Yesterday a group of students from Team 2 investigated capillary action. We already knew about molecules of air and found out about molecules of water. They like to stick together and this is called cohesion. We also discovered that some materials like paper and fabric are made with fibres and have tiny holes between the fibres that the water molecules are attracted to. This is the reason some materials mop up spills better than others. The plastic bag didn't work at all!
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