# A student discussion

Listen to two students comparing Mars and Earth to practise and improve your listening skills.

### Instructions

Do the preparation task first. Then listen to the audio and do the exercises.

### 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 …

### Language level

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Submitted by sorayajesus on Mon, 15/06/2020 - 10:43

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I think that is possible, because the science is developing much quickly. I believe that space station will be built, like the ones in the movies. But, it will be very expensive.

Submitted by Lizochka on Sat, 13/06/2020 - 19:17

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I think it will be impossible for us to live on Mars, because Mars doesnt have all required for living here!

Submitted by Sharif Tayyebi on Wed, 10/06/2020 - 08:36

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Relevant to this case, it says that one day human can live there. But in my view, there are many different problems which can cause problems for living on Mars. For instances, gravity, lower temperature, lack of air and introducing energy are just some of them. As we know, living on Earth needs a lot of energy and it is the main reason of many disputes in the world. Water is another problem, if on Mars it doesn't exist. It says that living on Earth will led to many problems by lack of water and energy in the future, we can anticipate the situation of living on Mars. On the other hand, I believe on science and technology. If we go to past centuries, we can realize the effects of science in our living. Therefore, I mean it is not impossible that one day human can go and live there without any problems. I hope so. Regards, Tayyebi

Submitted by Havan saberi on Wed, 03/06/2020 - 21:13

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Despite the very low temperature on Mars, the little amount of air is the problem. I think if we will solve this issue by plantation for instance, we could live on Marc one day.

Submitted by Tu Le on Tue, 02/06/2020 - 04:56

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I think we can live in Mars in the far future, because there’s no more air and water for people life

Submitted by Julia19 on Mon, 01/06/2020 - 11:40

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People have dreaming about life on Marce for a long time. Many books were written about invasion this planet. But I think that people never will live there as on earth. The conditions are rather distinguish so the supporting life needs a lot of cost. In my opionion, we can only spend research works in this place but not live as a human society.

Submitted by wido on Thu, 28/05/2020 - 22:27

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I think not , because of two reasons,one is air, the second is water. the mars is caller than earth they can't live in this circumstances.

Submitted by Massimo on Thu, 28/05/2020 - 08:04

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No, I don’t think so at all! The mankind needs blu sky, blu oceans, green forests and many other things there aren’t on Mars.

Submitted by mouna99 on Tue, 26/05/2020 - 13:47

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with the evolution of sciences I can say maybe one day people will live on Mars