A student discussion
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Preparation
Transcript
Teacher: So you've got a few minutes to discuss with your partner.
Student 1: So, as far as I know, the main similarity between Mars and Earth is that they can both support human life.
Student 2: Yeah, but do we know that's actually true? I mean, Mars is much colder than Earth, isn't it? It says here it's about minus 55 degrees most of the time, whereas on Earth only places like Antarctica get that cold.
Student 1: True. Well then, I suppose you could say both planets are a similar distance from the Sun?
Student 2: No way! Mars is much further away! It says here it's about 228 million kilometres, while Earth is about 150 million.
Student 1: Yes, but in space that's not that far. Jupiter is, like, almost 780 million kilometres. That's why we use astronomical units when we talk about distances in space. Earth is 1 astronomical unit from the Sun and Mars is 1.3. The difference doesn't sound so big when you look at it that way.
Student 2: I see what you mean. Jupiter is 5.2 astronomical units so I guess you're right. What other similarities are there between the two planets?
Student 1: Let's see … not the colour, obviously!
Student 2: Yeah! Earth is called the blue planet and Mars is called the red planet for pretty obvious reasons!
Student 1: Their sizes are pretty different. Mars is about half the size of Earth.
Student 2: What about this? It looks like the days on both planets are almost the same length. Earth's day is 24 hours but Mars's is about half an hour longer.
Student 1: You're right. OK, any other things they both share?
Student 2: I suppose you could say they have water in common.
Student 1: Could you? How?
Student 2: Well, Earth is 70 per cent water and Mars probably had huge oceans in the past. It's just that most of the water there now is probably frozen.
Student 1: Ah, I see. I don't think we can say the air is the same, though. Most of Earth's air is nitrogen and oxygen, but Mars …?
Student 2: Mars doesn't really have air, not compared with Earth. It's got about one per cent as much air as Earth.
Student 1: Right, and it's mostly carbon dioxide.
Student 2: Gravity is another difference. I didn't know this, but Mars has higher gravity than the Moon. But it's much less than on Earth, of course.
Student 1: Oh, yes. It says Mars has about 38 per cent of Earth's gravity.
Teacher: OK, let's see what you've found …
It's necessary to say that Mars haven't so many resources than Earth, Moreover is hard to have to lead with air made up different elements that not allowed the life keep continue for a long time. In conclusion, I guess that hardly we'll can transport resources enough to have a satisfactory life in Mars.
I think it is maybe hard to live in Mars but not impossible. the expert is continuous about its. I believe human able to live Mars one day.
I think, one day, people can live on Mars. But not us, of course. ))
Hi, i dont believe that people one day will live in mars, mars doesnt have support for humanity life
Living in mars looks like a panadol we took when we feel
Sick instead of seeing a doctor. I think we should focus on clearing our environment by preventing pollution and have a big hand on the pollution companies instead of thinking about new era in some far planets
Hello everybody. To surviving on Mars would require overcoming immense obstacles. I think to live there is quite impossible. Because the too many differences about the gravaty, climate, the air and we need to oxygen, nitrogeny to survive.
Hello to everyone,
Earth and Mars are two different planets, and their purpose are also different.
I am human being base!
So, let's humans first learn how to live in a peace on earth, before trying to live in Mars !
I like studying here with "Learn English British Council".
I think there is a huge possibility that people will be present on the plant Mars in the Future. But the time will see.
Scientific findings are always changing. Nobody can predict the future.
sciencetists believe humans can live on Mars one day because we already have technology for space travel , habitats and using Martian water .but mars is extremely dangerous due to thin air, radiation, and extremely cold. so living there is possible but very difficult, and will only happen with advanced future technology.