Water Filter from a Bottle
Professor O will help you learn: Filtering removes bits from dirty water; layers trap different sizes of dirt (but don't make it safe to drink).
⚠️ An adult should cut the bottle, as cut plastic edges can be sharp. Never drink the filtered water - filtering removes bits but not germs. Wash your hands after handling the dirty water.
Steps
- Ask an adult to cut the top third off the bottle.
- Turn the cut-off top upside down and rest it inside the jar so the neck points down like a funnel.
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📖 Featured in: What to save from the recycling for junk modelling
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