1、Unit 4 Astronomy:the science of the starsA VISIT TO THE MOON Do you want to visit the moon?Warming up-Brainstorming(2m)The photo from the moonThe photo from the moonChinas first astronaut-Yang LiweiWrite down the three ways in which gravity changed for Li Yanping.The way gravity changedLeft the eart
2、hIn spaceOn the moon 3.It became very light.1.The gravity became very strong.2.The gravity disappeared.His weights changed three times too.Now write them down.The weight changedLeft the earthIn spaceOn the moonHe became very heavy.He had no weight and could float around like a feather.He was about o
3、ne-sixth of his weight on the earth.Black holes Stephen Hawking thinks that black holes can both eat and spit objects out.Read the passage on page 66 and answer the two questions.1.Can a black hole be seen?How do you know its a black hole?2.What happened to the spaceship from the beginning to the en
4、d?1.Can a black hole be seen?How do you know its a black hole?No,it cant be seen.You can seethings disappear into what appears to be empty space.2.What happened to the spaceship from the beginning to the end?At first the lights on the spaceship went out and the computer stopped working.Then the spac
5、eship jumped and began to move around the edge of the outside of the hole.As the spaceship moved around the hole,it began to go faster and faster.But then the spaceship jumped again,and it moved sideways from the black hole.It began to increase its speed until it seemed to be going as fast as light.
6、As last the spaceship slowed down and the computer started working again.YesOld ideas about“black holes”Was this what we found?New ideas about“black holes”Black holes cannot be seen.Gravity pulls objects towards them.Objects go round outside the edge of the“black hole”.YesYesOld ideas about“black ho
7、les”Was this what we found?New ideas about“black holes”Objects as large as suns can disappear into the“black hole”.All objects must go into the“black hole”when they are caught by its gravity.Time slows down when you are close to a“black hole”.YesNoYescheer up:欢呼，喝彩，感到高兴，使高兴。当看到球队的到来，人群欢呼起来。_ when th
8、ey saw the team arrive.他带她去听音乐会来使她高兴。He took her _ to _.The crowd cheered upto the concertcheer her upwatch do/doing:观看，注视我们看着太阳正在树后面落下。We _ behind the trees.每一天当他们看到植物生长，他们的心里都充满了希望。Every day as they _,their hearts filled with hope.watched the sun settingwatched the plant grownow that:既然，由于既然每个人都到了
9、，我们就可以开始会议。_,we can begin the meeting.由于你是一个大男孩,你就必须行为表现得更好._,you must behave better.Now that everybody is hereNow that you are a big boyWe watched amazed as fire broke out on the outside of the spaceship as the earths gravity increased.amazed 是过去分词，此处做状语用他进来的时候没有人注意到.He came in _.break out (战争,争吵,疾病等)爆发在深夜,突然有人吵架._ suddenly at midnight.A quarrel broke outunnoticed
