STEM Unplugged Video
4 minutes

The Science Behind Bubbling Lava Lamps

  • Chemistry
  • STEM


Curious about what causes those mesmerizing bubbles in lava lamps? In this episode of STEM Unplugged, students will make their own lava lamp using a few common household items while getting a quick lesson on density and chemical reactions. 


  • Oil 
  • Water 
  • Clear container 
  • Alka Seltzer tablets 
  • Plate or tray 
  • Optional: food coloring 



Suggested Time

4 minutes