Water tornado with batteries

Creating a water tornado with batteries is an exciting science experiment that demonstrates the principles of vortex formation. Here's a description:

1. Materials Needed: A clear plastic bottle (with cap), two AA batteries, electrical tape, water, and optional glitter or food coloring for visual effect.

2. Assembly: Fill the bottle about two-thirds full with water. Add glitter or food coloring for a more dramatic effect. Tape the two batteries together end-to-end securely using electrical tape.

3. Procedure: Insert the battery setup into the bottle, ensuring it fits snugly. Seal the cap tightly to prevent leaks.

4. Creating the Tornado: Hold the bottle by the neck and spin it in a circular motion. The spinning creates a vortex, forming a water tornado inside the bottle.

This demonstrates centrifugal force and the movement of liquids under rotational motion, making it both educational and visually fascinating.