🔬 Science Activity

Tornado in a Bottle

🎓 Grade ⏱ 15–20 min ⭐ Easy 👨‍👩‍👧 Adult supervision needed

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📋 How to Do This Activity

Step 1

Fill one plastic bottle about two-thirds full with water.

Step 2

Add a few drops of food colouring or glitter to the water for visual effect.

Step 3

Connect the two bottles at their necks using the bottle connector or duct tape.

Step 4

Flip the assembly so the water-filled bottle is on top.

Step 5

Swirl the bottles in a circular motion — watch a tornado vortex form as water drains.

🧠 What Your Child Will Learn

Vortex Formation

Fluid Motion

Gravity & Drainage

Weather Patterns

⚠️ Safety Notes

• Use plastic bottles only — never glass
• Ensure the connection between bottles is watertight before flipping
• Do this activity over a sink or tray in case of leaks
• The glitter or colouring is harmless but keep away from eyes

📚 School Board Alignment

School Board	Topic Covered	Grade
NCERT/CBSE	Weather and Water, Force	Grade 3–4
Samacheer Kalvi	Weather, Water and Force	Standard 3–4
Cambridge	Earth and Space, Forces	Stage 3–4
Oxford	Weather, Forces	Grade 3–4