# 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

Submitted by Vinh on Wed, 20/05/2020 - 16:08

Ithink people no longer will life on the mars

Submitted by IBRAHIM HAMID on Mon, 18/05/2020 - 15:37

Fristly thank you for a valuable information, and I think so with the massive progress of the space research and different technologies, but of course doesn't like to people lives on earth.

Submitted by senes19 on Mon, 18/05/2020 - 12:09

I have an idea about that. Probably human who is boring with this planet, will leave from Earth. Because there is unfair sharing, bad behaviors in this world. Maybe another planet will solve humans problems. It will create a new world. I think it has to able to support adequately our life. Holy books may show us a way to explore.
I totally agree, I hope new research and technology one day allows us to travel and live on Mars! We are so fed up with planet earth.

Submitted by Chipinque on Sun, 17/05/2020 - 17:54

Probably if people creates elementary infrastructure to live there, I think life will be pretty rubbish and boring at first, and how expensive to live there would that be?

Submitted by vaniafed on Sun, 17/05/2020 - 13:33

I think so, but according to people's priorities, it won't happen very soon. Because people like making troubles and doing things which won't do any help to humanity itself.

Submitted by AlejoPB on Fri, 15/05/2020 - 17:16

I think that could be possible, the humans every day are looking for new technological advances and ways to create an artificial environment, for this, I believe that possibly shortly to live in mars, however in not good and comfortable conditions.

Submitted by Olumy20 on Thu, 14/05/2020 - 19:15

Possibly but not without challenges, it will take alot of conditioning for human to survive in Mars. But never say never

Submitted by Albert Marambio on Thu, 14/05/2020 - 02:52

I was thinking to get to mars, but it will take a long time that happens,as I do not beleive people get to the moon,so ,in my opinion isn't easy...

Submitted by Ben2008 on Thu, 14/05/2020 - 02:50