2條有關水既問題~(10分!)

2007-05-27 1:14 am
You are the captain of a ship.One day, you are shipwrecked on an island...
You are trapped on the island with some food but no fresh water.You can only find muddy pond water and seawater.

1.Can you drink muddy pond water or seawater?What may happen if you drink them?

2.Can you turn muddy pond water or seater into drinking water?

English"
更新1:

How to do the distillation ? Cna you show me the steps?

回答 (2)

2007-05-27 6:30 am
✔ 最佳答案
㊣我答你啦~~~
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1.Can you drink muddy pond water or seawater?What may happen if you drink them?

No since there are lots of bacterias and impurities which are unhealthy and harmful to human life in both water.

Muddy pond water contains a great deal of mud which will make us sick while seawater contains high concentration of salt which will make our cells flaccid because of osmosis.

2.Can you turn muddy pond water or sea water into drinking water?
By using decantation, filtration and distillation to turn the kinds of water into drinking water.

Decantation
1]Find a container to contain the water.
2]Wait a few minutes until the insoluble impurities all decanted to the bottom.
3]Transvase the water to the other container slowly and leave the impurities.


Filtration
1]Find two containers and use one which can be heated to contain the water.
2]Make a filter funnel and fix it at a stationary position.
3]Transvase the water to the other container through the filter funnel
4]Repeat the process[3] until the water became clear and transparent.


Distillation
1]Find two containers and use one which can be heated to contain the water.
2]Make a tube and fixed it at one position of the mouth of the container.
3]Cover the container.
4]Heat the container until the water vapour cooled.
5]collect to water which transvased to the other container through the tube
2007-05-27 5:31 am
1.
NO.
Muddy water --> dirty , contains a lot of impurities and bacteria
Sea watrer --> dirty , contains a lot of impurities and bacteria , too salty

2.
By distillation


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