2 Pc Hot Science Toys Vortex Demonstration Cyclone Creative Toy Tube Gift Experiment Puzzle Nov V5E2

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Watch your vortex spin in the bottle This is a great educational and fun experiment and activity for school classes, homeschoolers, and any other group. Create a tornado from two liter plastic bottles, water and a colorful plastic connecting tube. Swirling water creates a funnel-shaped vortex as it drains from one bottle to another. You can create different ways to work with it by timing the water draining, using bits of paper or food coloring or lamp oil.

Specifications: Name: ornado vortex toy Material: safety plastic Size:4.9x3.2cm / 1.9x1.3in Weight: about 60g

Package Included: 2pcs ornado vortex toy