1、To read and talk about the universeTo view for understandingTo summarise informationWhat do you know about“universe”?All the stars,All the planetsThe earthVastness,InfinitenessHow big is the universe?This video provides the answer to the frequently-asked question about the universe.Probably,these wo
2、rds from the video are new to you.Guess their meaning.Have a try.relating to or intended for one particular type of person or thing onlypaying no attention to sth/sbto time a number,to increase by a large a mounta straight line from one side of a circle to the other side,passing through the centresp
3、ecificallyregardless ofmultiplydiametersurprisingly impressive or largewithout limitshaving the same value,purpose,job etc as a person or thing of a different kinddifficult or impossible to understandequivalentincomprehensiblebewilderingstupendousinfiniteconfusing or pazzling for there are too many
4、choicesReview the above words if necessary.specifically _ regardless of _multiply _ diameter _equivalent _ infinite _incomprehensible _bewildering _ stupendously _temporal _具体地具体地不管不顾不管不顾乘，乘以乘，乘以直径直径等同的等同的无限的无限的不可理解的不可理解的令人困惑的令人困惑的巨大的，惊人的巨大的，惊人的短暂的，受时间限制的短暂的，受时间限制的What do you know about the universe
5、?Complete the quiz with the right numbers.13.8 billion 27.5 billion 46 billion 93 million1.The universe is about _ years old.13.8 billion2.The observable universe is about _ light years across in diameter.3.Today the distant objects like stars that we can observe are a bit more than _ light years aw
6、ay.4.Light has been travelling at most 13.8 billion years.So logically thinking,the observable universe must be two times 13.77 equals _ light years across.But it is not.93 billion46 billion27.5 billionWatch the first part of the video.Check your predictions from Activity 1.Watch the rest of the vid
7、eo.Complete the table.Questions Observable universeWhole universe1.How big is it?2.Is there an edge?3.Is there a center?4.Is it getting bigger?The observable universe is about 93 billion light years across in diameter.Infinite.Yes.Temporal edge.No.Yes.Earth/you.No.Yes.Yes.Pair work Watch the whole v
8、ideo again.Discuss the questions.1.What is the Earth compared to?Is the comparison useful in understanding the infiniteness of the universe?The size of the Earth within the observable universe is roughly equivalent to the size of a virus within the solar system.That does not help much,because we can
9、not really appreciate the incomprehensible smallness of a virus nor the bewildering bigness of our solar system either.2.What methods does the presenter use to enable viewers to understand this piece of knowledge in physics?The presenter provides comparisons that are relative to our knowledge.What h
10、ave you learnt about the size of the universe?Find more information online and share with the class.TipsStudents can be divided into small groups,and talk freely and research the universe online.Each student shares a few sentences with the class abut what stood out the most for them about the universe.What do you know about the universe?You may find some information online.Learn to summarise it and write a short passage about the universe.
