Assuming that you could survive in outer space without a space suit would it be possible to drink using a straw explain y or why not?

Answer 1

No. The action of a drinking through a straw is that you suck the air out of the straw, and the air pressure on the outside of the cup them pushes the liquid up the straw. If there were no air pressure on the surface of the liquid, then there wouldn't be anything to cause the liquid to rise.

However;

1. If there were no air pressure, the liquid would boil and vaporize; there wouldn't be any liquid to drink.

2. In weightlessness, you can't suck water through a straw even IN atmosphere; the liquid forms globules under the influence of its own surface tension. On the Space Station, the astronauts drink from sealed bulbs; sort of like juice pouches. You squeeze the pouch to push the liquid into your mouth.

Answer 2

In empty space, no, because there is no air pressure to push the liquid up the straw. If you were in a spaceship, however, with normal air pressure inside it, then a straw would work just like on Earth. Better, in fact, because there would be no gravity to overcome.

Answer 3

It would depend on the type of container. If the container is a cup with a lid - like a child's sippy cup - then no, because the act of drinking through a straw requires that the liquid possess some weight and so would fall to the bottom of the container. In space, there is no weight; when you suck on the straw, you pull up some of the liquid, but the rest of the liquid won't fall down to the bottom of the cup, and the air in the cup would more easily flow in around your straw.

Actually, if there was ANY opening in the cup to allow air back in, then the liquid would flow OUT and make a mess in your spacecraft.

In space, all liquid containers are entirely sealed, like juice pouches. When you suck liquid through the straw, then no air can get in, and the pouch will collapse due to air pressure outside the pouch, but in the spacecraft.