Test a material
To test if a material is waterproof, place it over a cup of water and watch if the water passes through. If water goes through, it’s not waterproof. If water stays on top, it's waterproof.
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Mei wonders: Which item will keep water out during a test?
- Plastic (right)
- Wood
- Cardboard
Felix and Lena are curious. If you pour water over a plastic lid, will the water go through?
- It depends
- Yes
- No (right)
Theo wonders: Which material keeps water from going through when tested?
- A plastic lid (right)
- A metal spoon
- A paper towel
Tip: To test if a material is waterproof, place it over a cup of water and watch if the water passes through. If water goes through, it’s not waterproof. If water stays on top, it's waterproof.
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