Upthrust
Properties of Matter
Lava Lamp
Enrichment Activity for 5-11 11-14
- Level Elementary
What you need
- A large glass
- Lemonade (or fizzy water)
- Peanuts (or raisins)
Instructions
- Fill the glass with lemonade
- Stir for 1 min or leave to go slightly flat
- Drop some peanuts into the glass
Results and Explanation
The nuts float up to the top and fall back down again, like in a lava lamp. Gas bubbles grow on the peanuts, making them float upwards. When they reach the top the bubbles burst and the peanuts fall back down again.
