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How to do The floating wire challenge
Challenge criteria: Iron objects sink in water, right? However, this challenge involves using science to make a small piece of iron wire float on water.
Materials needed: Iron wire and a bowl of water.
Challenge tips: Water acts like a stretched membrane, like Saran wrap. The trick is to keep the piece of wire on the water surface for a long time, with some support that can be removed without your intervention. Flatter objects float easily.
Ships are made of iron, yet they don’t sink. Why is it so?