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21英语教师网 > 备课资源 > 拓展阅读 > 正文
Blue space suit for red planet
作者:21ST    来源:初中版第131期    日期: 2010-09-14
外研版初二年级:Journey to space

关键词:Planets and days

话题归类:现代技术Modern technology


在火星上我们穿什么?


IF astronauts could go to Mars (火星) one day, what would they wear?

Some US university students have made a Mars spacesuit.

The spacesuit is made of a hard material (材料). It has a see-through helmet (头盔) and a backpack. Astronauts can even walk up a 45-degree slope (斜坡) in the spacesuit. This is good, because there are lots of slopes on Mars.

The temperature on Mars is about -129'C to 0'C. So the spacesuit has thick gloves and boots to keep astronauts warm. The gloves can move freely - an astronaut could even tie a shoe wearing them.

Although it's cold outside, the spacesuit should be as warm as 37'C inside. The helmet is supposed to be 21'C.

The spacesuit weighs about 21 kilograms on the earth. Too heavy, you think? It would weigh only about 7 kilograms on Mars, because the planet has lower gravity (重力).

This spacesuit is bright blue in colour. Mars is called the Red Planet. There are big winds with red dust (尘土) there. A white spacesuit would get dirty. Then it would be very hard to see the astronaut. But for someone dressed in blue, this would not be a problem.



关键词:外研版 初二 Journey to space 现代技术Modern technology



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