新课标必修3 UNIT4 a visit to the moon 阅读PPT文档资料.pptVIP

UNIT 4 A visit to the moon;Do you want to go to the moon? Imagine what you will feel when you are in space?;The pull of the earth’s gravity will disappear when you are in space. You will be weightless.; The gravity on the moon is 1/6 as strong as it is on earth. This means that someone who weighs 150 lbs(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) (Moon landing) mission, astronauts discovered that it was easier to hop(跳) than it was to walk .;Space walk;2..It takes the moon one day to move around the earth.;1._____ was the first person landing on the moon? A. Armstrong B. Yang liwei C. Tom Cruise D. Issac Newton ;the first man in space;Do you know who they are?;;;Reading A visit to the moon;Fast reading: True or False;Detailed reading: Read Para 2 carefully and underline 3 sentences that show the changes of the gravity. as he left in space on the moon);;The three ways in which gravity changed for Li Yanping and how his weight changed.;Was their returning painful? What happened to the spaceship?;Last month I visited the moon with my friend. Before we left, I was told the force of ______ would change three 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 fire ____ ____ on the outside of the ship. ; If you visit the moon what problems will you meet with? To solve these problems, what things will you take?;How to cool you;Homework Write a passage explaining three problems you might meet on the moon and how you will solve it.;2. watch …do/doing :观看，注视 ;1). “A + be + 倍数 +