1、UNIT 4A visit to the moonDo you want to go to the moon?Who was the first person that stepped onto the moom?The pull of the earths gravity will disappear when you are in space.You will be weightless.The gravity of the moon is very light.You will weigh less than on the earth.The gravity on the moon is
2、 1/6 as strong as it is on earth.This means that someone who weighs 150 lbs(磅磅)on Earth would weigh only 25 lbs on the moon!You might think that this would make walking much easier,but it is actually quite difficult Later in the Apollo(阿波罗阿波罗)(Moon landing)mission,astronauts discovered that it was e
3、asier to hop(跳跳)than it was to walk.Space walkthe first man in spaceYuri Gagarin The first man on the moonNeil Armstrong Russia 1961U.S.A.1969Fast reading:True or False1.The force of of gravity would change four times on their journey.()2.When they were on the moon,they would not feel the gravity be
4、cause there was no gravity on the moon.()3.Since the gravity has changed,their walk didnt need a lot of practice.()FFFDetailed reading:Read Para 2 carefully and underline 3 sentences that show the changes of the gravity.as he left in space on the moonthe way gravity changedleft the earthin spaceon t
5、he moonIt became very light.The gravity became very strong.The gravity disappeared.The three ways in which gravity changed for Li Yanping and how his weight changed.1.The pull of gravity became very strong she left the earths atmosphere.His weight is normal.2.It disappeared when he was in space.He i
6、s weightless.3.It was very light when he was on the moon.He weighs less than on earth.Was their returning painful?What happened to the spaceship?Yes.Fire broke out on the outside of the spaceship.Q&ALast month I visited the moon with my friend.Before we left,I was told the force of _ would change th
7、ree times on our journey.Then we took off.Gradually the weight _.When I was in space,it _.We _ weightlessly in the cabin and I _ _.When I was on the moon,I was surprised to find out even walking needs lots of practice _ _ gravity changed.The returning of the earth was very _.We were amazed to watch
8、fire _ _ on the outside of the ship.gravitylesseneddisappearedfloatedcheered upnow thatfrighteningbreak outSummary倍数表达法倍数表达法1).“A+be+倍数倍数+as+形容词原级形容词原级 +as+B”.2).“A+be+倍数倍数+形容词比较级形容词比较级 +than+B”3).“A+be+倍数倍数+the+名词名词 (size,length,amount)+of+B”If you visit the moon1.what problems will you meet with?2
9、.To solve these problems,what things will you take?Please take down some notes while discussing,after discussion,please report it.Example:If I visited the moon,I might have?problems:The first one is Because To solve this problem,I would take with me.The second one is Discussion:How to cool youYou mi
10、ght have 4 main problems:How to breatheproblemsWhat to eatWhat to wear spacesuitoxygen tanksspace foodthings needed on the moonIf you follow this advice,I think you will have a good time on the moon.waterHomeworkWrite a passage explaining three problems you might meet on the moon and how you will solve it.
