Listening: Making Air on the Space Station

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B2 | Listening from video | 12 min

Watch the video (0:06 - 5:51). You can watch more than once, then answer the questions.

What two things does a space station need to do to keep its air breathable?

____ Cool the cabin and add water vapor to the air____ Heat the cabin and store extra nitrogen____ Supply oxygen and remove exhaled carbon dioxide

A NUMBER from the video.

On average, one astronaut needs about ____ kilograms of oxygen every day.

How did most early space missions provide oxygen for their crews?

____ By carrying it in pressurized tanks____ By making it from water on board____ By collecting it from the Moon's surface

The Apollo 11 crew did not have enough oxygen for their eight-day trip.

____ True____ False____ Not Given

Why did engineers stop relying on shipped oxygen for space stations?

____ The tanks were too dangerous to open in orbit____ Sending such a large load again and again would cost too much____ Astronauts did not like the taste of stored oxygen

Astronauts on the space station drink more water than people do on Earth.

____ True____ False____ Not Given

ONE WORD from the video.

The electrolyzer breaks water down into oxygen and ____ gas.

Why is it hard to remove the gas bubbles from the water in orbit?

____ The bubbles float away too quickly____ The water becomes too hot to pump____ The bubbles tend to stick to the electrodes

ONE WORD from the video.

The new magnetic system needs less maintenance because it has no ____ parts.

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