This filter, made mostly from inexpensive household items, will teach kids about the processes of water purification . Putting the filter together is a simple process, easily done on a tabletop in an hour or less.
Cut the soda bottle in half, and remove the top half. ...
Put the top half upside down into the bottom half so the top half makes a funnel, and the bottom becomes a collector.
Add layers of sand, gravel and charcoal into the top half of the bottle and we used cotton also ...
Get some dirty water. ...
Pour dirty water into the top half of the bottle.
After some time we can collect the pure water .
Cut the soda bottle in half, and remove the top half. ...
Put the top half upside down into the bottom half so the top half makes a funnel, and the bottom becomes a collector.
Add layers of sand, gravel and charcoal into the top half of the bottle and we used cotton also ...
Get some dirty water. ...
Pour dirty water into the top half of the bottle.
After some time we can collect the pure water .
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such a interesting science project ...
have a good day
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