Today we explored capillary action using paper towels, cups, and water with food coloring. We used 2 different brands of paper towels. We noticed that the water molecules moved more quickly through the denser paper towels. We also observed that the food coloring molecules got trapped in the paper towels, so the water was clearer once it made it to the second cup. The paper towel was acting like a filter. We talked about capillary action in plants and watched a quick video that showed how a thorny devil uses capillary action to drink-amazing! Can you think of other instances of capillary action in nature?
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| Viva: the denser paper towels |
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| Off-brand paper towels |
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