Tornadoes are powerful spinning storms. While the real ones are dangerous, you can make a tiny one safely in a bottle. Here’s how!
What You’ll Need
🍶 Two clear plastic bottles (the same size)
💧 Water
🧷 Strong tape
🎨 Optional: glitter, food coloring
🌪️ Optional: a tornado tube connector (sold online or at toy stores)
How to Build It
1. Fill one bottle 2/3 with water.
2. (Optional) Add a few drops of food coloring and a sprinkle of glitter for cool effects.
3. Place the empty bottle upside down on top of the first one — opening to opening.
4. Tape them together very tightly so no water can leak out. (Or use a tornado tube for a perfect seal.)
5. Flip the bottles so the water-filled one is on top.
6. Hold the connection point and swirl the bottle in a circle quickly.
7. Set it down and watch — a tornado forms inside! 🌪️
What’s Happening?
When you swirl the bottle, the water starts spinning in a circle. As it drains down to the empty bottle, the spinning water creates a vortex — a funnel shape in the middle, just like a real tornado!
Without spinning, the water would just glug-glug down slowly (because the air can’t get up easily). But the vortex lets air flow up the middle while water flows down the sides — much faster and prettier!
The Science of Tornadoes
Real tornadoes form when warm air rises fast and starts to spin. They can be 100s of meters wide and spin at over 300 km/h!
The eye in the middle of a tornado has less air pressure, which is why they can suck up dust, water, and even objects.
Try This
🔬 Time how long the water takes to drain WITH a vortex vs WITHOUT spinning. Which is faster?
✨ Try with warm water vs cold water — any difference?
Nature’s amazing — and you just made a model of one of its most powerful storms! 🌪️
