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How to make fresh water?Loading...
by the French school for the Icelandic schoolLoading...
Objectives of the experiment:Loading...
Model a system of desalination of water desalinisation to make fresh water.Loading...
Conduct of the experiment:Loading...
Material:Loading...
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- water and salt to make saltwater- a lamp to heat the water
- a small plastic bag (frozen bag for example)
- a small container
- an elastic band
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Organization of the classroom:Loading...
By small groups or one experiment for the whole class.Loading...
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Additional explanations (prerequisite knowledge, preliminary observation):Loading...
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The experiment designs a system which is still exist. So then we could build it on our planet. Watch the video to know more.Loading...
Conduct of the experiment:Loading...
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1. Mix the water and the salt to make saltwater (taste it to check salty flavour)Loading...
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2. Put the small container in the plastic bag.Loading...
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3. Form a buble shape with an elastic band.Loading...
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4. Put over a lamp for heating water and make it evaporate. Wait 24 h and test the water fallen in the plastic bag. Is the water still salted ?