Whirlpools are a rapid circular current in a body of water. If you know Greek mythology, you might recognize the monster Charybdis, which was characterized as a deadly whirlpool. While seeing a whirlpool in nature is a rare occurrence, and making a large whirlpool even more difficult, you can make a simple whirlpool at home. Making a whirlpool can be a fun experiment that teaches you about water and currents. All you need are simple materials.
Things You'll Need
- 2 clear, empty two-liter bottles
- Duct tape
- Food coloring
Fill one empty plastic two-liter bottle with water until it is three-quarters full. Do not completely fill the bottle with water; you need some air to make the whirlpool work.
Add a few drops of food coloring to the water. This is not a critical step, but the coloring makes the water in the bottle easier to see when the whirlpool begins.
Tip the second, empty plastic two-liter bottle over and place its opening on the opening of the two-liter bottle filled with colored water. Use duct tape to attach the two bottles together. Create a good seal with the duct tape by wrapping the ends of the bottle multiple times so that water does not escape.
Tip the bottles over so that the bottle filled with water is on the top. Quickly swirl the bottle in a circular motion to get the water moving in a circle. Watch closely as what looks like a tornado is formed in the water as it swirls downward into the empty bottle. You have essentially created your own whirlpool.
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