go through the dust tail, we will have a chance to see the meteor shower.

形成流星雨的根本原因是由于彗星的破碎而形成的。彗星主要由冰和尘埃组成。当彗星逐渐靠近太阳时冰气化，使微粒喷出母体而进入彗星轨道，像火山喷发一样。但大颗粒仍保留在母彗星的周围形成尘埃彗头；小颗粒形成彗尾。当地球穿过尘埃尾轨道时，我们就有机会看到流星雨。

Crowds of meteors form the meteor shower.It looks like that the meteors are explosed and fall down from a point in the sky.which point is called the meteor shower's radiant ually astronomers call the meteor showers with the constellation that the point belongs to,which can distinguish meteor showers from different directions.

成群的流星就形成了流星雨。流星雨看起来像是流星从夜空中的一点迸发并坠落下来。这一点或这一小块天区叫作流星雨的辐射点。通常以流星雨辐射点所在天区的星座给流星雨命名，以区别来自不同方向的流星雨。

For example,on about November 17th of each year,the meteor shower radiant point is in Leo, it was named the Leonid meteor shower.there are also other meteor showers like Aquarius meteor shower, Orion meteor shower and so on.

例如每年11月17日前后出现的流星雨辐射点在狮子座中，它就被命名为狮子座流星雨。其他流星雨还有宝瓶座流星雨、猎户座流星雨等。

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On the evening of April 22, 2014, Lyra meteor shower came t o the earth. masripeskov ,director of Novosibirsk planetarium , sai d: "the meteors completely can be observed with the eye. In the largest meteor showers that I saw, there was 100-120 meteors p er hour; but the Lyra meteor shower only about 30-40 meteors p er hour."

2014年4月22日晚，天琴座流星雨光临地球。新西伯利亚天文馆负责人谢尔盖·马斯里科夫说：“这

场流星雨完全可以用肉眼观测到。在我们见过的最大的一场流星雨中，每小时会有100-120颗流星飞过；

但是预计天琴座流星雨每小时只有近30-40颗流星飞过。”

According to the prediction of astronomers. In 2014, the northern hemisphere's three biggest meteor showers are the Quadrant meteor shower in January ,the Perseid meteor shower in August and the Geminids meteor shower in December , which the maximum flow can