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Capillary action in plants experiment with paper towel - Science experiments for kids
Capillary action in plants experiment with paper towel - Science experiments for kids You'll need: • Two glasses • Color water • A paper towel or a tissue paper Capillary effect: The movement of a liquid along the surface of a solid caused by the attraction of molecules of the liquid to the molecules of the solid. • Take two glasses • Put them side by side • Fill one of the glass with color water • Now take a paper towel • Pin fold it or fold it into middle • Dip one of the ends of the paper into the color water and put the other end into the glass one beside it • Leave it for few hours • You can observe that the color water gets transferred into the empty glass through paper towel • Its keeps flowing into the glass till they attain equal amount of water in both of them A Closer Look Molecules of water are naturally attracted to each other and form temporary hydrogen bonds with each other; their attraction for each other on the surface of a liquid, gives rise to surface tension. But they are also attracted in a similar way to other molecules, called hydrophilic molecules, such as those in the fibers of a towel; these attractive forces can draw water upward against the force of gravity to a certain degree.
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