🧪 Rain in a Jar
Objective: Make your own mini water cycle in a jar.
🔮 Step 1 — Predict first!
Your prediction
Predict what will appear on the underside of the plate.
🧰 Materials
📋 Instructions
2. Put the plate on top of the jar and place ice cubes on the plate.
3. Wait a few minutes and watch the bottom of the plate.
⚙️ The variables
🔧 What we change
The cold plate above warm water
📏 What we measure
Droplets forming under the plate
⚖️ What stays the same
The jar and the amount of water
📊 Step 2 — Collect your data
Enter your own measurements below — the chart draws itself as you type. If your experiment does not have measurements, record what you saw in the notes box.
| Day / Try | Measurement A | Measurement B | Notes |
|---|---|---|---|
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 |
📈 Your bar chart will appear here.
🔍 Step 3 — Prediction vs observation
💡 The science behind it
Warm water evaporates into invisible water vapour. The vapour rises, meets the cold plate and condenses into tiny droplets. When the drops grow heavy, they fall — just like rain!
🏁 Conclusion
You created evaporation, condensation and precipitation in one jar — the water cycle in miniature.
🚀 Extension challenge
Where else have you seen condensation? On a cold drink? On a bathroom mirror?
🧑🏫 Teacher notes
The warm water should be comfortable to touch, never boiling.