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Muddy
water can be purifed
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Large pan
- plastic cup or drinking glass shorter then the pan
- plastic wrap
- several clean marbles
- a rock or marble
- masking tape
- muddy water
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Put about
4 cm of muddy water into a large pan.
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Put a cup in the
center of the pan ; use a few clean marbles at the bottom to hold the cup
down.
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Cover the pan securely
with plastic wrap,but leave a little slack .
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Use your finger to
put a little water around the rim of the pan so that you can make a good
seal between the plastic and the pan.
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You may want to use
masking tape to keep the plastic in place. Put a rock or marble in the
center of the plastic so there is a slight dip over the cup.
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The plastic
should not touch the water. Put it in direct sunlight.
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That
with condensation you can purify the muddywater and the longer eave it
in the sun the more water you get. |
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With
the sn beating down and the condensastion the weightin the middle
of the plastic wrap it makes the water into the cup. |
Hypothesis