Do the preparation task first. Then listen to the audio and do the exercises.
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 …
in my opinion, everything can happen. one day I think w can live on Mars with adapt tools.
I don’t know that, it’s difficult to imagine the future on mars planet, but I think that with the humans evolution and with the most frequently changing on heart, humans will be obligated to found another place for living theyr life, and mars is probabily one of the most ospitality planet that there are on our galaxy
Well... everything is possible. Although all the researches are more focused on finding life or proving that we can live on Mars, I strongly believe aliens will invade us and maybe show us more options in this massive universe. Maybe a warmer planet than Mars.
yes of course, human is progressing in all field of science. he produce new tools. he use new tools and experience of humans before him. beside, I think humans is genetically progressing. he has communication with other people by the internet. Summary, the things are impossible for us, will be done by future generations.
I think we should find another planets where human can live.Because the world was gradually destroyed by people.
Maybe one day, if the technology improves, to the level at which we will be able to use it to live there.
i think , we can live in marth, but no in this moment, we dont have a good tecnology, to go for other planet.
I'm sure that People cannot live in Mars and never live there . Because:
- First, there's no water currently. People cannot live without water.
- Second, The temperature is about minus 55 degrees, it's so cold towards people. Maybe i's not true in the future with technology.
- Third, Mars don't have Air, especially Oxygen. It's indispensable for People
In the Future, it's probably need a lot of money and technology to Help People can live in Mars
I think it would be impossible to live in other planet than earth, I know technology gets bigger and wider day by day but that doesn't mean they can create the sources of life that god have made, I could imagine people visiting Mars but not live on it obviously.
Yes, I think technology has improve, so maybe one day someone will be there, because I think Mars has a similar conditions than Earth, however Mars hasn't enough water to survive, so it could be a problem.