Unit 4 Astronomy: the science of the stars（Listening, Speaking and Writing）
china’s manned space programme has four goals: 1.to develop basic manned space flight technology; 2. to observe the earth and undertake experiments in space; 3. to help design space vehicles; 4. to accumulate experience for a large space station t: suppose you are part of this future programme, talk about what you’ll do, what you’ll see and what you’ll get.step iii projectask students to collect as much information as they can about the nine planets in our solar system. choose one planet that they would like to explore. then write a research report. the report should include the four requirements on page68.1.one possible project:topic: marsthe planet i have chosen is mars because it’s the closest to the earth and it’ll be one of the first planets for us to explore. it’s named after the roman god of war because from the earth it looks red in the sky.information position: 4th planet in our solar systemdistance from our sun: 228 million kmsdiameter: half the size of the earthmass: one tenth the size of earthgravity: one third of that of earthsurface size: same as dry land of earthlength of day: half an hour longer than earth daytime to circle the sun: two earth yearssatellites: twoair: 95% carbon dioxide 2% argon, 3% nitrogen, very little oxygenfindings from space tripsthe most important trips to mars have been made by the us and ussr. they have both sent many spaceships but no people to visit mars. they have discovered:---there are two seasons on mars: a warm, dusty, southern summer and cold, dusty-free northern winter.---no life can live on mars now, as the air doesn’t have enough oxygen---there are some evidence of early life when there was water on mars three million years ago---changes in the color of mars are produced by dust storms on mars---it has a north and a south pole made of frozen carbon dioxide gaswhat i would like to find out1.whether there is life under the surface of mars2.whether it would be possible for people to live on mars3.whether there is oil or jewels or rocks that would be useful for people on earth2.another project:topic: jupiter
jupiter is the fifth planet from the sun and is the largest one in the solar system. if jupiter were hollow, more than one thousand earths could fit inside. it also contains more matter than all of the other planets combined. it has a mass of 1.9 x 1027 kg and is 142,800 kilometers (88,736 miles) across the equator. jupiter possesses 28 known satellites, four of which - callisto, europa, ganymede and io - were observed by galileo as long ago as 1610. another 12 satellites have been recently discovered and given provisional designators until they are officially confirmed and named. information